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Analysis
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max time kernel
150s -
max time network
155s -
platform
windows10-2004_x64 -
resource
win10v2004-20240226-en -
resource tags
arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system -
submitted
07/04/2024, 00:07
Static task
static1
Behavioral task
behavioral1
Sample
a8011f951421b4d8c1868791b34aea83ac6829990c86893279afe371052f5876.exe
Resource
win7-20240220-en
Behavioral task
behavioral2
Sample
a8011f951421b4d8c1868791b34aea83ac6829990c86893279afe371052f5876.exe
Resource
win10v2004-20240226-en
General
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Target
a8011f951421b4d8c1868791b34aea83ac6829990c86893279afe371052f5876.exe
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Size
168KB
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MD5
90f61238cd0d1709ac80c24d2e7a87a1
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SHA1
f0c1a4cbbd0d69a85de7d7860ffc763d220756d5
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SHA256
a8011f951421b4d8c1868791b34aea83ac6829990c86893279afe371052f5876
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SHA512
13b9c41f67327840b8ca80a60015045e196e2f820e35e3082eefba9104f87b76624ded18e922bec6a6deb5ca2144afa87ffe8dd9824187597de3eeeb40c64699
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SSDEEP
1536:oVWy3/PPqPFzTGRfu+1niPRI7gIeTo88zQMihZOy+RMnmE7UkAEJZvhICqDojK9:hkPqPFzTGRfu67bNz2hT9nmEA19
Malware Config
Signatures
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Modifies visiblity of hidden/system files in Explorer 2 TTPs 2 IoCs
description ioc Process Set value (int) \REGISTRY\USER\S-1-5-21-513485977-2495024337-1260977654-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" a8011f951421b4d8c1868791b34aea83ac6829990c86893279afe371052f5876.exe Set value (int) \REGISTRY\USER\S-1-5-21-513485977-2495024337-1260977654-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" guoyob.exe -
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-1-5-21-513485977-2495024337-1260977654-1000\Control Panel\International\Geo\Nation a8011f951421b4d8c1868791b34aea83ac6829990c86893279afe371052f5876.exe -
Executes dropped EXE 1 IoCs
pid Process 644 guoyob.exe -
Adds Run key to start application 2 TTPs 27 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-513485977-2495024337-1260977654-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guoyob = "C:\\Users\\Admin\\guoyob.exe /k" guoyob.exe Set value (str) \REGISTRY\USER\S-1-5-21-513485977-2495024337-1260977654-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guoyob = "C:\\Users\\Admin\\guoyob.exe /e" guoyob.exe Set value (str) \REGISTRY\USER\S-1-5-21-513485977-2495024337-1260977654-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guoyob = "C:\\Users\\Admin\\guoyob.exe /j" guoyob.exe Set value (str) \REGISTRY\USER\S-1-5-21-513485977-2495024337-1260977654-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guoyob = "C:\\Users\\Admin\\guoyob.exe /w" guoyob.exe Set value (str) \REGISTRY\USER\S-1-5-21-513485977-2495024337-1260977654-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guoyob = "C:\\Users\\Admin\\guoyob.exe /y" guoyob.exe Set value (str) \REGISTRY\USER\S-1-5-21-513485977-2495024337-1260977654-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guoyob = "C:\\Users\\Admin\\guoyob.exe /r" guoyob.exe Set value (str) \REGISTRY\USER\S-1-5-21-513485977-2495024337-1260977654-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guoyob = "C:\\Users\\Admin\\guoyob.exe /t" guoyob.exe Set value (str) \REGISTRY\USER\S-1-5-21-513485977-2495024337-1260977654-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guoyob = "C:\\Users\\Admin\\guoyob.exe /s" guoyob.exe Set value (str) \REGISTRY\USER\S-1-5-21-513485977-2495024337-1260977654-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guoyob = "C:\\Users\\Admin\\guoyob.exe /x" guoyob.exe Set value (str) \REGISTRY\USER\S-1-5-21-513485977-2495024337-1260977654-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guoyob = "C:\\Users\\Admin\\guoyob.exe /h" a8011f951421b4d8c1868791b34aea83ac6829990c86893279afe371052f5876.exe Set value (str) \REGISTRY\USER\S-1-5-21-513485977-2495024337-1260977654-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guoyob = "C:\\Users\\Admin\\guoyob.exe /v" guoyob.exe Set value (str) \REGISTRY\USER\S-1-5-21-513485977-2495024337-1260977654-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guoyob = "C:\\Users\\Admin\\guoyob.exe /c" guoyob.exe Set value (str) \REGISTRY\USER\S-1-5-21-513485977-2495024337-1260977654-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guoyob = "C:\\Users\\Admin\\guoyob.exe /q" guoyob.exe Set value (str) \REGISTRY\USER\S-1-5-21-513485977-2495024337-1260977654-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guoyob = "C:\\Users\\Admin\\guoyob.exe /f" guoyob.exe Set value (str) \REGISTRY\USER\S-1-5-21-513485977-2495024337-1260977654-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guoyob = "C:\\Users\\Admin\\guoyob.exe /z" guoyob.exe Set value (str) \REGISTRY\USER\S-1-5-21-513485977-2495024337-1260977654-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guoyob = "C:\\Users\\Admin\\guoyob.exe /o" guoyob.exe Set value (str) \REGISTRY\USER\S-1-5-21-513485977-2495024337-1260977654-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guoyob = "C:\\Users\\Admin\\guoyob.exe /g" guoyob.exe Set value (str) \REGISTRY\USER\S-1-5-21-513485977-2495024337-1260977654-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guoyob = "C:\\Users\\Admin\\guoyob.exe /u" guoyob.exe Set value (str) \REGISTRY\USER\S-1-5-21-513485977-2495024337-1260977654-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guoyob = "C:\\Users\\Admin\\guoyob.exe /i" guoyob.exe Set value (str) \REGISTRY\USER\S-1-5-21-513485977-2495024337-1260977654-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guoyob = "C:\\Users\\Admin\\guoyob.exe /d" guoyob.exe Set value (str) \REGISTRY\USER\S-1-5-21-513485977-2495024337-1260977654-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guoyob = "C:\\Users\\Admin\\guoyob.exe /b" guoyob.exe Set value (str) \REGISTRY\USER\S-1-5-21-513485977-2495024337-1260977654-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guoyob = "C:\\Users\\Admin\\guoyob.exe /l" guoyob.exe Set value (str) \REGISTRY\USER\S-1-5-21-513485977-2495024337-1260977654-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guoyob = "C:\\Users\\Admin\\guoyob.exe /n" guoyob.exe Set value (str) \REGISTRY\USER\S-1-5-21-513485977-2495024337-1260977654-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guoyob = "C:\\Users\\Admin\\guoyob.exe /h" guoyob.exe Set value (str) \REGISTRY\USER\S-1-5-21-513485977-2495024337-1260977654-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guoyob = "C:\\Users\\Admin\\guoyob.exe /p" guoyob.exe Set value (str) \REGISTRY\USER\S-1-5-21-513485977-2495024337-1260977654-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guoyob = "C:\\Users\\Admin\\guoyob.exe /m" guoyob.exe Set value (str) \REGISTRY\USER\S-1-5-21-513485977-2495024337-1260977654-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guoyob = "C:\\Users\\Admin\\guoyob.exe /a" guoyob.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 4860 a8011f951421b4d8c1868791b34aea83ac6829990c86893279afe371052f5876.exe 4860 a8011f951421b4d8c1868791b34aea83ac6829990c86893279afe371052f5876.exe 644 guoyob.exe 644 guoyob.exe 644 guoyob.exe 644 guoyob.exe 644 guoyob.exe 644 guoyob.exe 644 guoyob.exe 644 guoyob.exe 644 guoyob.exe 644 guoyob.exe 644 guoyob.exe 644 guoyob.exe 644 guoyob.exe 644 guoyob.exe 644 guoyob.exe 644 guoyob.exe 644 guoyob.exe 644 guoyob.exe 644 guoyob.exe 644 guoyob.exe 644 guoyob.exe 644 guoyob.exe 644 guoyob.exe 644 guoyob.exe 644 guoyob.exe 644 guoyob.exe 644 guoyob.exe 644 guoyob.exe 644 guoyob.exe 644 guoyob.exe 644 guoyob.exe 644 guoyob.exe 644 guoyob.exe 644 guoyob.exe 644 guoyob.exe 644 guoyob.exe 644 guoyob.exe 644 guoyob.exe 644 guoyob.exe 644 guoyob.exe 644 guoyob.exe 644 guoyob.exe 644 guoyob.exe 644 guoyob.exe 644 guoyob.exe 644 guoyob.exe 644 guoyob.exe 644 guoyob.exe 644 guoyob.exe 644 guoyob.exe 644 guoyob.exe 644 guoyob.exe 644 guoyob.exe 644 guoyob.exe 644 guoyob.exe 644 guoyob.exe 644 guoyob.exe 644 guoyob.exe 644 guoyob.exe 644 guoyob.exe 644 guoyob.exe 644 guoyob.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 4860 a8011f951421b4d8c1868791b34aea83ac6829990c86893279afe371052f5876.exe 644 guoyob.exe -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 4860 wrote to memory of 644 4860 a8011f951421b4d8c1868791b34aea83ac6829990c86893279afe371052f5876.exe 92 PID 4860 wrote to memory of 644 4860 a8011f951421b4d8c1868791b34aea83ac6829990c86893279afe371052f5876.exe 92 PID 4860 wrote to memory of 644 4860 a8011f951421b4d8c1868791b34aea83ac6829990c86893279afe371052f5876.exe 92
Processes
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C:\Users\Admin\AppData\Local\Temp\a8011f951421b4d8c1868791b34aea83ac6829990c86893279afe371052f5876.exe"C:\Users\Admin\AppData\Local\Temp\a8011f951421b4d8c1868791b34aea83ac6829990c86893279afe371052f5876.exe"1⤵
- Modifies visiblity of hidden/system files in Explorer
- Checks computer location settings
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4860 -
C:\Users\Admin\guoyob.exe"C:\Users\Admin\guoyob.exe"2⤵
- Modifies visiblity of hidden/system files in Explorer
- Executes dropped EXE
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
PID:644
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
168KB
MD5a2eec86419dbcd39d2676639b3553028
SHA1a51fd5eae0a0939dda9d7420cedf01664b8cd342
SHA256fe02d5dbc95231456a750954d17c0f34fa9f6a03f2ee46cfddfe4eb5eb8ee087
SHA512f85083f821cac57c24303093a6e6accb25837e4c00bdca7769927b05d40cebdf89889f39e28356720271dcc4fefd92068e4b3bad852cfce472f64ebfd9a3a9be