Analysis
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max time kernel
141s -
max time network
153s -
platform
windows7_x64 -
resource
win7-20240708-en -
resource tags
arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system -
submitted
26-08-2024 18:56
Static task
static1
1 signatures
Behavioral task
behavioral1
Sample
winserv.exe
Resource
win7-20240708-en
windows7-x64
6 signatures
150 seconds
General
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Target
winserv.exe
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Size
10.2MB
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MD5
3f4f5a6cb95047fea6102bd7d2226aa9
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SHA1
fc09dd898b6e7ff546e4a7517a715928fbafc297
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SHA256
99fd9e75e6241eff30e01c5b59df9e901fb24d12bee89c069cc6158f78b3cc98
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SHA512
de5c8155f426a4e55953ae85410c7d9ad84f5643c30865fc036d1270310e28754772bd0f3093444a16ef0c1fa3db6c56301746fb5e7f03ce692bfdad0c4fb688
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SSDEEP
196608:iz+UZcWP4jBrfWgEgIV8Rzy7Vj4FZvEo:i6UZcWWeVj4FZ
Malware Config
Signatures
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Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
winserv.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-2958949473-3205530200-1453100116-1000\Control Panel\International\Geo\Nation winserv.exe -
System Location Discovery: System Language Discovery 1 TTPs 2 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
Processes:
winserv.exewinserv.exedescription ioc process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language winserv.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language winserv.exe -
Suspicious behavior: EnumeratesProcesses 9 IoCs
Processes:
winserv.exewinserv.exepid process 2644 winserv.exe 2644 winserv.exe 2644 winserv.exe 2644 winserv.exe 2644 winserv.exe 2784 winserv.exe 2784 winserv.exe 2784 winserv.exe 2784 winserv.exe -
Suspicious use of AdjustPrivilegeToken 4 IoCs
Processes:
winserv.exewinserv.exedescription pid process Token: SeDebugPrivilege 2644 winserv.exe Token: SeTakeOwnershipPrivilege 2784 winserv.exe Token: SeTcbPrivilege 2784 winserv.exe Token: SeTcbPrivilege 2784 winserv.exe -
Suspicious use of SetWindowsHookEx 8 IoCs
Processes:
winserv.exewinserv.exepid process 2644 winserv.exe 2644 winserv.exe 2644 winserv.exe 2644 winserv.exe 2784 winserv.exe 2784 winserv.exe 2784 winserv.exe 2784 winserv.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\winserv.exe"C:\Users\Admin\AppData\Local\Temp\winserv.exe"1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:2644 -
C:\Users\Admin\AppData\Local\Temp\winserv.exeC:\Users\Admin\AppData\Local\Temp\winserv.exe -second2⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:2784
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