Analysis
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max time kernel
290s -
max time network
33s -
platform
windows7_x64 -
resource
win7-20230220-en -
resource tags
arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system -
submitted
22/04/2023, 22:35
Behavioral task
behavioral1
Sample
Windows_Loader/Keys.ini
Resource
win7-20230220-en
Behavioral task
behavioral2
Sample
Windows_Loader/Read me.txt
Resource
win7-20230220-en
Behavioral task
behavioral3
Sample
Windows_Loader/Windows Loader.exe
Resource
win7-20230220-en
Behavioral task
behavioral4
Sample
Windows_Loader/checksums.md5
Resource
win7-20230220-en
General
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Target
Windows_Loader/Windows Loader.exe
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Size
3.8MB
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MD5
323c0fd51071400b51eedb1be90a8188
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SHA1
0efc35935957c25193bbe9a83ab6caa25a487ada
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SHA256
2f2aba1e074f5f4baa08b524875461889f8f04d4ffc43972ac212e286022ab94
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SHA512
4c501c7135962e2f02b68d6069f2191ddb76f990528dacd209955a44972122718b9598400ba829abab2d4345b4e1a4b93453c8e7ba42080bd492a34cf8443e7e
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SSDEEP
49152:cEYCFEvlmOmTgtFM3uK5m3imrHuiff+puWV355FXw/+zuWV355FXw/+DuWV355FP:cEYzEFTgtFM3ukm3imPnt
Malware Config
Signatures
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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 Windows Loader.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate Windows Loader.exe -
resource yara_rule behavioral3/memory/928-116-0x0000000000400000-0x0000000000623000-memory.dmp upx behavioral3/memory/928-118-0x0000000000400000-0x0000000000623000-memory.dmp upx behavioral3/memory/928-119-0x0000000000400000-0x0000000000623000-memory.dmp upx behavioral3/memory/928-120-0x0000000000400000-0x0000000000623000-memory.dmp upx behavioral3/memory/928-121-0x0000000000400000-0x0000000000623000-memory.dmp upx -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Enumerates system info in registry 2 TTPs 2 IoCs
description ioc Process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\BaseBoardProduct Windows Loader.exe Key created \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS Windows Loader.exe -
Suspicious behavior: EnumeratesProcesses 1 IoCs
pid Process 928 Windows Loader.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 928 Windows Loader.exe -
Suspicious use of AdjustPrivilegeToken 4 IoCs
description pid Process Token: 33 928 Windows Loader.exe Token: SeIncBasePriorityPrivilege 928 Windows Loader.exe Token: 33 928 Windows Loader.exe Token: SeIncBasePriorityPrivilege 928 Windows Loader.exe -
Suspicious use of FindShellTrayWindow 1 IoCs
pid Process 928 Windows Loader.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\Windows_Loader\Windows Loader.exe"C:\Users\Admin\AppData\Local\Temp\Windows_Loader\Windows Loader.exe"1⤵
- Checks BIOS information in registry
- Enumerates system info in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
PID:928