Sample viewer

vx.netlux.org/Virus.DOS.WeihNacht.1827

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GIF

Syscalls:

Time Syscall Op Syscall Name
2018-12-17T22:48:28.631115631Z 42 PC: 12eb5 | Get date 0x12eb5: cmp dx, 0xc18
0x12eb9: jl 0x12ebe
0x12ebb: jmp 0x12f91
0x12ebe: mov ax, cs
0x12ec0: mov word ptr cs:[0xf8], ax
0x12ec4: mov word ptr cs:[0xfc], ax
0x12ec8: mov word ptr cs:[0x100], ax
0x12ecc: mov ah, 0x51
0x12ece: int 0x21
0x12ed0: mov es, bx
0x12ed2: mov es, word ptr es:[0x2c]
0x12ed7: mov word ptr cs:[0xf4], es
0x12edc: xor di, di
0x12ede: mov cx, 0x7fff
0x12ee1: mov al, 0
0x12ee3: cmp byte ptr es:[di], 0x43
0x12ee7: je 0x12eed
0x12ee9: repne scasb al, byte ptr es:[di]
0x12eeb: jmp 0x12ee3
0x12eed: mov dx, cs
2018-12-17T22:48:28.633692857Z 81 PC: 12ed0 | Get current PSP
2018-12-17T22:48:28.635211494Z 74 PC: 12f5c | Reallocate memory
2018-12-17T22:48:28.637633573Z 75 PC: 12f77 | Execute program
2018-12-17T22:48:28.660470907Z 80 PC: 14859 | Set current PSP
2018-12-17T22:48:28.66144746Z 48 PC: 1485e | Get DOS version
2018-12-17T22:48:28.663313388Z 99 PC: 1b040 | Get DBCS lead byte table pointer
2018-12-17T22:48:28.666106189Z 101 PC: 148e4 | Get extended country info
2018-12-17T22:48:28.667347284Z 99 PC: 148ea | Get DBCS lead byte table pointer
2018-12-17T22:48:28.669019511Z 74 PC: 1494c | Reallocate memory
2018-12-17T22:48:28.670277184Z 25 PC: 14983 | Get default drive
2018-12-17T22:48:28.671237549Z 37 PC: 14443 | Set interrupt vector (Interrupt = '34' AKA 'Random write')
2018-12-17T22:48:28.672782788Z 37 PC: 1444a | Set interrupt vector (Interrupt = '35' AKA 'Get file size in records')
2018-12-17T22:48:28.673694506Z 37 PC: 14451 | Set interrupt vector (Interrupt = '36' AKA 'Set random record number')
2018-12-17T22:48:28.676350217Z 74 PC: 135ec | Reallocate memory
2018-12-17T22:48:28.67794163Z 72 PC: 1362d | Allocate memory
2018-12-17T22:48:28.679338582Z 72 PC: 13665 | Allocate memory
2018-12-17T22:48:28.680594074Z 72 PC: 1366d | Allocate memory

{"DateBased":true,"Day":1,"Month":1,"Year":1980,"Hour":0,"Min":0,"Second":0,"TimeBased":false,"OriginalID":9568,"SideJobID":0}

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GIF

Syscalls:

Time Syscall Op Syscall Name
2018-12-25T12:23:19.742927895Z 42 PC: 12eb5 | Get date 0x12eb5: cmp dx, 0xc18
0x12eb9: jl 0x12ebe
0x12ebb: jmp 0x12f91
0x12ebe: mov ax, cs
0x12ec0: mov word ptr cs:[0xf8], ax
0x12ec4: mov word ptr cs:[0xfc], ax
0x12ec8: mov word ptr cs:[0x100], ax
0x12ecc: mov ah, 0x51
0x12ece: int 0x21
0x12ed0: mov es, bx
0x12ed2: mov es, word ptr es:[0x2c]
0x12ed7: mov word ptr cs:[0xf4], es
0x12edc: xor di, di
0x12ede: mov cx, 0x7fff
0x12ee1: mov al, 0
0x12ee3: cmp byte ptr es:[di], 0x43
0x12ee7: je 0x12eed
0x12ee9: repne scasb al, byte ptr es:[di]
0x12eeb: jmp 0x12ee3
0x12eed: mov dx, cs
2018-12-25T12:23:19.746032075Z 81 PC: 12ed0 | Get current PSP
2018-12-25T12:23:19.747364302Z 74 PC: 12f5c | Reallocate memory
2018-12-25T12:23:19.748958462Z 75 PC: 12f77 | Execute program
2018-12-25T12:23:19.77348873Z 80 PC: 14859 | Set current PSP
2018-12-25T12:23:19.775305892Z 48 PC: 1485e | Get DOS version
2018-12-25T12:23:19.777419359Z 99 PC: 1b040 | Get DBCS lead byte table pointer
2018-12-25T12:23:19.78164386Z 101 PC: 148e4 | Get extended country info
2018-12-25T12:23:19.784044946Z 99 PC: 148ea | Get DBCS lead byte table pointer
2018-12-25T12:23:19.785819922Z 74 PC: 1494c | Reallocate memory
2018-12-25T12:23:19.788610217Z 25 PC: 14983 | Get default drive
2018-12-25T12:23:19.794421186Z 37 PC: 14443 | Set interrupt vector (Interrupt = '34' AKA 'Random write')
2018-12-25T12:23:19.796320258Z 37 PC: 1444a | Set interrupt vector (Interrupt = '35' AKA 'Get file size in records')
2018-12-25T12:23:19.803494318Z 37 PC: 14451 | Set interrupt vector (Interrupt = '36' AKA 'Set random record number')
2018-12-25T12:23:19.808729261Z 74 PC: 135ec | Reallocate memory
2018-12-25T12:23:19.810380148Z 72 PC: 1362d | Allocate memory
2018-12-25T12:23:19.812918915Z 72 PC: 13665 | Allocate memory
2018-12-25T12:23:19.816225188Z 72 PC: 1366d | Allocate memory

{"DateBased":true,"Day":24,"Month":12,"Year":1980,"Hour":0,"Min":0,"Second":0,"TimeBased":false,"OriginalID":9568,"SideJobID":0}

.

GIF

Syscalls:

Time Syscall Op Syscall Name
2018-12-25T12:23:19.789601761Z 42 PC: 12eb5 | Get date 0x12eb5: cmp dx, 0xc18
0x12eb9: jl 0x12ebe
0x12ebb: jmp 0x12f91
0x12ebe: mov ax, cs
0x12ec0: mov word ptr cs:[0xf8], ax
0x12ec4: mov word ptr cs:[0xfc], ax
0x12ec8: mov word ptr cs:[0x100], ax
0x12ecc: mov ah, 0x51
0x12ece: int 0x21
0x12ed0: mov es, bx
0x12ed2: mov es, word ptr es:[0x2c]
0x12ed7: mov word ptr cs:[0xf4], es
0x12edc: xor di, di
0x12ede: mov cx, 0x7fff
0x12ee1: mov al, 0
0x12ee3: cmp byte ptr es:[di], 0x43
0x12ee7: je 0x12eed
0x12ee9: repne scasb al, byte ptr es:[di]
0x12eeb: jmp 0x12ee3
0x12eed: mov dx, cs