Analysis
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max time kernel
140s -
max time network
153s -
platform
windows7_x64 -
resource
win7-20231215-en -
resource tags
arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system -
submitted
30/12/2023, 08:31
Behavioral task
behavioral1
Sample
137d2e70a06b6f4b313b323c7be617b3.exe
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
137d2e70a06b6f4b313b323c7be617b3.exe
Resource
win10v2004-20231215-en
General
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Target
137d2e70a06b6f4b313b323c7be617b3.exe
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Size
50KB
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MD5
137d2e70a06b6f4b313b323c7be617b3
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SHA1
22f4ecf5cba50554812e9847551f5c0c82e5ff6d
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SHA256
461b31224c1ec35c9577cf09c82dce5689fd58f087c1e687d3937c643693aea9
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SHA512
44b0876ee5f75f2ee0821693876dd6595793088e4dc385c8f054cc7a022f4cf1a146bc9dfa70702db9ce726760ba093d81462c5ee7f8d0685fd315ada89d2cf5
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SSDEEP
1536:3nQ5F+U+337lxJpKE5gJLcxB3pwEidGkq5:3Q5kU+Zpz54wtOEmNq5
Malware Config
Signatures
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Checks BIOS information in registry 2 TTPs 1 IoCs
BIOS information is often read in order to detect sandboxing environments.
description ioc Process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosdate svchost.exe -
resource yara_rule behavioral1/memory/2212-0-0x0000000000400000-0x0000000000434000-memory.dmp upx -
Adds Run key to start application 2 TTPs 2 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\aaaaaaaa = "C:\\Windows\\System32\\aaaaaaaa.exe" 137d2e70a06b6f4b313b323c7be617b3.exe Set value (str) \REGISTRY\USER\S-1-5-21-1603059206-2004189698-4139800220-1000\Software\Microsoft\Windows\CurrentVersion\Run\aaaaaaaa = "C:\\Users\\Admin\\aaaaaaaa.exe" 137d2e70a06b6f4b313b323c7be617b3.exe -
Drops file in System32 directory 1 IoCs
description ioc Process File created C:\Windows\SysWOW64\aaaaaaaa.exe 137d2e70a06b6f4b313b323c7be617b3.exe -
Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 2212 set thread context of 2676 2212 137d2e70a06b6f4b313b323c7be617b3.exe 15 -
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 svchost.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier svchost.exe -
Enumerates system info in registry 2 TTPs 1 IoCs
description ioc Process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosDate svchost.exe -
Suspicious use of WriteProcessMemory 9 IoCs
description pid Process procid_target PID 2212 wrote to memory of 2676 2212 137d2e70a06b6f4b313b323c7be617b3.exe 15 PID 2212 wrote to memory of 2676 2212 137d2e70a06b6f4b313b323c7be617b3.exe 15 PID 2212 wrote to memory of 2676 2212 137d2e70a06b6f4b313b323c7be617b3.exe 15 PID 2212 wrote to memory of 2676 2212 137d2e70a06b6f4b313b323c7be617b3.exe 15 PID 2212 wrote to memory of 2676 2212 137d2e70a06b6f4b313b323c7be617b3.exe 15 PID 2212 wrote to memory of 2676 2212 137d2e70a06b6f4b313b323c7be617b3.exe 15 PID 2212 wrote to memory of 2676 2212 137d2e70a06b6f4b313b323c7be617b3.exe 15 PID 2212 wrote to memory of 2676 2212 137d2e70a06b6f4b313b323c7be617b3.exe 15 PID 2212 wrote to memory of 2676 2212 137d2e70a06b6f4b313b323c7be617b3.exe 15
Processes
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C:\Users\Admin\AppData\Local\Temp\137d2e70a06b6f4b313b323c7be617b3.exe"C:\Users\Admin\AppData\Local\Temp\137d2e70a06b6f4b313b323c7be617b3.exe"1⤵
- Adds Run key to start application
- Drops file in System32 directory
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2212 -
C:\Windows\SysWOW64\svchost.exeC:\Windows\System32\svchost.exe2⤵
- Checks BIOS information in registry
- Checks processor information in registry
- Enumerates system info in registry
PID:2676
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