Analysis
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max time kernel
104s -
max time network
16s -
platform
windows7_x64 -
resource
win7-20240220-en -
resource tags
arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system -
submitted
28-04-2024 17:07
Behavioral task
behavioral1
Sample
Celery/Celery Bootstrapper.exe
Resource
win7-20240220-en
Behavioral task
behavioral2
Sample
Celery/Celery Bootstrapper.exe
Resource
win10v2004-20240426-en
Behavioral task
behavioral3
Sample
cstealer.pyc
Resource
win7-20240220-en
Behavioral task
behavioral4
Sample
cstealer.pyc
Resource
win10v2004-20240419-en
General
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Target
cstealer.pyc
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Size
39KB
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MD5
8c90ffe525d980a3115be90a6a275a2d
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SHA1
8bab4eec2c508a8735bb218affbf0e83f8bd9cb7
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SHA256
450a0bdf0c033773d23c4e163ce7022addd8a7650e14e8371d3c4b832ece2b79
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SHA512
29f5615b0eb37756b57052f9efa296d6543a654ebe84d88dd529df9c45358312edae916378b04a4852218fde7395141ba314c1aa408029edeea43f6af4a7586f
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SSDEEP
768:fu46JcMk17WnMGF+5JsylM3jprKBBbxoZUM4PqVfqrY9Wygqxie3HrKl4HYiBeHP:FgdkW0JsyC3F6OUM6qVirY9WygWiMujP
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
Processes:
rundll32.exedescription 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 Key created \REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000_CLASSES\pyc_auto_file rundll32.exe Set value (str) \REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000_CLASSES\pyc_auto_file\ rundll32.exe Set value (str) \REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000_CLASSES\.pyc\ = "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 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\Local Settings rundll32.exe Key created \REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000_CLASSES\.pyc rundll32.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
Processes:
AcroRd32.exepid process 2696 AcroRd32.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
Processes:
AcroRd32.exepid process 2696 AcroRd32.exe 2696 AcroRd32.exe -
Suspicious use of WriteProcessMemory 7 IoCs
Processes:
cmd.exerundll32.exedescription pid process target process PID 2064 wrote to memory of 2156 2064 cmd.exe rundll32.exe PID 2064 wrote to memory of 2156 2064 cmd.exe rundll32.exe PID 2064 wrote to memory of 2156 2064 cmd.exe rundll32.exe PID 2156 wrote to memory of 2696 2156 rundll32.exe AcroRd32.exe PID 2156 wrote to memory of 2696 2156 rundll32.exe AcroRd32.exe PID 2156 wrote to memory of 2696 2156 rundll32.exe AcroRd32.exe PID 2156 wrote to memory of 2696 2156 rundll32.exe AcroRd32.exe
Processes
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C:\Windows\system32\cmd.execmd /c C:\Users\Admin\AppData\Local\Temp\cstealer.pyc1⤵
- Suspicious use of WriteProcessMemory
PID:2064 -
C:\Windows\system32\rundll32.exe"C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\cstealer.pyc2⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:2156 -
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\cstealer.pyc"3⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of SetWindowsHookEx
PID:2696
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Roaming\Adobe\Acrobat\9.0\SharedDataEventsFilesize
3KB
MD59e2c5014a6d0a55702c9ccde7a565f58
SHA150e3578cc61bb32136ebce0e275993b685bf4e09
SHA256fc53193b71a66658aa14e4e5dba9479eb8e9023e8dc9dd60efc14d11f928e9fe
SHA51277507c358e05af0d869cf8153bcdb190126fc998a5783797904014ad64e74229586e9d69b1e39831d892d79089956b2cb90883764dfc3ae102ac6a141bb2399b