Analysis
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max time kernel
119s -
max time network
120s -
platform
windows7_x64 -
resource
win7-20240220-en -
resource tags
arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system -
submitted
24-06-2024 14:30
Behavioral task
behavioral1
Sample
Waltuhium.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
Waltuhium.exe
Resource
win10v2004-20240508-en
Behavioral task
behavioral3
Sample
Stub.pyc
Resource
win7-20240220-en
Behavioral task
behavioral4
Sample
Stub.pyc
Resource
win10v2004-20240508-en
General
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Target
Stub.pyc
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Size
87KB
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MD5
3aa483959cccc2432773a106815b6835
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SHA1
3dd99907ff813b80ba9b659889ed41976b5bc32c
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SHA256
5cadfc106c48f62bbc8a202b031a91739523c550c73b44fd1d41f42daa681cc3
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SHA512
1d578838e8ec0a645018af73e1415be81426d46a5857fcac07d2fc7fa5a60e1e1cfb79331b3f7ea7540b243597114059dec16d51907f3b27f4a831799a720113
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SSDEEP
1536:ZaYCH9czJ+7OF2+4fAIlEONnWDfRtdNvo7cbSQNtdhq09J7Xeql4gxMiLqDx/BM0:8xH9oJ+7r1WDfRtdNv8cbSQNtdhq09J+
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 9 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000_CLASSES\pyc_auto_file\shell\Read rundll32.exe Key created \REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000_CLASSES\pyc_auto_file\shell rundll32.exe Set value (str) \REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000_CLASSES\pyc_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\"" rundll32.exe Key created \REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000_CLASSES\.pyc rundll32.exe Set value (str) \REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000_CLASSES\.pyc\ = "pyc_auto_file" rundll32.exe Set value (str) \REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000_CLASSES\pyc_auto_file\ rundll32.exe Key created \REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000_CLASSES\pyc_auto_file\shell\Read\command rundll32.exe Key created \REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000_Classes\Local Settings rundll32.exe Key created \REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000_CLASSES\pyc_auto_file rundll32.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 2772 AcroRd32.exe 2772 AcroRd32.exe -
Suspicious use of WriteProcessMemory 7 IoCs
description pid Process procid_target PID 2192 wrote to memory of 2516 2192 cmd.exe 29 PID 2192 wrote to memory of 2516 2192 cmd.exe 29 PID 2192 wrote to memory of 2516 2192 cmd.exe 29 PID 2516 wrote to memory of 2772 2516 rundll32.exe 30 PID 2516 wrote to memory of 2772 2516 rundll32.exe 30 PID 2516 wrote to memory of 2772 2516 rundll32.exe 30 PID 2516 wrote to memory of 2772 2516 rundll32.exe 30
Processes
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C:\Windows\system32\cmd.execmd /c C:\Users\Admin\AppData\Local\Temp\Stub.pyc1⤵
- Suspicious use of WriteProcessMemory
PID:2192 -
C:\Windows\system32\rundll32.exe"C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\Stub.pyc2⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:2516 -
C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe"C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe" "C:\Users\Admin\AppData\Local\Temp\Stub.pyc"3⤵
- Suspicious use of SetWindowsHookEx
PID:2772
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
3KB
MD5bad2b65ae135057dd3adc5f93c886e6b
SHA160915ee5fb033a4ea690cf67f5a3a6c85bada773
SHA25682f161fe3c20e3fbfd37b0df19c9a77f4c80679969508b7f978e25b25c594e9f
SHA512fe5d35552955cdd262f9c7eb1557341a512dd0c41daf9c1faf2364b612d6da2d3cf3dbfcc95b73b57e68fd7ef0dedf94587b4d913f1f716eaee8f1f00e6c3219