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Analysis
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max time kernel
150s -
max time network
157s -
platform
windows10-2004_x64 -
resource
win10v2004-20240412-en -
resource tags
arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system -
submitted
22/04/2024, 21:14
Static task
static1
Behavioral task
behavioral1
Sample
a3ae588c463e6c816baedc6f5b29cfb89119aa483b31b6b7f62c23bca38bf899.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
a3ae588c463e6c816baedc6f5b29cfb89119aa483b31b6b7f62c23bca38bf899.exe
Resource
win10v2004-20240412-en
General
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Target
a3ae588c463e6c816baedc6f5b29cfb89119aa483b31b6b7f62c23bca38bf899.exe
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Size
198KB
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MD5
101dd1992cd572375f6a8c3c2b1f9536
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SHA1
f516b6e64a3d6f82d598ccdb4ad663698483ac47
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SHA256
a3ae588c463e6c816baedc6f5b29cfb89119aa483b31b6b7f62c23bca38bf899
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SHA512
b5460494e799ff7b3d5506eaa27a42cde14fb5f230ec1566aee53e52d4c938edd6a4523e20ccec8ca6dfce5961087141fe2a8ae75917f566de821767379a432a
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SSDEEP
6144:rBs27MMLyX5HXXXDTXXXOGqIII+pXXX5AYjKXXXDoXXXG6XXXxXXXLIIIEAkOCOF:rK20HXXX/XXXFqIIIcXXX5j2XXXcXXXg
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.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-1132431369-515282257-1998160155-1000\Control Panel\International\Geo\Nation a3ae588c463e6c816baedc6f5b29cfb89119aa483b31b6b7f62c23bca38bf899.exe -
Executes dropped EXE 1 IoCs
pid Process 996 fmahost.exe -
Drops file in Windows directory 2 IoCs
description ioc Process File created C:\Windows\Debug\fmahost.exe a3ae588c463e6c816baedc6f5b29cfb89119aa483b31b6b7f62c23bca38bf899.exe File opened for modification C:\Windows\Debug\fmahost.exe a3ae588c463e6c816baedc6f5b29cfb89119aa483b31b6b7f62c23bca38bf899.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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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 fmahost.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz fmahost.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeIncBasePriorityPrivilege 1080 a3ae588c463e6c816baedc6f5b29cfb89119aa483b31b6b7f62c23bca38bf899.exe -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 1080 wrote to memory of 868 1080 a3ae588c463e6c816baedc6f5b29cfb89119aa483b31b6b7f62c23bca38bf899.exe 88 PID 1080 wrote to memory of 868 1080 a3ae588c463e6c816baedc6f5b29cfb89119aa483b31b6b7f62c23bca38bf899.exe 88 PID 1080 wrote to memory of 868 1080 a3ae588c463e6c816baedc6f5b29cfb89119aa483b31b6b7f62c23bca38bf899.exe 88
Processes
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C:\Users\Admin\AppData\Local\Temp\a3ae588c463e6c816baedc6f5b29cfb89119aa483b31b6b7f62c23bca38bf899.exe"C:\Users\Admin\AppData\Local\Temp\a3ae588c463e6c816baedc6f5b29cfb89119aa483b31b6b7f62c23bca38bf899.exe"1⤵
- Checks computer location settings
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1080 -
C:\Windows\SysWOW64\cmd.exe"C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\A3AE58~1.EXE > nul2⤵PID:868
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C:\Windows\Debug\fmahost.exeC:\Windows\Debug\fmahost.exe1⤵
- Executes dropped EXE
- Checks processor information in registry
PID:996
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
198KB
MD5f63f4d9484376f1e814d5b01d405caf1
SHA13849e4f20ba7182462cab219f59a7c4c8c290f6b
SHA256fc3e65bd4a2ecb40c1d51f659b11d9f358fdc75b24cfc6cfd08bb7a35530b375
SHA512559b4a2d9c76edec84a63f396714972bca36afc033bf1b0077fb9b789bae5a3f6725874fba4328e6b940cb3e2787c371da07489dfbff59edd12b7954dff0db31