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Analysis
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max time kernel
99s -
max time network
101s -
platform
windows10-2004_x64 -
resource
win10v2004-20240802-en -
resource tags
arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system -
submitted
18/08/2024, 09:55
Behavioral task
behavioral1
Sample
4188e6b9061061d946909946d81d0c10N.exe
Resource
win7-20240704-en
Behavioral task
behavioral2
Sample
4188e6b9061061d946909946d81d0c10N.exe
Resource
win10v2004-20240802-en
General
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Target
4188e6b9061061d946909946d81d0c10N.exe
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Size
135KB
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MD5
4188e6b9061061d946909946d81d0c10
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SHA1
05c8bee2af630442b51aa2d1938ffa464ca234b2
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SHA256
3d79d0b0fcaa165200205faf9a9fc8858e51072f8c9c7f4ac3aecc74c1c48167
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SHA512
3b31a54e22540ef841e35c8ac5d74b8f564fe0fddfae5413989df260ee443c45ad9598c4f5c6cb6f27740bddb1ff4573f10b535015eb121bbb274dbdb9b87aca
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SSDEEP
1536:YGYU/W2/HG6QMauSV3ixJHABLrmhH7i9eNOOg00GqMIK7aGZh3SOv:YfU/WF6QMauSuiWNi9eNOl0007NZIOv
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-1-5-21-2412658365-3084825385-3340777666-1000\Control Panel\International\Geo\Nation 4188e6b9061061d946909946d81d0c10N.exe -
Executes dropped EXE 1 IoCs
pid Process 1784 wuauclt.exe -
resource yara_rule behavioral2/memory/3264-0-0x0000000000760000-0x0000000000788000-memory.dmp upx behavioral2/files/0x0007000000023469-3.dat upx behavioral2/memory/1784-4-0x0000000000CF0000-0x0000000000D18000-memory.dmp upx behavioral2/memory/3264-6-0x0000000000760000-0x0000000000788000-memory.dmp upx behavioral2/memory/1784-7-0x0000000000CF0000-0x0000000000D18000-memory.dmp upx behavioral2/memory/3264-8-0x0000000000760000-0x0000000000788000-memory.dmp upx -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Window Update = "\"C:\\ProgramData\\Update\\wuauclt.exe\" /run" 4188e6b9061061d946909946d81d0c10N.exe -
Indicator Removal: File Deletion 1 TTPs
Adversaries may delete files left behind by the actions of their intrusion activity.
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Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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System Location Discovery: System Language Discovery 1 TTPs 3 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 4188e6b9061061d946909946d81d0c10N.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language wuauclt.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language cmd.exe -
Suspicious use of WriteProcessMemory 6 IoCs
description pid Process procid_target PID 3264 wrote to memory of 1784 3264 4188e6b9061061d946909946d81d0c10N.exe 84 PID 3264 wrote to memory of 1784 3264 4188e6b9061061d946909946d81d0c10N.exe 84 PID 3264 wrote to memory of 1784 3264 4188e6b9061061d946909946d81d0c10N.exe 84 PID 3264 wrote to memory of 3132 3264 4188e6b9061061d946909946d81d0c10N.exe 100 PID 3264 wrote to memory of 3132 3264 4188e6b9061061d946909946d81d0c10N.exe 100 PID 3264 wrote to memory of 3132 3264 4188e6b9061061d946909946d81d0c10N.exe 100
Processes
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C:\Users\Admin\AppData\Local\Temp\4188e6b9061061d946909946d81d0c10N.exe"C:\Users\Admin\AppData\Local\Temp\4188e6b9061061d946909946d81d0c10N.exe"1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3264 -
C:\ProgramData\Update\wuauclt.exe"C:\ProgramData\Update\wuauclt.exe" /run2⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:1784
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C:\windows\SysWOW64\cmd.exe"C:\windows\system32\cmd.exe" /c del /q "C:\Users\Admin\AppData\Local\Temp\4188e6b9061061d946909946d81d0c10N.exe" >> NUL2⤵
- System Location Discovery: System Language Discovery
PID:3132
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
135KB
MD59a43a1b1bd3eee4fa469fbf2b132277e
SHA111bc285a35b966eee3207b072b86b6c3f6f20ef2
SHA256ab683027ac2783b7154ddf4fc113ec166a95478bacd41119056f5e04813b5ead
SHA512b144520a54dfeab881d39814218c2a2fbe4833742ce8b2551db50d3c60ba634e05902f208dcc84cd965f70a5d2055dc3894f61aaeeaac58f86f982299ff67695