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Analysis
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max time kernel
141s -
max time network
131s -
platform
windows7_x64 -
resource
win7-20240221-en -
resource tags
arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-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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Deletes itself 1 IoCs
pid Process 2564 cmd.exe -
Executes dropped EXE 1 IoCs
pid Process 1668 iuyhost.exe -
Drops file in Windows directory 2 IoCs
description ioc Process File opened for modification C:\Windows\Debug\iuyhost.exe a3ae588c463e6c816baedc6f5b29cfb89119aa483b31b6b7f62c23bca38bf899.exe File created C:\Windows\Debug\iuyhost.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 iuyhost.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz iuyhost.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeIncBasePriorityPrivilege 1760 a3ae588c463e6c816baedc6f5b29cfb89119aa483b31b6b7f62c23bca38bf899.exe -
Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 1760 wrote to memory of 2564 1760 a3ae588c463e6c816baedc6f5b29cfb89119aa483b31b6b7f62c23bca38bf899.exe 29 PID 1760 wrote to memory of 2564 1760 a3ae588c463e6c816baedc6f5b29cfb89119aa483b31b6b7f62c23bca38bf899.exe 29 PID 1760 wrote to memory of 2564 1760 a3ae588c463e6c816baedc6f5b29cfb89119aa483b31b6b7f62c23bca38bf899.exe 29 PID 1760 wrote to memory of 2564 1760 a3ae588c463e6c816baedc6f5b29cfb89119aa483b31b6b7f62c23bca38bf899.exe 29
Processes
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C:\Users\Admin\AppData\Local\Temp\a3ae588c463e6c816baedc6f5b29cfb89119aa483b31b6b7f62c23bca38bf899.exe"C:\Users\Admin\AppData\Local\Temp\a3ae588c463e6c816baedc6f5b29cfb89119aa483b31b6b7f62c23bca38bf899.exe"1⤵
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1760 -
C:\Windows\SysWOW64\cmd.exe"C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\A3AE58~1.EXE > nul2⤵
- Deletes itself
PID:2564
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C:\Windows\Debug\iuyhost.exeC:\Windows\Debug\iuyhost.exe1⤵
- Executes dropped EXE
- Checks processor information in registry
PID:1668
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
198KB
MD572d2c2514e64f441c977f0448c7f25b0
SHA1f602272200986efc623b842122651737b336d586
SHA25659fd101c0e9b3cb7b09cf7f5e39840e999020d69e41b39c8a0cb662334504948
SHA512843ca845a8e2c1580304f6d8d8b51b659306baf276e794bd71bf05b71200f2f992a18dcc83b9cd819095ff213c619afbe1d10b9326c4471daadc378819170e65