Analysis
- user interaction
yes - max time kernel
22s - max time network
19s - platform
windows10-2004_x64 - resource
win10v2004-20260513-en - resource tags
arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows - submitted
24/08/2026, 03:33
Static task
static1
1 signatures
Behavioral task
behavioral1
Sample
Prebuild Loader.exe
Resource
win10v2004-20260513-en
windows10-2004-x64
7 signatures
150 seconds
General
- Target Prebuild Loader.exe
- Size 1.1MB
- Sample260824-d4b8hsseqg
- SHA256 83d8b776ccc1500dfc9740f497844f82ba414c7063ab46bf804f6219af092fa3
- MD5 b5157c502b4803740d404e0a57454e5a
- SHA1 503c186b49993f9af03d15fe9b4a0804cf860cc5
- SHA512 4abdc58d50a381b23d38855903559db82977832eba9b583d1e6029cf2b254f3c68079c4303f17b9f09d74e683432d0a80883d2b42f0462315005290ee71cf170
- SSDEEP 12288:Ybs/m0E54jwaFXGc8lEBBBHGBKq2IZwDrOHvfqItNqdg:YbOVE5ifGPRZw+Hvf3fd
- TLSH T1DA357C83E7A385D8C116C9B5534BF137F9627C8E4B157197ABC41E633A67BA4E22CB00
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
1/10
Malware Config
Signatures
- Checks SCSI registry key(s) 3 TTPs 3 IoCs
SCSI information is often read in order to detect sandboxing environments.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_WDC&Prod_WDS100T2B0A\4&215468a5&0&000000 taskmgr.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_WDC&Prod_WDS100T2B0A\4&215468a5&0&000000\Properties\{b725f130-47ef-101a-a5f1-02608c9eebac}\000A taskmgr.exe Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_WDC&Prod_WDS100T2B0A\4&215468a5&0&000000\FriendlyName taskmgr.exe - Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
description ioc Process Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 Prebuild Loader.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString Prebuild Loader.exe - Modifies registry class 1 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-204488895-2999877624-296153668-1000_Classes\Local Settings taskmgr.exe - Suspicious behavior: EnumeratesProcesses 19 IoCs
pid Process 1844 taskmgr.exe 1844 taskmgr.exe 1844 taskmgr.exe 1844 taskmgr.exe 1844 taskmgr.exe 1844 taskmgr.exe 1844 taskmgr.exe 1844 taskmgr.exe 1844 taskmgr.exe 1844 taskmgr.exe 1844 taskmgr.exe 1844 taskmgr.exe 1844 taskmgr.exe 1844 taskmgr.exe 1844 taskmgr.exe 1844 taskmgr.exe 1844 taskmgr.exe 1844 taskmgr.exe 1844 taskmgr.exe - Suspicious use of AdjustPrivilegeToken 3 IoCs
description pid Process Token: SeDebugPrivilege 1844 taskmgr.exe Token: SeSystemProfilePrivilege 1844 taskmgr.exe Token: SeCreateGlobalPrivilege 1844 taskmgr.exe - Suspicious use of FindShellTrayWindow 29 IoCs
pid Process 1844 taskmgr.exe 1844 taskmgr.exe 1844 taskmgr.exe 1844 taskmgr.exe 1844 taskmgr.exe 1844 taskmgr.exe 1844 taskmgr.exe 1844 taskmgr.exe 1844 taskmgr.exe 1844 taskmgr.exe 1844 taskmgr.exe 1844 taskmgr.exe 1844 taskmgr.exe 1844 taskmgr.exe 1844 taskmgr.exe 1844 taskmgr.exe 1844 taskmgr.exe 1844 taskmgr.exe 1844 taskmgr.exe 1844 taskmgr.exe 1844 taskmgr.exe 1844 taskmgr.exe 1844 taskmgr.exe 1844 taskmgr.exe 1844 taskmgr.exe 1844 taskmgr.exe 1844 taskmgr.exe 1844 taskmgr.exe 1844 taskmgr.exe - Suspicious use of SendNotifyMessage 29 IoCs
pid Process 1844 taskmgr.exe 1844 taskmgr.exe 1844 taskmgr.exe 1844 taskmgr.exe 1844 taskmgr.exe 1844 taskmgr.exe 1844 taskmgr.exe 1844 taskmgr.exe 1844 taskmgr.exe 1844 taskmgr.exe 1844 taskmgr.exe 1844 taskmgr.exe 1844 taskmgr.exe 1844 taskmgr.exe 1844 taskmgr.exe 1844 taskmgr.exe 1844 taskmgr.exe 1844 taskmgr.exe 1844 taskmgr.exe 1844 taskmgr.exe 1844 taskmgr.exe 1844 taskmgr.exe 1844 taskmgr.exe 1844 taskmgr.exe 1844 taskmgr.exe 1844 taskmgr.exe 1844 taskmgr.exe 1844 taskmgr.exe 1844 taskmgr.exe
Processes
-
C:\Users\Admin\AppData\Local\Temp\Prebuild Loader.exe"C:\Users\Admin\AppData\Local\Temp\Prebuild Loader.exe"1⤵
- Checks processor information in registry
PID:4544
-
C:\Windows\system32\taskmgr.exe"C:\Windows\system32\taskmgr.exe" /41⤵
- Checks SCSI registry key(s)
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
PID:1844
-
C:\Windows\System32\rundll32.exeC:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding1⤵PID:4052