Analysis
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max time kernel
1563s -
max time network
1564s -
platform
windows7_x64 -
resource
win7-20231129-en -
resource tags
arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system -
submitted
02-02-2024 00:15
Behavioral task
behavioral1
Sample
creal.pyc
Resource
win7-20231129-en
Behavioral task
behavioral2
Sample
creal.pyc
Resource
win10v2004-20231215-en
General
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Target
creal.pyc
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Size
60KB
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MD5
5d3d31f8c9de3a8c759803aa2f9276bd
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SHA1
27df752ac51857b8976fa7182ca2888221231be5
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SHA256
da6df2fa468c7b424d8200b742a354be382371625f30455e08a9ae15e2b5efed
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SHA512
eb5bcbeb69496d7937f88fe45ea19bfd8bad1364bb4708e31f8d192dbd524ad8d62fa46ad0ffd33d4c8ec89979abe95217a0830a628dcfb4c6af0de5f3bb2cac
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SSDEEP
1536:urjr+5Ixj33TRdOOamKbe9u6m4133Jbd/:uD+5Ixb3asut4133j
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-1-5-21-3470981204-343661084-3367201002-1000_CLASSES\pyc_auto_file\shell rundll32.exe Key created \REGISTRY\USER\S-1-5-21-3470981204-343661084-3367201002-1000_CLASSES\pyc_auto_file\shell\Read\command rundll32.exe Set value (str) \REGISTRY\USER\S-1-5-21-3470981204-343661084-3367201002-1000_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-1-5-21-3470981204-343661084-3367201002-1000_Classes\Local Settings rundll32.exe Key created \REGISTRY\USER\S-1-5-21-3470981204-343661084-3367201002-1000_CLASSES\.pyc rundll32.exe Key created \REGISTRY\USER\S-1-5-21-3470981204-343661084-3367201002-1000_CLASSES\pyc_auto_file\shell\Read rundll32.exe Key created \REGISTRY\USER\S-1-5-21-3470981204-343661084-3367201002-1000_CLASSES\pyc_auto_file rundll32.exe Set value (str) \REGISTRY\USER\S-1-5-21-3470981204-343661084-3367201002-1000_CLASSES\pyc_auto_file\ rundll32.exe Set value (str) \REGISTRY\USER\S-1-5-21-3470981204-343661084-3367201002-1000_CLASSES\.pyc\ = "pyc_auto_file" rundll32.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
Processes:
AcroRd32.exepid process 2904 AcroRd32.exe 2904 AcroRd32.exe -
Suspicious use of WriteProcessMemory 7 IoCs
Processes:
cmd.exerundll32.exedescription pid process target process PID 2372 wrote to memory of 2544 2372 cmd.exe rundll32.exe PID 2372 wrote to memory of 2544 2372 cmd.exe rundll32.exe PID 2372 wrote to memory of 2544 2372 cmd.exe rundll32.exe PID 2544 wrote to memory of 2904 2544 rundll32.exe AcroRd32.exe PID 2544 wrote to memory of 2904 2544 rundll32.exe AcroRd32.exe PID 2544 wrote to memory of 2904 2544 rundll32.exe AcroRd32.exe PID 2544 wrote to memory of 2904 2544 rundll32.exe AcroRd32.exe
Processes
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C:\Windows\system32\cmd.execmd /c C:\Users\Admin\AppData\Local\Temp\creal.pyc1⤵
- Suspicious use of WriteProcessMemory
PID:2372 -
C:\Windows\system32\rundll32.exe"C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\creal.pyc2⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:2544 -
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\creal.pyc"3⤵
- Suspicious use of SetWindowsHookEx
PID:2904
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
3KB
MD585b232070cdc12565bee9da84ab32068
SHA12f819744718509648e8a1f3ddfb559041708e910
SHA2566b4398bc565c5069e55e90cd75185a3d4156216723f3ca15390750a65a785ddd
SHA51265be36492f1cb8428e2a85af6b00fd7125e6fd9b5ce3f777cee51cd30b5800bad401cd2593da466362b629c87f1574e3ee7ff07597bc9e8811def689cbaa081a