Analysis
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max time kernel
169s -
max time network
166s -
platform
windows10-2004_x64 -
resource
win10v2004-20220812-en -
resource tags
arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system -
submitted
29/10/2022, 23:56
Static task
static1
Behavioral task
behavioral1
Sample
cd8c0229647b86fda13766469deb991680a8e5df4aec568611b42c98789b694f.exe
Resource
win7-20220812-en
windows7-x64
8 signatures
150 seconds
Behavioral task
behavioral2
Sample
cd8c0229647b86fda13766469deb991680a8e5df4aec568611b42c98789b694f.exe
Resource
win10v2004-20220812-en
windows10-2004-x64
9 signatures
150 seconds
General
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Target
cd8c0229647b86fda13766469deb991680a8e5df4aec568611b42c98789b694f.exe
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Size
272KB
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MD5
93cbb925854d8988846bcd9d99c79310
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SHA1
4c4eb6947dc113ba4738727e6cd054a6478c2a58
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SHA256
cd8c0229647b86fda13766469deb991680a8e5df4aec568611b42c98789b694f
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SHA512
76f474a4f82e4bab5c11bb8f3daa387103abc8dc9755428056a72e05933dc009bacdd706f0a68efcd05f3f20f01d0ce92929232170a1737ec6af069f7c15ef8c
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SSDEEP
3072:6jsoTNg91R0FvbVJznCRcy/hqF69MSs/PLLK+ammU3YwgTeA32t:fGS8fznHC39G/PLLKU3YwgT
Score
10/10
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-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" cd8c0229647b86fda13766469deb991680a8e5df4aec568611b42c98789b694f.exe Set value (int) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" yeavui.exe -
Executes dropped EXE 1 IoCs
pid Process 4448 yeavui.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-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation cd8c0229647b86fda13766469deb991680a8e5df4aec568611b42c98789b694f.exe -
Adds Run key to start application 2 TTPs 29 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yeavui = "C:\\Users\\Admin\\yeavui.exe /r" yeavui.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yeavui = "C:\\Users\\Admin\\yeavui.exe /l" yeavui.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yeavui = "C:\\Users\\Admin\\yeavui.exe /y" yeavui.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yeavui = "C:\\Users\\Admin\\yeavui.exe /e" yeavui.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yeavui = "C:\\Users\\Admin\\yeavui.exe /i" yeavui.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yeavui = "C:\\Users\\Admin\\yeavui.exe /n" yeavui.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yeavui = "C:\\Users\\Admin\\yeavui.exe /f" yeavui.exe Key created \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Windows\CurrentVersion\Run\ yeavui.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yeavui = "C:\\Users\\Admin\\yeavui.exe /b" yeavui.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yeavui = "C:\\Users\\Admin\\yeavui.exe /h" yeavui.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yeavui = "C:\\Users\\Admin\\yeavui.exe /g" yeavui.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yeavui = "C:\\Users\\Admin\\yeavui.exe /s" yeavui.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yeavui = "C:\\Users\\Admin\\yeavui.exe /x" yeavui.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yeavui = "C:\\Users\\Admin\\yeavui.exe /c" yeavui.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yeavui = "C:\\Users\\Admin\\yeavui.exe /u" yeavui.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yeavui = "C:\\Users\\Admin\\yeavui.exe /q" yeavui.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yeavui = "C:\\Users\\Admin\\yeavui.exe /j" yeavui.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yeavui = "C:\\Users\\Admin\\yeavui.exe /m" yeavui.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yeavui = "C:\\Users\\Admin\\yeavui.exe /p" yeavui.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yeavui = "C:\\Users\\Admin\\yeavui.exe /v" yeavui.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yeavui = "C:\\Users\\Admin\\yeavui.exe /k" yeavui.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yeavui = "C:\\Users\\Admin\\yeavui.exe /d" yeavui.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yeavui = "C:\\Users\\Admin\\yeavui.exe /w" yeavui.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yeavui = "C:\\Users\\Admin\\yeavui.exe /z" yeavui.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yeavui = "C:\\Users\\Admin\\yeavui.exe /t" yeavui.exe Key created \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Windows\CurrentVersion\Run\ cd8c0229647b86fda13766469deb991680a8e5df4aec568611b42c98789b694f.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yeavui = "C:\\Users\\Admin\\yeavui.exe /w" cd8c0229647b86fda13766469deb991680a8e5df4aec568611b42c98789b694f.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yeavui = "C:\\Users\\Admin\\yeavui.exe /a" yeavui.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yeavui = "C:\\Users\\Admin\\yeavui.exe /o" yeavui.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Modifies registry class 1 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000_Classes\Local Settings cd8c0229647b86fda13766469deb991680a8e5df4aec568611b42c98789b694f.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 1080 cd8c0229647b86fda13766469deb991680a8e5df4aec568611b42c98789b694f.exe 1080 cd8c0229647b86fda13766469deb991680a8e5df4aec568611b42c98789b694f.exe 4448 yeavui.exe 4448 yeavui.exe 4448 yeavui.exe 4448 yeavui.exe 4448 yeavui.exe 4448 yeavui.exe 4448 yeavui.exe 4448 yeavui.exe 4448 yeavui.exe 4448 yeavui.exe 4448 yeavui.exe 4448 yeavui.exe 4448 yeavui.exe 4448 yeavui.exe 4448 yeavui.exe 4448 yeavui.exe 4448 yeavui.exe 4448 yeavui.exe 4448 yeavui.exe 4448 yeavui.exe 4448 yeavui.exe 4448 yeavui.exe 4448 yeavui.exe 4448 yeavui.exe 4448 yeavui.exe 4448 yeavui.exe 4448 yeavui.exe 4448 yeavui.exe 4448 yeavui.exe 4448 yeavui.exe 4448 yeavui.exe 4448 yeavui.exe 4448 yeavui.exe 4448 yeavui.exe 4448 yeavui.exe 4448 yeavui.exe 4448 yeavui.exe 4448 yeavui.exe 4448 yeavui.exe 4448 yeavui.exe 4448 yeavui.exe 4448 yeavui.exe 4448 yeavui.exe 4448 yeavui.exe 4448 yeavui.exe 4448 yeavui.exe 4448 yeavui.exe 4448 yeavui.exe 4448 yeavui.exe 4448 yeavui.exe 4448 yeavui.exe 4448 yeavui.exe 4448 yeavui.exe 4448 yeavui.exe 4448 yeavui.exe 4448 yeavui.exe 4448 yeavui.exe 4448 yeavui.exe 4448 yeavui.exe 4448 yeavui.exe 4448 yeavui.exe 4448 yeavui.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 1080 cd8c0229647b86fda13766469deb991680a8e5df4aec568611b42c98789b694f.exe 4448 yeavui.exe -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 1080 wrote to memory of 4448 1080 cd8c0229647b86fda13766469deb991680a8e5df4aec568611b42c98789b694f.exe 83 PID 1080 wrote to memory of 4448 1080 cd8c0229647b86fda13766469deb991680a8e5df4aec568611b42c98789b694f.exe 83 PID 1080 wrote to memory of 4448 1080 cd8c0229647b86fda13766469deb991680a8e5df4aec568611b42c98789b694f.exe 83
Processes
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C:\Users\Admin\AppData\Local\Temp\cd8c0229647b86fda13766469deb991680a8e5df4aec568611b42c98789b694f.exe"C:\Users\Admin\AppData\Local\Temp\cd8c0229647b86fda13766469deb991680a8e5df4aec568611b42c98789b694f.exe"1⤵
- Modifies visiblity of hidden/system files in Explorer
- Checks computer location settings
- Adds Run key to start application
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1080 -
C:\Users\Admin\yeavui.exe"C:\Users\Admin\yeavui.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:4448
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C:\Windows\System32\rundll32.exeC:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding1⤵PID:1860
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
272KB
MD593cbb925854d8988846bcd9d99c79310
SHA14c4eb6947dc113ba4738727e6cd054a6478c2a58
SHA256cd8c0229647b86fda13766469deb991680a8e5df4aec568611b42c98789b694f
SHA51276f474a4f82e4bab5c11bb8f3daa387103abc8dc9755428056a72e05933dc009bacdd706f0a68efcd05f3f20f01d0ce92929232170a1737ec6af069f7c15ef8c
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Filesize
272KB
MD593cbb925854d8988846bcd9d99c79310
SHA14c4eb6947dc113ba4738727e6cd054a6478c2a58
SHA256cd8c0229647b86fda13766469deb991680a8e5df4aec568611b42c98789b694f
SHA51276f474a4f82e4bab5c11bb8f3daa387103abc8dc9755428056a72e05933dc009bacdd706f0a68efcd05f3f20f01d0ce92929232170a1737ec6af069f7c15ef8c