Sample viewer

vx.netlux.org/Virus.DOS.Weizen.503

.

GIF

Syscalls:

Time Syscall Op Syscall Name
2018-12-17T22:29:16.936732802Z 26 PC: 12a82 | Set disk transfer address
2018-12-17T22:29:16.938736679Z 71 PC: 12a8c | Get current directory
2018-12-17T22:29:16.942261512Z 53 PC: 12a99 | Get interrupt vector (Interrupt = '36' AKA 'Set random record number')
2018-12-17T22:29:16.943881886Z 37 PC: 12aa9 | Set interrupt vector (Interrupt = '36' AKA 'Set random record number')
2018-12-17T22:29:16.945447297Z 78 PC: 12ab6 | Find first file
2018-12-17T22:29:16.9589594Z 61 PC: 12bd2 | Open file (Filename = 'SLEEP.COM')
2018-12-17T22:29:16.967042153Z 63 PC: 12aca | Read file or device (Read 26 bytes on handle 5)
2018-12-17T22:29:16.974162563Z 62 PC: 12ace | Close file
2018-12-17T22:29:16.976852909Z 67 PC: 12be0 | Get or set file attributes
2018-12-17T22:29:16.99499771Z 61 PC: 12bd2 | Open file (Filename = 'SLEEP.COM')
2018-12-17T22:29:17.002597288Z 64 PC: 12b53 | Write file or device (Write 3 bytes on handle 5)
2018-12-17T22:29:17.006593309Z 66 PC: 12b5f | Move file pointer
2018-12-17T22:29:17.008287787Z 44 PC: 12b63 | Get time 0x12b63: or dx, dx
0x12b65: je 0x12b5f
0x12b67: mov word ptr [bp + 0x104], dx
0x12b6b: xor byte ptr [bp + 0x118], 8
0x12b70: lea di, word ptr [bp + 0x2fa]
0x12b74: mov ax, 0x5355
0x12b77: stosw word ptr es:[di], ax
0x12b78: lea si, word ptr [bp + 0x103]
0x12b7c: mov cx, 0x19
0x12b7f: push si
0x12b80: push cx
0x12b81: rep movsb byte ptr es:[di], byte ptr [si]
0x12b83: lea si, word ptr [bp + 0x2a1]
0x12b87: mov cx, 0xf
0x12b8a: rep movsb byte ptr es:[di], byte ptr [si]
0x12b8c: pop cx
0x12b8d: pop si
0x12b8e: pop dx
0x12b8f: push di
0x12b90: push si
2018-12-17T22:29:17.011765756Z 64 PC: 12c62 | Write file or device (Write 503 bytes on handle 5)
2018-12-17T22:29:17.021442708Z 87 PC: 12bba | Get or set file date and time
2018-12-17T22:29:17.023383522Z 62 PC: 12bbe | Close file
2018-12-17T22:29:17.031778534Z 67 PC: 12be0 | Get or set file attributes
2018-12-17T22:29:17.043732238Z 79 PC: 12ab6 | Find next file
2018-12-17T22:29:17.047274131Z 61 PC: 12bd2 | Open file (Filename = 'PRINT.COM')
2018-12-17T22:29:17.054492076Z 63 PC: 12aca | Read file or device (Read 26 bytes on handle 5)
2018-12-17T22:29:17.061382217Z 62 PC: 12ace | Close file
2018-12-17T22:29:17.064427054Z 79 PC: 12ab6 | Find next file
2018-12-17T22:29:17.067990465Z 61 PC: 12bd2 | Open file (Filename = 'HELLO.COM')
2018-12-17T22:29:17.079050311Z 63 PC: 12aca | Read file or device (Read 26 bytes on handle 5)
2018-12-17T22:29:17.102782673Z 62 PC: 12ace | Close file
2018-12-17T22:29:17.105560157Z 79 PC: 12ab6 | Find next file
2018-12-17T22:29:17.109557258Z 61 PC: 12bd2 | Open file (Filename = 'PHANG.COM')
2018-12-17T22:29:17.120825613Z 63 PC: 12aca | Read file or device (Read 26 bytes on handle 5)
2018-12-17T22:29:17.128440517Z 62 PC: 12ace | Close file
2018-12-17T22:29:17.130683389Z 79 PC: 12ab6 | Find next file
2018-12-17T22:29:17.138010178Z 61 PC: 12bd2 | Open file (Filename = 'PRINTA~1.COM')
2018-12-17T22:29:17.145137977Z 63 PC: 12aca | Read file or device (Read 26 bytes on handle 5)
2018-12-17T22:29:17.152765162Z 62 PC: 12ace | Close file
2018-12-17T22:29:17.156704018Z 79 PC: 12ab6 | Find next file
2018-12-17T22:29:17.15991564Z 61 PC: 12bd2 | Open file (Filename = 'MANDEL.COM')
2018-12-17T22:29:17.169646051Z 63 PC: 12aca | Read file or device (Read 26 bytes on handle 5)
2018-12-17T22:29:17.194113776Z 62 PC: 12ace | Close file
2018-12-17T22:29:17.201238347Z 67 PC: 12be0 | Get or set file attributes
2018-12-17T22:29:17.21590951Z 61 PC: 12bd2 | Open file (Filename = 'MANDEL.COM')
2018-12-17T22:29:17.227514537Z 64 PC: 12b53 | Write file or device (Write 3 bytes on handle 5)
2018-12-17T22:29:17.231310189Z 66 PC: 12b5f | Move file pointer
2018-12-17T22:29:17.233115536Z 44 PC: 12b63 | Get time 0x12b63: or dx, dx
0x12b65: je 0x12b5f
0x12b67: mov word ptr [bp + 0x104], dx
0x12b6b: xor byte ptr [bp + 0x118], 8
0x12b70: lea di, word ptr [bp + 0x2fa]
0x12b74: mov ax, 0x5355
0x12b77: stosw word ptr es:[di], ax
0x12b78: lea si, word ptr [bp + 0x103]
0x12b7c: mov cx, 0x19
0x12b7f: push si
0x12b80: push cx
0x12b81: rep movsb byte ptr es:[di], byte ptr [si]
0x12b83: lea si, word ptr [bp + 0x2a1]
0x12b87: mov cx, 0xf
0x12b8a: rep movsb byte ptr es:[di], byte ptr [si]
0x12b8c: pop cx
0x12b8d: pop si
0x12b8e: pop dx
0x12b8f: push di
0x12b90: push si
2018-12-17T22:29:17.2363577Z 64 PC: 12c62 | Write file or device (Write 503 bytes on handle 5)
2018-12-17T22:29:17.247296786Z 87 PC: 12bba | Get or set file date and time
2018-12-17T22:29:17.249691323Z 62 PC: 12bbe | Close file
2018-12-17T22:29:17.259654138Z 67 PC: 12be0 | Get or set file attributes
2018-12-17T22:29:17.286254185Z 79 PC: 12ab6 | Find next file
2018-12-17T22:29:17.289730305Z 61 PC: 12bd2 | Open file (Filename = 'PAH.COM')
2018-12-17T22:29:17.298071128Z 63 PC: 12aca | Read file or device (Read 26 bytes on handle 5)
2018-12-17T22:29:17.306589948Z 62 PC: 12ace | Close file
2018-12-17T22:29:17.310598026Z 79 PC: 12ab6 | Find next file
2018-12-17T22:29:17.314071701Z 61 PC: 12bd2 | Open file (Filename = 'TEST.COM')
2018-12-17T22:29:17.322106993Z 63 PC: 12aca | Read file or device (Read 26 bytes on handle 5)
2018-12-17T22:29:17.326370589Z 62 PC: 12ace | Close file
2018-12-17T22:29:17.328871838Z 79 PC: 12ab6 | Find next file
2018-12-17T22:29:17.332073394Z 37 PC: 12b13 | Set interrupt vector (Interrupt = '36' AKA 'Set random record number')
2018-12-17T22:29:17.334911796Z 59 PC: 12b1d | Change current directory
2018-12-17T22:29:17.339869683Z 26 PC: 12b24 | Set disk transfer address