Sample viewer

vx.netlux.org/Virus.DOS.DirDropper.1575

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GIF

Syscalls:

Time Syscall Op Syscall Name
2018-12-17T23:10:29.508860844Z 42 PC: 12e68 | Get date 0x12e68: cmp dh, 0xa
0x12e6b: jne 0x12e8b
0x12e6d: xor dx, dx
0x12e6f: mov ah, 0x19
0x12e71: int 0x21
0x12e73: xor bx, bx
0x12e75: mov ds, bx
0x12e77: mov cx, 1
0x12e7a: int 0x26
0x12e7c: jb 0x12e86
0x12e7e: pop di
0x12e7f: inc dx
0x12e80: cmp dx, 0x2cf
0x12e84: jne 0x12e77
0x12e86: ljmp 0xf000:0xfff0
0x12e8b: mov ax, cs
0x12e8d: add ax, 0x1000
0x12e90: mov es, ax
0x12e92: mov si, 0x100
0x12e95: xor di, di
2018-12-17T23:10:29.512570204Z 26 PC: 12ea4 | Set disk transfer address
2018-12-17T23:10:29.515008186Z 78 PC: 12ffd | Find first file
2018-12-17T23:10:29.519467668Z 78 PC: 12f2d | Find first file
2018-12-17T23:10:29.524411105Z 26 PC: 12fa1 | Set disk transfer address
2018-12-17T23:10:29.527304929Z 76 PC: 12dc4 | Terminate with return code (Return code = '0')

{"DateBased":true,"Day":1,"Month":1,"Year":1980,"Hour":0,"Min":0,"Second":0,"TimeBased":false,"OriginalID":16871,"SideJobID":0}

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GIF

Syscalls:

Time Syscall Op Syscall Name
2018-12-25T12:54:08.226113771Z 42 PC: 12e68 | Get date 0x12e68: cmp dh, 0xa
0x12e6b: jne 0x12e8b
0x12e6d: xor dx, dx
0x12e6f: mov ah, 0x19
0x12e71: int 0x21
0x12e73: xor bx, bx
0x12e75: mov ds, bx
0x12e77: mov cx, 1
0x12e7a: int 0x26
0x12e7c: jb 0x12e86
0x12e7e: pop di
0x12e7f: inc dx
0x12e80: cmp dx, 0x2cf
0x12e84: jne 0x12e77
0x12e86: ljmp 0xf000:0xfff0
0x12e8b: mov ax, cs
0x12e8d: add ax, 0x1000
0x12e90: mov es, ax
0x12e92: mov si, 0x100
0x12e95: xor di, di
2018-12-25T12:54:08.229361237Z 26 PC: 12ea4 | Set disk transfer address
2018-12-25T12:54:08.231896587Z 78 PC: 12ffd | Find first file
2018-12-25T12:54:08.237181377Z 78 PC: 12f2d | Find first file
2018-12-25T12:54:08.242769318Z 26 PC: 12fa1 | Set disk transfer address
2018-12-25T12:54:08.246256998Z 76 PC: 12dc4 | Terminate with return code (Return code = '0')

{"DateBased":true,"Day":1,"Month":10,"Year":1980,"Hour":0,"Min":0,"Second":0,"TimeBased":false,"OriginalID":16871,"SideJobID":0}

.

GIF

Syscalls:

Time Syscall Op Syscall Name
2018-12-25T12:54:08.518553237Z 42 PC: 12e68 | Get date 0x12e68: cmp dh, 0xa
0x12e6b: jne 0x12e8b
0x12e6d: xor dx, dx
0x12e6f: mov ah, 0x19
0x12e71: int 0x21
0x12e73: xor bx, bx
0x12e75: mov ds, bx
0x12e77: mov cx, 1
0x12e7a: int 0x26
0x12e7c: jb 0x12e86
0x12e7e: pop di
0x12e7f: inc dx
0x12e80: cmp dx, 0x2cf
0x12e84: jne 0x12e77
0x12e86: ljmp 0xf000:0xfff0
0x12e8b: mov ax, cs
0x12e8d: add ax, 0x1000
0x12e90: mov es, ax
0x12e92: mov si, 0x100
0x12e95: xor di, di
2018-12-25T12:54:08.52706663Z 25 PC: 12e73 | Get default drive
2018-12-25T12:54:10.80755861Z 72 PC: 8f1b9 | Allocate memory
2018-12-25T12:54:10.809199645Z 72 PC: 8f1bd | Allocate memory
2018-12-25T12:54:10.812534989Z 99 PC: 90858 | Get DBCS lead byte table pointer
2018-12-25T12:54:10.815283373Z 61 PC: 91f88 | Open file (Filename = 'C:\WINDOWS\HIMEM.SYS')
2018-12-25T12:54:10.825722898Z 66 PC: 91f95 | Move file pointer
2018-12-25T12:54:10.828037587Z 62 PC: 91fc1 | Close file
2018-12-25T12:54:10.829977982Z 75 PC: 91fe0 | Execute program
2018-12-25T12:54:10.84544038Z 98 PC: 916f1 | Get current PSP
2018-12-25T12:54:10.846955836Z 9 PC: c605 | Display string (String= '6��r�&;] u')
2018-12-25T12:54:10.850917238Z 48 PC: c609 | Get DOS version
2018-12-25T12:54:10.853905152Z 9 PC: c382 | Display string (String= ' Installed A20 handler number ')
2018-12-25T12:54:10.856527407Z 2 PC: c38c | Character output (Char = '32')
2018-12-25T12:54:10.859323333Z 2 PC: c3a7 | Character output (Char = '2e')
2018-12-25T12:54:10.862679629Z 9 PC: c6d9 | Display string (String= '�����VH�VD���V@��������������_���Ku��t1��������D�����t �� ��������a1��Z�����W���� ������5���|�����(���������Nj�(��������p�^')
2018-12-25T12:54:10.866374744Z 9 PC: c6e0 | Display string (String= '�5���|�����(���������Nj�(��������p�^')
2018-12-25T12:54:10.872429091Z 61 PC: 91f88 | Open file (See above)
2018-12-25T12:54:10.882628019Z 66 PC: 91f95 | Move file pointer (See above)
2018-12-25T12:54:10.884080194Z 62 PC: 91fc1 | Close file (See above)
2018-12-25T12:54:10.890088983Z 75 PC: 91fe0 | Execute program (See above)
2018-12-25T12:54:10.909466419Z 98 PC: 916f1 | Get current PSP (See above)
2018-12-25T12:54:10.913242955Z 82 PC: 13d46 | Get DOS internal pointers (SYSVARS)
2018-12-25T12:54:10.915403091Z 53 PC: 13ac3 | Get interrupt vector (Interrupt = '19' AKA 'Delete file')
2018-12-25T12:54:10.916647813Z 37 PC: 13ad6 | Set interrupt vector (Interrupt = '19' AKA 'Delete file')
2018-12-25T12:54:10.917742567Z 53 PC: 13ae0 | Get interrupt vector (Interrupt = '47' AKA 'Get disk transfer address')
2018-12-25T12:54:10.919268747Z 37 PC: 13af3 | Set interrupt vector (Interrupt = '47' AKA 'Get disk transfer address')
2018-12-25T12:54:10.920703713Z 9 PC: 13a0d | Display string (Could not find end pointer)
2018-12-25T12:54:10.928536674Z 62 PC: 8f8eb | Close file
2018-12-25T12:54:10.931798595Z 62 PC: 8f8f2 | Close file
2018-12-25T12:54:10.933813948Z 62 PC: 8f8f2 | Close file (See above)
2018-12-25T12:54:10.935318279Z 62 PC: 8f8f2 | Close file (See above)
2018-12-25T12:54:10.936967795Z 62 PC: 8f8f2 | Close file (See above)
2018-12-25T12:54:10.938424997Z 62 PC: 8f8f2 | Close file (See above)
2018-12-25T12:54:10.93979332Z 62 PC: 8f8f2 | Close file (See above)
2018-12-25T12:54:10.941301353Z 62 PC: 8f8f2 | Close file (See above)
2018-12-25T12:54:10.943694497Z 62 PC: 8f8f2 | Close file (See above)
2018-12-25T12:54:10.944978924Z 62 PC: 8f8f2 | Close file (See above)
2018-12-25T12:54:10.946436728Z 62 PC: 8f8f2 | Close file (See above)
2018-12-25T12:54:10.947946042Z 62 PC: 8f8f2 | Close file (See above)
2018-12-25T12:54:10.94922859Z 62 PC: 8f8f2 | Close file (See above)
2018-12-25T12:54:10.950710343Z 62 PC: 8f8f2 | Close file (See above)
2018-12-25T12:54:10.952709524Z 62 PC: 8f8f2 | Close file (See above)
2018-12-25T12:54:10.95432798Z 62 PC: 8f8f2 | Close file (See above)
2018-12-25T12:54:10.955978396Z 62 PC: 8f8f2 | Close file (See above)
2018-12-25T12:54:10.957620484Z 62 PC: 8f8f2 | Close file (See above)
2018-12-25T12:54:10.959003837Z 62 PC: 8f8f2 | Close file (See above)
2018-12-25T12:54:10.960640716Z 62 PC: 8f8f2 | Close file (See above)
2018-12-25T12:54:10.962559102Z 62 PC: 8f8f2 | Close file (See above)
2018-12-25T12:54:10.963839738Z 62 PC: 8f8f2 | Close file (See above)
2018-12-25T12:54:10.965181696Z 62 PC: 8f8f2 | Close file (See above)
2018-12-25T12:54:10.96671323Z 62 PC: 8f8f2 | Close file (See above)
2018-12-25T12:54:10.968275214Z 62 PC: 8f8f2 | Close file (See above)
2018-12-25T12:54:10.97007353Z 62 PC: 8f8f2 | Close file (See above)
2018-12-25T12:54:10.971989845Z 62 PC: 8f8f2 | Close file (See above)
2018-12-25T12:54:10.97349025Z 62 PC: 8f8f2 | Close file (See above)
2018-12-25T12:54:10.97513257Z 62 PC: 8f8f2 | Close file (See above)
2018-12-25T12:54:10.976928019Z 62 PC: 8f8f2 | Close file (See above)
2018-12-25T12:54:10.978528283Z 62 PC: 8f8f2 | Close file (See above)
2018-12-25T12:54:10.980154843Z 61 PC: 8f8ff | Open file (Filename = '')
2018-12-25T12:54:10.985209745Z 62 PC: 8f90e | Close file
2018-12-25T12:54:10.986922992Z 69 PC: 8f915 | Duplicate handle
2018-12-25T12:54:10.988664836Z 69 PC: 8f919 | Duplicate handle
2018-12-25T12:54:10.990679892Z 61 PC: 9387b | Open file (Filename = '')
2018-12-25T12:54:10.995070028Z 68 PC: 9386b | I/O control for devices (Set for = '')
2018-12-25T12:54:10.996236478Z 61 PC: 9387b | Open file (See above)
2018-12-25T12:54:11.001179183Z 68 PC: 9386b | I/O control for devices (See above)
2018-12-25T12:54:11.002617836Z 74 PC: 8f9c4 | Reallocate memory
2018-12-25T12:54:11.003694416Z 72 PC: 8f9e0 | Allocate memory
2018-12-25T12:54:11.00608285Z 72 PC: 8f9e4 | Allocate memory
2018-12-25T12:54:11.007854629Z 74 PC: 8f9fb | Reallocate memory
2018-12-25T12:54:11.009477217Z 72 PC: 8fa02 | Allocate memory
2018-12-25T12:54:11.012607407Z 72 PC: 8fa06 | Allocate memory
2018-12-25T12:54:11.014580003Z 73 PC: 8fa11 | Release memory
2018-12-25T12:54:11.016474851Z 73 PC: 8efea | Release memory
2018-12-25T12:54:11.018583965Z 74 PC: 8f003 | Reallocate memory
2018-12-25T12:54:11.020148841Z 72 PC: 8f054 | Allocate memory
2018-12-25T12:54:11.021807897Z 72 PC: 8f058 | Allocate memory
2018-12-25T12:54:11.023961045Z 73 PC: 8f060 | Release memory
2018-12-25T12:54:11.02514724Z 61 PC: 8f080 | Open file (Filename = '')
2018-12-25T12:54:11.034865687Z 63 PC: 8f095 | Read file or device (Read 4 bytes on handle 5)
2018-12-25T12:54:11.041451558Z 66 PC: 8f0ad | Move file pointer
2018-12-25T12:54:11.042896041Z 62 PC: 8f0d1 | Close file
2018-12-25T12:54:11.044693746Z 75 PC: 8f0f2 | Execute program
2018-12-25T12:54:11.066373142Z 80 PC: 12be9 | Set current PSP
2018-12-25T12:54:11.067472171Z 48 PC: 12bee | Get DOS version
2018-12-25T12:54:11.069159248Z 99 PC: 193d0 | Get DBCS lead byte table pointer
2018-12-25T12:54:11.072670985Z 101 PC: 12c74 | Get extended country info
2018-12-25T12:54:11.073757939Z 99 PC: 12c7a | Get DBCS lead byte table pointer
2018-12-25T12:54:11.074817052Z 74 PC: 12cdc | Reallocate memory
2018-12-25T12:54:11.077354716Z 72 PC: 1355d | Allocate memory
2018-12-25T12:54:11.078923295Z 25 PC: 13596 | Get default drive
2018-12-25T12:54:11.08026551Z 71 PC: 135ad | Get current directory
2018-12-25T12:54:11.083032361Z 59 PC: 135ba | Change current directory
2018-12-25T12:54:11.087846877Z 59 PC: 135c8 | Change current directory
2018-12-25T12:54:11.09307378Z 59 PC: 135d3 | Change current directory
2018-12-25T12:54:11.097482585Z 25 PC: 12d13 | Get default drive
2018-12-25T12:54:11.098496803Z 37 PC: 127d3 | Set interrupt vector (Interrupt = '34' AKA 'Random write')
2018-12-25T12:54:11.09943205Z 37 PC: 127da | Set interrupt vector (Interrupt = '35' AKA 'Get file size in records')
2018-12-25T12:54:11.100818896Z 37 PC: 127e1 | Set interrupt vector (Interrupt = '36' AKA 'Set random record number')
2018-12-25T12:54:11.10277972Z 80 PC: 1301d | Set current PSP
2018-12-25T12:54:11.103468182Z 37 PC: 13041 | Set interrupt vector (Interrupt = '46' AKA 'Set verify flag')
2018-12-25T12:54:11.105029629Z 53 PC: 13362 | Get interrupt vector (Interrupt = '47' AKA 'Get disk transfer address')
2018-12-25T12:54:11.106343176Z 37 PC: 13383 | Set interrupt vector (Interrupt = '47' AKA 'Get disk transfer address')
2018-12-25T12:54:11.107615842Z 51 PC: 13417 | Get or set Ctrl-Break
2018-12-25T12:54:11.109760882Z 72 PC: 130ec | Allocate memory
2018-12-25T12:54:11.111325579Z 61 PC: 131b2 | Open file (Filename = '')
2018-12-25T12:54:11.116856605Z 62 PC: 131ba | Close file
2018-12-25T12:54:11.11906272Z 51 PC: 1344c | Get or set Ctrl-Break
2018-12-25T12:54:11.119974113Z 74 PC: 1197c | Reallocate memory
2018-12-25T12:54:11.121175478Z 72 PC: 11991 | Allocate memory
2018-12-25T12:54:11.123206964Z 73 PC: 119b2 | Release memory
2018-12-25T12:54:11.124305393Z 72 PC: 119bd | Allocate memory
2018-12-25T12:54:11.126001879Z 73 PC: 119df | Release memory
2018-12-25T12:54:11.128082813Z 72 PC: 119f5 | Allocate memory
2018-12-25T12:54:11.129681675Z 72 PC: 119fd | Allocate memory