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Analysis
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max time kernel
150s -
max time network
139s -
platform
windows10-2004_x64 -
resource
win10v2004-20220812-en -
resource tags
arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system -
submitted
02/10/2022, 00:04
Static task
static1
Behavioral task
behavioral1
Sample
bf3b8dd2e537753481118332440da4ae8d07f8da0f99809486a8da82a4312501.exe
Resource
win7-20220812-en
windows7-x64
8 signatures
150 seconds
Behavioral task
behavioral2
Sample
bf3b8dd2e537753481118332440da4ae8d07f8da0f99809486a8da82a4312501.exe
Resource
win10v2004-20220812-en
windows10-2004-x64
8 signatures
150 seconds
General
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Target
bf3b8dd2e537753481118332440da4ae8d07f8da0f99809486a8da82a4312501.exe
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Size
232KB
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MD5
63462bdc5731c41e3ca9f43dc746a0d1
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SHA1
2b319e955be645fd8f53b3c180a409207eedcfad
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SHA256
bf3b8dd2e537753481118332440da4ae8d07f8da0f99809486a8da82a4312501
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SHA512
e9099671754941259e6f7d886407a6293088c75d52c1dec3b32e29a5114d5c9687bef3b3b53fe7e1e920a1ab285b6fc25dbbfa56286d257641c1c626a5892a9d
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SSDEEP
3072:o/XVlhzmlvIirAvyMZe0EVv64pWCyiHCXV/u0h:zzOyMwTVv62WCyiHCXV/u0
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-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" bf3b8dd2e537753481118332440da4ae8d07f8da0f99809486a8da82a4312501.exe Set value (int) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" wiegauf.exe -
Executes dropped EXE 1 IoCs
pid Process 3500 wiegauf.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-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation bf3b8dd2e537753481118332440da4ae8d07f8da0f99809486a8da82a4312501.exe -
Adds Run key to start application 2 TTPs 29 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\wiegauf = "C:\\Users\\Admin\\wiegauf.exe /o" wiegauf.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\wiegauf = "C:\\Users\\Admin\\wiegauf.exe /c" wiegauf.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\wiegauf = "C:\\Users\\Admin\\wiegauf.exe /f" wiegauf.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\wiegauf = "C:\\Users\\Admin\\wiegauf.exe /b" wiegauf.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\wiegauf = "C:\\Users\\Admin\\wiegauf.exe /s" wiegauf.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\wiegauf = "C:\\Users\\Admin\\wiegauf.exe /v" wiegauf.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\wiegauf = "C:\\Users\\Admin\\wiegauf.exe /w" wiegauf.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\wiegauf = "C:\\Users\\Admin\\wiegauf.exe /p" wiegauf.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\wiegauf = "C:\\Users\\Admin\\wiegauf.exe /h" wiegauf.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\wiegauf = "C:\\Users\\Admin\\wiegauf.exe /t" wiegauf.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\wiegauf = "C:\\Users\\Admin\\wiegauf.exe /x" wiegauf.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\wiegauf = "C:\\Users\\Admin\\wiegauf.exe /n" wiegauf.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\wiegauf = "C:\\Users\\Admin\\wiegauf.exe /i" wiegauf.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\wiegauf = "C:\\Users\\Admin\\wiegauf.exe /m" wiegauf.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\wiegauf = "C:\\Users\\Admin\\wiegauf.exe /l" wiegauf.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\wiegauf = "C:\\Users\\Admin\\wiegauf.exe /g" wiegauf.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\wiegauf = "C:\\Users\\Admin\\wiegauf.exe /z" wiegauf.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\wiegauf = "C:\\Users\\Admin\\wiegauf.exe /j" wiegauf.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\wiegauf = "C:\\Users\\Admin\\wiegauf.exe /q" wiegauf.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\wiegauf = "C:\\Users\\Admin\\wiegauf.exe /b" bf3b8dd2e537753481118332440da4ae8d07f8da0f99809486a8da82a4312501.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\wiegauf = "C:\\Users\\Admin\\wiegauf.exe /e" wiegauf.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\wiegauf = "C:\\Users\\Admin\\wiegauf.exe /k" wiegauf.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\wiegauf = "C:\\Users\\Admin\\wiegauf.exe /d" wiegauf.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\wiegauf = "C:\\Users\\Admin\\wiegauf.exe /u" wiegauf.exe Key created \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Windows\CurrentVersion\Run\ wiegauf.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\wiegauf = "C:\\Users\\Admin\\wiegauf.exe /a" wiegauf.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\wiegauf = "C:\\Users\\Admin\\wiegauf.exe /r" wiegauf.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\wiegauf = "C:\\Users\\Admin\\wiegauf.exe /y" wiegauf.exe Key created \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Windows\CurrentVersion\Run\ bf3b8dd2e537753481118332440da4ae8d07f8da0f99809486a8da82a4312501.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 2564 bf3b8dd2e537753481118332440da4ae8d07f8da0f99809486a8da82a4312501.exe 2564 bf3b8dd2e537753481118332440da4ae8d07f8da0f99809486a8da82a4312501.exe 3500 wiegauf.exe 3500 wiegauf.exe 3500 wiegauf.exe 3500 wiegauf.exe 3500 wiegauf.exe 3500 wiegauf.exe 3500 wiegauf.exe 3500 wiegauf.exe 3500 wiegauf.exe 3500 wiegauf.exe 3500 wiegauf.exe 3500 wiegauf.exe 3500 wiegauf.exe 3500 wiegauf.exe 3500 wiegauf.exe 3500 wiegauf.exe 3500 wiegauf.exe 3500 wiegauf.exe 3500 wiegauf.exe 3500 wiegauf.exe 3500 wiegauf.exe 3500 wiegauf.exe 3500 wiegauf.exe 3500 wiegauf.exe 3500 wiegauf.exe 3500 wiegauf.exe 3500 wiegauf.exe 3500 wiegauf.exe 3500 wiegauf.exe 3500 wiegauf.exe 3500 wiegauf.exe 3500 wiegauf.exe 3500 wiegauf.exe 3500 wiegauf.exe 3500 wiegauf.exe 3500 wiegauf.exe 3500 wiegauf.exe 3500 wiegauf.exe 3500 wiegauf.exe 3500 wiegauf.exe 3500 wiegauf.exe 3500 wiegauf.exe 3500 wiegauf.exe 3500 wiegauf.exe 3500 wiegauf.exe 3500 wiegauf.exe 3500 wiegauf.exe 3500 wiegauf.exe 3500 wiegauf.exe 3500 wiegauf.exe 3500 wiegauf.exe 3500 wiegauf.exe 3500 wiegauf.exe 3500 wiegauf.exe 3500 wiegauf.exe 3500 wiegauf.exe 3500 wiegauf.exe 3500 wiegauf.exe 3500 wiegauf.exe 3500 wiegauf.exe 3500 wiegauf.exe 3500 wiegauf.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 2564 bf3b8dd2e537753481118332440da4ae8d07f8da0f99809486a8da82a4312501.exe 3500 wiegauf.exe -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 2564 wrote to memory of 3500 2564 bf3b8dd2e537753481118332440da4ae8d07f8da0f99809486a8da82a4312501.exe 79 PID 2564 wrote to memory of 3500 2564 bf3b8dd2e537753481118332440da4ae8d07f8da0f99809486a8da82a4312501.exe 79 PID 2564 wrote to memory of 3500 2564 bf3b8dd2e537753481118332440da4ae8d07f8da0f99809486a8da82a4312501.exe 79
Processes
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C:\Users\Admin\AppData\Local\Temp\bf3b8dd2e537753481118332440da4ae8d07f8da0f99809486a8da82a4312501.exe"C:\Users\Admin\AppData\Local\Temp\bf3b8dd2e537753481118332440da4ae8d07f8da0f99809486a8da82a4312501.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:2564 -
C:\Users\Admin\wiegauf.exe"C:\Users\Admin\wiegauf.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:3500
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
232KB
MD5c0a83536e3e71ac8e6b2ad55192d3748
SHA1faa8c88ad52aba71d58e319ebf23ae41c7b68c88
SHA256899f04405c1dd0db07c5b95c075d191f92792c2030064fdc2948bacde52a1070
SHA5123678346835803aeea4a671599836a30ac815903a2a19d592c314d864c15d7c3b71a155eb7684b00dbb6d12a39e44521311e20763af60a939bd24f6089e0feff3
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Filesize
232KB
MD5c0a83536e3e71ac8e6b2ad55192d3748
SHA1faa8c88ad52aba71d58e319ebf23ae41c7b68c88
SHA256899f04405c1dd0db07c5b95c075d191f92792c2030064fdc2948bacde52a1070
SHA5123678346835803aeea4a671599836a30ac815903a2a19d592c314d864c15d7c3b71a155eb7684b00dbb6d12a39e44521311e20763af60a939bd24f6089e0feff3