Sample viewer

vx.netlux.org/Virus.DOS.Cryptor.based

.

GIF

Syscalls:

Time Syscall Op Syscall Name
2018-12-17T23:07:35.891533333Z 53 PC: 15156 | Get interrupt vector (Interrupt = '233' AKA 'UNKNOWN!')
2018-12-17T23:07:35.893797339Z 81 PC: 1515b | Get current PSP
2018-12-17T23:07:35.898831251Z 84 PC: 15182 | Get verify flag
2018-12-17T23:07:35.900565822Z 98 PC: 151b1 | Get current PSP
2018-12-17T23:07:35.902833915Z 47 PC: 151be | Get disk transfer address
2018-12-17T23:07:35.904451596Z 47 PC: 151ec | Get disk transfer address
2018-12-17T23:07:35.905749936Z 77 PC: 15215 | Get program return code
2018-12-17T23:07:35.907836278Z 44 PC: 1521d | Get time 0x1521d: lodsw ax, word ptr es:[si]
0x1521f: call 0x1523c
0x15222: cdq
0x15223: call 0x2515f
0x15226: dec dl
0x15228: inc di
0x15229: call 0x251c2
0x1522c: cmp al, 0x72
0x1522e: neg dh
0x15230: sub ax, 0xf7ed
0x15234: call 0x251f1
0x15237: cmp ax, 0x102b
0x1523b: ret
0x1523c: sub sp, -2
0x1523f: call 0x251c2
0x15242: dec dx
0x15243: call 0x1524f
0x15247: lodsw ax, word ptr [si]
0x15248: call 0x2515f
0x1524b: lodsb al, byte ptr [si]
2018-12-17T23:07:35.960341536Z 47 PC: 15338 | Get disk transfer address
2018-12-17T23:07:35.961918271Z 26 PC: 1534a | Set disk transfer address
2018-12-17T23:07:35.963389446Z 78 PC: 15355 | Find first file
2018-12-17T23:07:35.971303262Z 61 PC: 15360 | Open file (Filename = 'SLEEP.COM')
2018-12-17T23:07:35.97848402Z 63 PC: 1536d | Read file or device (Read 4 bytes on handle 5)
2018-12-17T23:07:35.985929266Z 66 PC: 1537d | Move file pointer
2018-12-17T23:07:35.988877638Z 62 PC: 153be | Close file
2018-12-17T23:07:35.991079376Z 79 PC: 153c2 | Find next file
2018-12-17T23:07:35.994133427Z 61 PC: 15360 | Open file (Filename = 'PRINT.COM')
2018-12-17T23:07:36.001889677Z 63 PC: 1536d | Read file or device (Read 4 bytes on handle 5)
2018-12-17T23:07:36.009341836Z 66 PC: 1537d | Move file pointer
2018-12-17T23:07:36.010984353Z 62 PC: 153be | Close file
2018-12-17T23:07:36.014153921Z 79 PC: 153c2 | Find next file
2018-12-17T23:07:36.017383732Z 61 PC: 15360 | Open file (Filename = 'HELLO.COM')
2018-12-17T23:07:36.024859415Z 63 PC: 1536d | Read file or device (Read 4 bytes on handle 5)
2018-12-17T23:07:36.032704201Z 66 PC: 1537d | Move file pointer
2018-12-17T23:07:36.034600085Z 62 PC: 153be | Close file
2018-12-17T23:07:36.036876985Z 79 PC: 153c2 | Find next file
2018-12-17T23:07:36.039175095Z 61 PC: 15360 | Open file (Filename = 'PHANG.COM')
2018-12-17T23:07:36.044809286Z 63 PC: 1536d | Read file or device (Read 4 bytes on handle 5)
2018-12-17T23:07:36.050018227Z 66 PC: 1537d | Move file pointer
2018-12-17T23:07:36.051396608Z 62 PC: 153be | Close file
2018-12-17T23:07:36.053975736Z 79 PC: 153c2 | Find next file
2018-12-17T23:07:36.056260742Z 61 PC: 15360 | Open file (Filename = 'PRINTA~1.COM')
2018-12-17T23:07:36.061348606Z 63 PC: 1536d | Read file or device (Read 4 bytes on handle 5)
2018-12-17T23:07:36.06716497Z 66 PC: 1537d | Move file pointer
2018-12-17T23:07:36.068606589Z 62 PC: 153be | Close file
2018-12-17T23:07:36.070243797Z 79 PC: 153c2 | Find next file
2018-12-17T23:07:36.073131846Z 61 PC: 15360 | Open file (Filename = 'MANDEL.COM')
2018-12-17T23:07:36.078414886Z 63 PC: 1536d | Read file or device (Read 4 bytes on handle 5)
2018-12-17T23:07:36.083724537Z 66 PC: 1537d | Move file pointer
2018-12-17T23:07:36.086245576Z 62 PC: 153be | Close file
2018-12-17T23:07:36.08801365Z 79 PC: 153c2 | Find next file
2018-12-17T23:07:36.091431595Z 61 PC: 15360 | Open file (Filename = 'PAH.COM')
2018-12-17T23:07:36.097401908Z 63 PC: 1536d | Read file or device (Read 4 bytes on handle 5)
2018-12-17T23:07:36.102493198Z 66 PC: 1537d | Move file pointer
2018-12-17T23:07:36.103925701Z 62 PC: 153be | Close file
2018-12-17T23:07:36.105974051Z 79 PC: 153c2 | Find next file
2018-12-17T23:07:36.109005028Z 61 PC: 15360 | Open file (Filename = 'TEST.COM')
2018-12-17T23:07:36.114902144Z 63 PC: 1536d | Read file or device (Read 4 bytes on handle 5)
2018-12-17T23:07:36.119302866Z 62 PC: 153be | Close file
2018-12-17T23:07:36.121800692Z 79 PC: 153c2 | Find next file
2018-12-17T23:07:36.124943209Z 26 PC: 153d0 | Set disk transfer address
2018-12-17T23:07:36.127686736Z 9 PC: 12e5b | Display string (String= '(VBA32 DUMMY FILE)')
2018-12-17T23:07:36.131665495Z 76 PC: 12e60 | Terminate with return code (Return code = '0')