Analysis
-
max time kernel
19s -
max time network
23s -
platform
windows10-2004_x64 -
resource
win10v2004-20240226-en -
resource tags
arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system -
submitted
26-04-2024 18:11
Static task
static1
1 signatures
Behavioral task
behavioral1
Sample
winserv.exe
Resource
win7-20240215-en
windows7-x64
5 signatures
600 seconds
General
-
Target
winserv.exe
-
Size
10.2MB
-
MD5
3f4f5a6cb95047fea6102bd7d2226aa9
-
SHA1
fc09dd898b6e7ff546e4a7517a715928fbafc297
-
SHA256
99fd9e75e6241eff30e01c5b59df9e901fb24d12bee89c069cc6158f78b3cc98
-
SHA512
de5c8155f426a4e55953ae85410c7d9ad84f5643c30865fc036d1270310e28754772bd0f3093444a16ef0c1fa3db6c56301746fb5e7f03ce692bfdad0c4fb688
-
SSDEEP
196608:iz+UZcWP4jBrfWgEgIV8Rzy7Vj4FZvEo:i6UZcWWeVj4FZ
Malware Config
Signatures
-
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-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation winserv.exe -
Suspicious behavior: EnumeratesProcesses 10 IoCs
Processes:
winserv.exewinserv.exepid process 4156 winserv.exe 4156 winserv.exe 4156 winserv.exe 4156 winserv.exe 4156 winserv.exe 4156 winserv.exe 2688 winserv.exe 2688 winserv.exe 2688 winserv.exe 2688 winserv.exe -
Suspicious use of AdjustPrivilegeToken 4 IoCs
Processes:
winserv.exewinserv.exedescription pid process Token: SeDebugPrivilege 4156 winserv.exe Token: SeTakeOwnershipPrivilege 2688 winserv.exe Token: SeTcbPrivilege 2688 winserv.exe Token: SeTcbPrivilege 2688 winserv.exe -
Suspicious use of SetWindowsHookEx 8 IoCs
Processes:
winserv.exewinserv.exepid process 4156 winserv.exe 4156 winserv.exe 4156 winserv.exe 4156 winserv.exe 2688 winserv.exe 2688 winserv.exe 2688 winserv.exe 2688 winserv.exe
Processes
-
C:\Users\Admin\AppData\Local\Temp\winserv.exe"C:\Users\Admin\AppData\Local\Temp\winserv.exe"1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:4156 -
C:\Users\Admin\AppData\Local\Temp\winserv.exeC:\Users\Admin\AppData\Local\Temp\winserv.exe -second2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:2688
-