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Analysis
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max time kernel
122s -
max time network
157s -
platform
windows7_x64 -
resource
win7-20231215-en -
resource tags
arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system -
submitted
10/01/2024, 22:53
Static task
static1
Behavioral task
behavioral1
Sample
51d72a84097c3f96e11e6ef825fde3fe.exe
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
51d72a84097c3f96e11e6ef825fde3fe.exe
Resource
win10v2004-20231222-en
General
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Target
51d72a84097c3f96e11e6ef825fde3fe.exe
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Size
620KB
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MD5
51d72a84097c3f96e11e6ef825fde3fe
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SHA1
09ab0b90e537d3db5db078505b1d3b16a171ac6c
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SHA256
48e978e540ece1077dd2f836f17f3ae6422004dc7475be80d63676039315883c
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SHA512
7c00a47c6ab614f6aebcdf98e78b256f021255612eee04818e9bde2b91b143339ff693e7f2472e42318092c84e14d37d9e49b41ba1f29d439bf89da4f5db08ec
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SSDEEP
12288:9vsCG6a7hOPo0VdfG1mIn0sSelRnlUZrHQl8:9vsB6aIJH6m0hl9lUtwl
Malware Config
Signatures
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Modifies WinLogon for persistence 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "Explorer.exe C:\\WINDOWS\\winlogon.exe" 51d72a84097c3f96e11e6ef825fde3fe.exe -
Checks BIOS information in registry 2 TTPs 2 IoCs
BIOS information is often read in order to detect sandboxing environments.
description ioc Process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion 51d72a84097c3f96e11e6ef825fde3fe.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate 51d72a84097c3f96e11e6ef825fde3fe.exe -
Drops file in Windows directory 2 IoCs
description ioc Process File created C:\WINDOWS\winlogon.exe 51d72a84097c3f96e11e6ef825fde3fe.exe File opened for modification C:\WINDOWS\winlogon.exe 51d72a84097c3f96e11e6ef825fde3fe.exe -
Modifies registry class 7 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{BD211730-848A-F6FE-25B7-CBFA4A410CDA}\InProcServer32\ = "%SystemRoot%\\SysWow64\\UserAccountControlSettings.dll" 51d72a84097c3f96e11e6ef825fde3fe.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{BD211730-848A-F6FE-25B7-CBFA4A410CDA}\InProcServer32\ThreadingModel = "Apartment" 51d72a84097c3f96e11e6ef825fde3fe.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{BD211730-848A-F6FE-25B7-CBFA4A410CDA} 51d72a84097c3f96e11e6ef825fde3fe.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{BD211730-848A-F6FE-25B7-CBFA4A410CDA}\ = "User Account Control Settings" 51d72a84097c3f96e11e6ef825fde3fe.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{BD211730-848A-F6FE-25B7-CBFA4A410CDA}\AppID = "{06C792F8-6212-4F39-BF70-E8C0AC965C23}" 51d72a84097c3f96e11e6ef825fde3fe.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{BD211730-848A-F6FE-25B7-CBFA4A410CDA}\LocalizedString = "@%SystemRoot%\\system32\\UserAccountControlSettings.dll,-70" 51d72a84097c3f96e11e6ef825fde3fe.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{BD211730-848A-F6FE-25B7-CBFA4A410CDA}\InProcServer32 51d72a84097c3f96e11e6ef825fde3fe.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: 33 2592 51d72a84097c3f96e11e6ef825fde3fe.exe Token: SeIncBasePriorityPrivilege 2592 51d72a84097c3f96e11e6ef825fde3fe.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 2592 51d72a84097c3f96e11e6ef825fde3fe.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\51d72a84097c3f96e11e6ef825fde3fe.exe"C:\Users\Admin\AppData\Local\Temp\51d72a84097c3f96e11e6ef825fde3fe.exe"1⤵
- Modifies WinLogon for persistence
- Checks BIOS information in registry
- Drops file in Windows directory
- Modifies registry class
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:2592