Sample viewer

vx.netlux.org/Virus.DOS.VCL.538.b

.

GIF

Syscalls:

Time Syscall Op Syscall Name
2018-12-17T22:44:19.381818801Z 71 PC: 12acd | Get current directory
2018-12-17T22:44:19.386479054Z 59 PC: 12ad4 | Change current directory
2018-12-17T22:44:19.39202365Z 47 PC: 12ae9 | Get disk transfer address
2018-12-17T22:44:19.393586386Z 26 PC: 12af7 | Set disk transfer address
2018-12-17T22:44:19.395103384Z 78 PC: 12b01 | Find first file
2018-12-17T22:44:19.401069358Z 47 PC: 12b4b | Get disk transfer address
2018-12-17T22:44:19.402963905Z 26 PC: 12b5a | Set disk transfer address
2018-12-17T22:44:19.404753437Z 78 PC: 12b62 | Find first file
2018-12-17T22:44:19.41218489Z 26 PC: 12b74 | Set disk transfer address
2018-12-17T22:44:19.413506434Z 26 PC: 12b37 | Set disk transfer address
2018-12-17T22:44:19.414775694Z 59 PC: 12ade | Change current directory
2018-12-17T22:44:19.417216154Z 71 PC: 12acd | Get current directory
2018-12-17T22:44:19.420434302Z 59 PC: 12ad4 | Change current directory
2018-12-17T22:44:19.425294363Z 47 PC: 12ae9 | Get disk transfer address
2018-12-17T22:44:19.427035626Z 26 PC: 12af7 | Set disk transfer address
2018-12-17T22:44:19.428301377Z 78 PC: 12b01 | Find first file
2018-12-17T22:44:19.433087958Z 47 PC: 12b4b | Get disk transfer address
2018-12-17T22:44:19.43436911Z 26 PC: 12b5a | Set disk transfer address
2018-12-17T22:44:19.436182992Z 78 PC: 12b62 | Find first file
2018-12-17T22:44:19.443992604Z 26 PC: 12b74 | Set disk transfer address
2018-12-17T22:44:19.4459062Z 26 PC: 12b37 | Set disk transfer address
2018-12-17T22:44:19.448569813Z 59 PC: 12ade | Change current directory
2018-12-17T22:44:19.451922998Z 44 PC: 12c05 | Get time 0x12c05: mov al, ch
0x12c07: cwde
0x12c08: ret
0x12c09: mov ah, 0x2c
0x12c0b: int 0x21
0x12c0d: mov al, cl
0x12c0f: cwde
0x12c10: ret
0x12c11: mov ah, 0x2c
0x12c13: int 0x21
0x12c15: mov al, dh
0x12c17: cwde
0x12c18: ret
0x12c19: mov ah, 0x2a
0x12c1b: int 0x21
0x12c1d: cwde
0x12c1e: ret
0x12c1f: inc dx
0x12c20: popaw
0x12c21: and byte ptr fs:[bp + di + 0x6f], ah
2018-12-17T22:44:19.455710151Z 42 PC: 12c1d | Get date 0x12c1d: cwde
0x12c1e: ret
0x12c1f: inc dx
0x12c20: popaw
0x12c21: and byte ptr fs:[bp + di + 0x6f], ah
0x12c25: insw word ptr es:[di], dx
0x12c26: insw word ptr es:[di], dx
0x12c27: popaw
0x12c28: outsb dx, byte ptr [si]
0x12c29: and byte ptr fs:[bx + 0x72], ch
0x12c2d: and byte ptr [bp + 0x69], ah
0x12c30: insb byte ptr es:[di], dx
0x12c31: and byte ptr gs:[bp + 0x61], ch
0x12c35: insw word ptr es:[di], dx
0x12c36: or ax, 0xa
0x12c3a: das
0x12c3b: mov di, 0xa41
0x12c3e: mov word ptr [0x589], di
0x12c42: call 0x13648
0x12c45: mov ax, 0x5500
2018-12-17T22:44:21.597785722Z 72 PC: 8f1b9 | Allocate memory
2018-12-17T22:44:21.600205991Z 72 PC: 8f1bd | Allocate memory
2018-12-17T22:44:21.603190878Z 99 PC: 90858 | Get DBCS lead byte table pointer
2018-12-17T22:44:21.607710769Z 61 PC: 91f88 | Open file (Filename = 'C:\WINDOWS\HIMEM.SYS')
2018-12-17T22:44:21.62668059Z 66 PC: 91f95 | Move file pointer
2018-12-17T22:44:21.62885163Z 62 PC: 91fc1 | Close file
2018-12-17T22:44:21.632700925Z 75 PC: 91fe0 | Execute program
2018-12-17T22:44:21.665212623Z 98 PC: 916f1 | Get current PSP
2018-12-17T22:44:21.667343396Z 9 PC: c605 | Display string (String= '6��r�&;] u')
2018-12-17T22:44:21.681014128Z 48 PC: c609 | Get DOS version
2018-12-17T22:44:21.684693815Z 9 PC: c382 | Display string (String= ' Installed A20 handler number ')
2018-12-17T22:44:21.687466183Z 2 PC: c38c | Character output (Char = '32')
2018-12-17T22:44:21.690485567Z 2 PC: c3a7 | Character output (Char = '2e')
2018-12-17T22:44:21.694419231Z 9 PC: c6d9 | Display string (String= '�����VH�VD���V@��������������_���Ku��t1��������D�����t �� ��������a1��Z�����W���� ������5���|�����(���������Nj�(��������p�^')
2018-12-17T22:44:21.698650082Z 9 PC: c6e0 | Display string (String= '�5���|�����(���������Nj�(��������p�^')
2018-12-17T22:44:21.704030117Z 61 PC: 91f88 | Open file (Filename = 'C:\WINDOWS\SMARTDRV.EXE')
2018-12-17T22:44:21.716297873Z 66 PC: 91f95 | Move file pointer
2018-12-17T22:44:21.717945896Z 62 PC: 91fc1 | Close file
2018-12-17T22:44:21.720252396Z 75 PC: 91fe0 | Execute program
2018-12-17T22:44:21.744646763Z 98 PC: 916f1 | Get current PSP
2018-12-17T22:44:21.749389771Z 82 PC: 13d46 | Get DOS internal pointers (SYSVARS)
2018-12-17T22:44:21.751467123Z 53 PC: 13ac3 | Get interrupt vector (Interrupt = '19' AKA 'Delete file')
2018-12-17T22:44:21.753713432Z 37 PC: 13ad6 | Set interrupt vector (Interrupt = '19' AKA 'Delete file')
2018-12-17T22:44:21.755513879Z 53 PC: 13ae0 | Get interrupt vector (Interrupt = '47' AKA 'Get disk transfer address')
2018-12-17T22:44:21.757384776Z 37 PC: 13af3 | Set interrupt vector (Interrupt = '47' AKA 'Get disk transfer address')
2018-12-17T22:44:21.759436067Z 9 PC: 13a0d | Display string (Could not find end pointer)
2018-12-17T22:44:21.768552904Z 62 PC: 8f8eb | Close file
2018-12-17T22:44:21.771061574Z 62 PC: 8f8f2 | Close file
2018-12-17T22:44:21.774517268Z 62 PC: 8f8f2 | Close file
2018-12-17T22:44:21.77859152Z 62 PC: 8f8f2 | Close file
2018-12-17T22:44:21.78066937Z 62 PC: 8f8f2 | Close file
2018-12-17T22:44:21.783495019Z 62 PC: 8f8f2 | Close file
2018-12-17T22:44:21.78565321Z 62 PC: 8f8f2 | Close file
2018-12-17T22:44:21.787695315Z 62 PC: 8f8f2 | Close file
2018-12-17T22:44:21.789940288Z 62 PC: 8f8f2 | Close file
2018-12-17T22:44:21.792668023Z 62 PC: 8f8f2 | Close file
2018-12-17T22:44:21.795526641Z 62 PC: 8f8f2 | Close file
2018-12-17T22:44:21.797555497Z 62 PC: 8f8f2 | Close file
2018-12-17T22:44:21.800490967Z 62 PC: 8f8f2 | Close file
2018-12-17T22:44:21.802543428Z 62 PC: 8f8f2 | Close file
2018-12-17T22:44:21.804569578Z 62 PC: 8f8f2 | Close file
2018-12-17T22:44:21.807370498Z 62 PC: 8f8f2 | Close file
2018-12-17T22:44:21.809379704Z 62 PC: 8f8f2 | Close file
2018-12-17T22:44:21.811414291Z 62 PC: 8f8f2 | Close file
2018-12-17T22:44:21.814117428Z 62 PC: 8f8f2 | Close file
2018-12-17T22:44:21.81600806Z 62 PC: 8f8f2 | Close file
2018-12-17T22:44:21.818023149Z 62 PC: 8f8f2 | Close file
2018-12-17T22:44:21.820844526Z 62 PC: 8f8f2 | Close file
2018-12-17T22:44:21.82299988Z 62 PC: 8f8f2 | Close file
2018-12-17T22:44:21.825075932Z 62 PC: 8f8f2 | Close file
2018-12-17T22:44:21.827853822Z 62 PC: 8f8f2 | Close file
2018-12-17T22:44:21.830007291Z 62 PC: 8f8f2 | Close file
2018-12-17T22:44:21.832009566Z 62 PC: 8f8f2 | Close file
2018-12-17T22:44:21.834048968Z 62 PC: 8f8f2 | Close file
2018-12-17T22:44:21.83655675Z 62 PC: 8f8f2 | Close file
2018-12-17T22:44:21.838562455Z 62 PC: 8f8f2 | Close file
2018-12-17T22:44:21.840567809Z 62 PC: 8f8f2 | Close file
2018-12-17T22:44:21.843434044Z 61 PC: 8f8ff | Open file (Filename = '')
2018-12-17T22:44:21.849180064Z 62 PC: 8f90e | Close file
2018-12-17T22:44:21.851528225Z 69 PC: 8f915 | Duplicate handle
2018-12-17T22:44:21.854571948Z 69 PC: 8f919 | Duplicate handle
2018-12-17T22:44:21.860799539Z 61 PC: 9387b | Open file (Filename = '')
2018-12-17T22:44:21.86605963Z 68 PC: 9386b | I/O control for devices (Set for = '')
2018-12-17T22:44:21.868568417Z 61 PC: 9387b | Open file (Filename = '')
2018-12-17T22:44:21.874028729Z 68 PC: 9386b | I/O control for devices (Set for = '')
2018-12-17T22:44:21.876276661Z 74 PC: 8f9c4 | Reallocate memory
2018-12-17T22:44:21.878795411Z 72 PC: 8f9e0 | Allocate memory
2018-12-17T22:44:21.881698072Z 72 PC: 8f9e4 | Allocate memory
2018-12-17T22:44:21.883687412Z 74 PC: 8f9fb | Reallocate memory
2018-12-17T22:44:21.885800884Z 72 PC: 8fa02 | Allocate memory
2018-12-17T22:44:21.88802835Z 72 PC: 8fa06 | Allocate memory
2018-12-17T22:44:21.890059718Z 73 PC: 8fa11 | Release memory
2018-12-17T22:44:21.892088871Z 73 PC: 8efea | Release memory
2018-12-17T22:44:21.894352525Z 74 PC: 8f003 | Reallocate memory
2018-12-17T22:44:21.896436384Z 72 PC: 8f054 | Allocate memory
2018-12-17T22:44:21.898679967Z 72 PC: 8f058 | Allocate memory
2018-12-17T22:44:21.900958586Z 73 PC: 8f060 | Release memory
2018-12-17T22:44:21.902648332Z 61 PC: 8f080 | Open file (Filename = '')
2018-12-17T22:44:21.912933626Z 63 PC: 8f095 | Read file or device (Read 4 bytes on handle 5)
2018-12-17T22:44:21.919815495Z 66 PC: 8f0ad | Move file pointer
2018-12-17T22:44:21.92175672Z 62 PC: 8f0d1 | Close file
2018-12-17T22:44:21.924212051Z 75 PC: 8f0f2 | Execute program
2018-12-17T22:44:21.949255651Z 80 PC: 12be9 | Set current PSP
2018-12-17T22:44:21.950312475Z 48 PC: 12bee | Get DOS version
2018-12-17T22:44:21.952060582Z 99 PC: 193d0 | Get DBCS lead byte table pointer
2018-12-17T22:44:21.955575435Z 101 PC: 12c74 | Get extended country info
2018-12-17T22:44:21.957078674Z 99 PC: 12c7a | Get DBCS lead byte table pointer
2018-12-17T22:44:21.958522828Z 74 PC: 12cdc | Reallocate memory
2018-12-17T22:44:21.960946806Z 72 PC: 1355d | Allocate memory
2018-12-17T22:44:21.964337947Z 25 PC: 13596 | Get default drive
2018-12-17T22:44:21.965617626Z 71 PC: 135ad | Get current directory
2018-12-17T22:44:21.968519431Z 59 PC: 135ba | Change current directory
2018-12-17T22:44:21.97545841Z 59 PC: 135c8 | Change current directory
2018-12-17T22:44:21.982483669Z 59 PC: 135d3 | Change current directory
2018-12-17T22:44:21.987095212Z 25 PC: 12d13 | Get default drive
2018-12-17T22:44:21.989935955Z 37 PC: 127d3 | Set interrupt vector (Interrupt = '34' AKA 'Random write')
2018-12-17T22:44:21.991751124Z 37 PC: 127da | Set interrupt vector (Interrupt = '35' AKA 'Get file size in records')
2018-12-17T22:44:21.993572414Z 37 PC: 127e1 | Set interrupt vector (Interrupt = '36' AKA 'Set random record number')
2018-12-17T22:44:21.997188701Z 80 PC: 1301d | Set current PSP
2018-12-17T22:44:21.998739677Z 37 PC: 13041 | Set interrupt vector (Interrupt = '46' AKA 'Set verify flag')
2018-12-17T22:44:22.000753738Z 53 PC: 13362 | Get interrupt vector (Interrupt = '47' AKA 'Get disk transfer address')
2018-12-17T22:44:22.003055732Z 37 PC: 13383 | Set interrupt vector (Interrupt = '47' AKA 'Get disk transfer address')
2018-12-17T22:44:22.004788638Z 51 PC: 13417 | Get or set Ctrl-Break
2018-12-17T22:44:22.007611658Z 72 PC: 130ec | Allocate memory
2018-12-17T22:44:22.010866066Z 61 PC: 131b2 | Open file (Filename = '')
2018-12-17T22:44:22.017901898Z 62 PC: 131ba | Close file
2018-12-17T22:44:22.020713568Z 51 PC: 1344c | Get or set Ctrl-Break
2018-12-17T22:44:22.023155712Z 74 PC: 1197c | Reallocate memory
2018-12-17T22:44:22.025177393Z 72 PC: 11991 | Allocate memory
2018-12-17T22:44:22.027380036Z 73 PC: 119b2 | Release memory
2018-12-17T22:44:22.030009815Z 72 PC: 119bd | Allocate memory
2018-12-17T22:44:22.033147462Z 73 PC: 119df | Release memory
2018-12-17T22:44:22.035027281Z 72 PC: 119f5 | Allocate memory
2018-12-17T22:44:22.037969013Z 72 PC: 119fd | Allocate memory