Analysis
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max time kernel
121s -
max time network
124s -
platform
windows7_x64 -
resource
win7-20231020-en -
resource tags
arch:x64arch:x86image:win7-20231020-enlocale:en-usos:windows7-x64system -
submitted
30/10/2023, 13:41
Static task
static1
Behavioral task
behavioral1
Sample
oppgave1.c
Resource
win7-20231020-en
5 signatures
150 seconds
Behavioral task
behavioral2
Sample
oppgave1.c
Resource
win10v2004-20231023-en
3 signatures
150 seconds
General
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Target
oppgave1.c
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Size
2KB
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MD5
0e77143006004ce478359e79f23ba835
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SHA1
c0d93f6a21c6d7424e9d0a1e037f0823f2b0b251
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SHA256
eb1162a822edb073a563e7fba72fcc88d5dea94bb69c5989c21f5e5a97d77d2f
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SHA512
b6f48f1c36287c600dc59c5493bc328423c96ad8eaeaaecc54a1a1f1e612a7777d43554b534d86f006f42eecb2a06f7ea1447cbab6e7300a8fa529e85b351815
Score
3/10
Malware Config
Signatures
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Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Modifies registry class 12 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2952504676-3105837840-1406404655-1000_CLASSES\c_auto_file\shell\open\command\ = "%SystemRoot%\\system32\\NOTEPAD.EXE %1" rundll32.exe Key created \REGISTRY\USER\S-1-5-21-2952504676-3105837840-1406404655-1000_Classes\Local Settings rundll32.exe Key created \REGISTRY\USER\S-1-5-21-2952504676-3105837840-1406404655-1000_CLASSES\c_auto_file rundll32.exe Set value (str) \REGISTRY\USER\S-1-5-21-2952504676-3105837840-1406404655-1000_CLASSES\.c\ = "c_auto_file" rundll32.exe Key created \REGISTRY\USER\S-1-5-21-2952504676-3105837840-1406404655-1000_CLASSES\c_auto_file\shell rundll32.exe Set value (str) \REGISTRY\USER\S-1-5-21-2952504676-3105837840-1406404655-1000_CLASSES\c_auto_file\shell\edit\command\ = "%SystemRoot%\\system32\\NOTEPAD.EXE %1" rundll32.exe Key created \REGISTRY\USER\S-1-5-21-2952504676-3105837840-1406404655-1000_CLASSES\c_auto_file\shell\open rundll32.exe Set value (str) \REGISTRY\USER\S-1-5-21-2952504676-3105837840-1406404655-1000_CLASSES\c_auto_file\ rundll32.exe Key created \REGISTRY\USER\S-1-5-21-2952504676-3105837840-1406404655-1000_CLASSES\.c rundll32.exe Key created \REGISTRY\USER\S-1-5-21-2952504676-3105837840-1406404655-1000_CLASSES\c_auto_file\shell\edit rundll32.exe Key created \REGISTRY\USER\S-1-5-21-2952504676-3105837840-1406404655-1000_CLASSES\c_auto_file\shell\edit\command rundll32.exe Key created \REGISTRY\USER\S-1-5-21-2952504676-3105837840-1406404655-1000_CLASSES\c_auto_file\shell\open\command rundll32.exe -
Opens file in notepad (likely ransom note) 1 IoCs
pid Process 2412 NOTEPAD.EXE -
Suspicious use of FindShellTrayWindow 1 IoCs
pid Process 2412 NOTEPAD.EXE -
Suspicious use of WriteProcessMemory 6 IoCs
description pid Process procid_target PID 1188 wrote to memory of 2756 1188 cmd.exe 29 PID 1188 wrote to memory of 2756 1188 cmd.exe 29 PID 1188 wrote to memory of 2756 1188 cmd.exe 29 PID 2756 wrote to memory of 2412 2756 rundll32.exe 30 PID 2756 wrote to memory of 2412 2756 rundll32.exe 30 PID 2756 wrote to memory of 2412 2756 rundll32.exe 30
Processes
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C:\Windows\system32\cmd.execmd /c C:\Users\Admin\AppData\Local\Temp\oppgave1.c1⤵
- Suspicious use of WriteProcessMemory
PID:1188 -
C:\Windows\system32\rundll32.exe"C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\oppgave1.c2⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:2756 -
C:\Windows\system32\NOTEPAD.EXE"C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Local\Temp\oppgave1.c3⤵
- Opens file in notepad (likely ransom note)
- Suspicious use of FindShellTrayWindow
PID:2412
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