Sample viewer

vx.netlux.org/Virus.DOS.Ash.376.b

.

GIF

Syscalls:

Time Syscall Op Syscall Name
2018-12-17T22:33:52.351455198Z 26 PC: 12a7f | Set disk transfer address
2018-12-17T22:33:52.352920771Z 78 PC: 12a8a | Find first file
2018-12-17T22:33:52.360750909Z 67 PC: 12ab5 | Get or set file attributes
2018-12-17T22:33:52.380523171Z 61 PC: 12ad4 | Open file (Filename = 'SLEEP.COM')
2018-12-17T22:33:52.388412092Z 66 PC: 12ae2 | Move file pointer
2018-12-17T22:33:52.391082138Z 63 PC: 12aee | Read file or device (Read 4 bytes on handle 5)
2018-12-17T22:33:52.398322919Z 66 PC: 12b0f | Move file pointer
2018-12-17T22:33:52.399905231Z 64 PC: 12b1a | Write file or device (Write 4 bytes on handle 5)
2018-12-17T22:33:52.403609977Z 66 PC: 12b24 | Move file pointer
2018-12-17T22:33:52.40538269Z 44 PC: 12b28 | Get time 0x12b28: test dl, dl
0x12b2a: je 0x12b24
0x12b2c: test dh, dh
0x12b2e: jne 0x12b32
0x12b30: mov dh, 0x42
0x12b32: mov word ptr [bp + 0x264], dx
0x12b36: call 0x12ba6
0x12b39: mov ax, 0x4301
0x12b3c: mov cx, word ptr [bp + 0x253]
0x12b40: int 0x21
0x12b42: mov ax, 0x5701
0x12b45: mov cx, word ptr [bp + 0x254]
0x12b49: mov dx, word ptr [bp + 0x256]
0x12b4d: int 0x21
0x12b4f: mov ah, 0x3e
0x12b51: int 0x21
0x12b53: mov ah, 0x1a
0x12b55: mov dx, 0x80
0x12b58: int 0x21
0x12b5a: mov ax, 0x100
2018-12-17T22:33:52.408101995Z 64 PC: 12bb4 | Write file or device (Write 4405 bytes on handle 5)
2018-12-17T22:33:52.433998867Z 67 PC: 12b42 | Get or set file attributes
2018-12-17T22:33:52.440225356Z 87 PC: 12b4f | Get or set file date and time
2018-12-17T22:33:52.443193216Z 62 PC: 12b53 | Close file
2018-12-17T22:33:52.452472637Z 26 PC: 12b5a | Set disk transfer address