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Analysis
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max time kernel
170s -
max time network
192s -
platform
windows10-2004_x64 -
resource
win10v2004-20220812-en -
resource tags
arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system -
submitted
05/12/2022, 22:52
Static task
static1
Behavioral task
behavioral1
Sample
b5561fa02779219e6105dac908090cc541abcacd61fb9ecedcf7909ab2fe0745.exe
Resource
win7-20220812-en
windows7-x64
8 signatures
150 seconds
Behavioral task
behavioral2
Sample
b5561fa02779219e6105dac908090cc541abcacd61fb9ecedcf7909ab2fe0745.exe
Resource
win10v2004-20220812-en
windows10-2004-x64
8 signatures
150 seconds
General
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Target
b5561fa02779219e6105dac908090cc541abcacd61fb9ecedcf7909ab2fe0745.exe
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Size
240KB
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MD5
79515c3a10a780585e845cc58adb30f6
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SHA1
7aeb539ce6a22a5bf58a4c880e28c3061dd2a589
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SHA256
b5561fa02779219e6105dac908090cc541abcacd61fb9ecedcf7909ab2fe0745
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SHA512
846cf1447c94188f68efb0a78db0db34ad06464cb0212b6577e3e9f0849eb738b65dd42ef9de7acd4c584e9df3e41160ac12a304d91cf9bee11f1ba1d5885c3d
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SSDEEP
6144:Eq43dwqsNTNEXGlQRayEqxF6snji81RUinKq3aEEDliDfi:EtdQKj3aEEwe
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" b5561fa02779219e6105dac908090cc541abcacd61fb9ecedcf7909ab2fe0745.exe Set value (int) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" gauvaz.exe -
Executes dropped EXE 1 IoCs
pid Process 4960 gauvaz.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 b5561fa02779219e6105dac908090cc541abcacd61fb9ecedcf7909ab2fe0745.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\gauvaz = "C:\\Users\\Admin\\gauvaz.exe /a" gauvaz.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\gauvaz = "C:\\Users\\Admin\\gauvaz.exe /i" gauvaz.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\gauvaz = "C:\\Users\\Admin\\gauvaz.exe /u" gauvaz.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\gauvaz = "C:\\Users\\Admin\\gauvaz.exe /e" gauvaz.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\gauvaz = "C:\\Users\\Admin\\gauvaz.exe /t" gauvaz.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\gauvaz = "C:\\Users\\Admin\\gauvaz.exe /b" gauvaz.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\gauvaz = "C:\\Users\\Admin\\gauvaz.exe /c" gauvaz.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\gauvaz = "C:\\Users\\Admin\\gauvaz.exe /l" gauvaz.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\gauvaz = "C:\\Users\\Admin\\gauvaz.exe /r" gauvaz.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\gauvaz = "C:\\Users\\Admin\\gauvaz.exe /h" gauvaz.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\gauvaz = "C:\\Users\\Admin\\gauvaz.exe /f" gauvaz.exe Key created \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Windows\CurrentVersion\Run\ gauvaz.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\gauvaz = "C:\\Users\\Admin\\gauvaz.exe /d" gauvaz.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\gauvaz = "C:\\Users\\Admin\\gauvaz.exe /y" gauvaz.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\gauvaz = "C:\\Users\\Admin\\gauvaz.exe /m" gauvaz.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\gauvaz = "C:\\Users\\Admin\\gauvaz.exe /s" gauvaz.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\gauvaz = "C:\\Users\\Admin\\gauvaz.exe /z" b5561fa02779219e6105dac908090cc541abcacd61fb9ecedcf7909ab2fe0745.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\gauvaz = "C:\\Users\\Admin\\gauvaz.exe /k" gauvaz.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\gauvaz = "C:\\Users\\Admin\\gauvaz.exe /n" gauvaz.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\gauvaz = "C:\\Users\\Admin\\gauvaz.exe /q" gauvaz.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\gauvaz = "C:\\Users\\Admin\\gauvaz.exe /z" gauvaz.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\gauvaz = "C:\\Users\\Admin\\gauvaz.exe /x" gauvaz.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\gauvaz = "C:\\Users\\Admin\\gauvaz.exe /j" gauvaz.exe Key created \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Windows\CurrentVersion\Run\ b5561fa02779219e6105dac908090cc541abcacd61fb9ecedcf7909ab2fe0745.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\gauvaz = "C:\\Users\\Admin\\gauvaz.exe /w" gauvaz.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\gauvaz = "C:\\Users\\Admin\\gauvaz.exe /g" gauvaz.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\gauvaz = "C:\\Users\\Admin\\gauvaz.exe /o" gauvaz.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\gauvaz = "C:\\Users\\Admin\\gauvaz.exe /p" gauvaz.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\gauvaz = "C:\\Users\\Admin\\gauvaz.exe /v" gauvaz.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 1988 b5561fa02779219e6105dac908090cc541abcacd61fb9ecedcf7909ab2fe0745.exe 1988 b5561fa02779219e6105dac908090cc541abcacd61fb9ecedcf7909ab2fe0745.exe 4960 gauvaz.exe 4960 gauvaz.exe 4960 gauvaz.exe 4960 gauvaz.exe 4960 gauvaz.exe 4960 gauvaz.exe 4960 gauvaz.exe 4960 gauvaz.exe 4960 gauvaz.exe 4960 gauvaz.exe 4960 gauvaz.exe 4960 gauvaz.exe 4960 gauvaz.exe 4960 gauvaz.exe 4960 gauvaz.exe 4960 gauvaz.exe 4960 gauvaz.exe 4960 gauvaz.exe 4960 gauvaz.exe 4960 gauvaz.exe 4960 gauvaz.exe 4960 gauvaz.exe 4960 gauvaz.exe 4960 gauvaz.exe 4960 gauvaz.exe 4960 gauvaz.exe 4960 gauvaz.exe 4960 gauvaz.exe 4960 gauvaz.exe 4960 gauvaz.exe 4960 gauvaz.exe 4960 gauvaz.exe 4960 gauvaz.exe 4960 gauvaz.exe 4960 gauvaz.exe 4960 gauvaz.exe 4960 gauvaz.exe 4960 gauvaz.exe 4960 gauvaz.exe 4960 gauvaz.exe 4960 gauvaz.exe 4960 gauvaz.exe 4960 gauvaz.exe 4960 gauvaz.exe 4960 gauvaz.exe 4960 gauvaz.exe 4960 gauvaz.exe 4960 gauvaz.exe 4960 gauvaz.exe 4960 gauvaz.exe 4960 gauvaz.exe 4960 gauvaz.exe 4960 gauvaz.exe 4960 gauvaz.exe 4960 gauvaz.exe 4960 gauvaz.exe 4960 gauvaz.exe 4960 gauvaz.exe 4960 gauvaz.exe 4960 gauvaz.exe 4960 gauvaz.exe 4960 gauvaz.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 1988 b5561fa02779219e6105dac908090cc541abcacd61fb9ecedcf7909ab2fe0745.exe 4960 gauvaz.exe -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 1988 wrote to memory of 4960 1988 b5561fa02779219e6105dac908090cc541abcacd61fb9ecedcf7909ab2fe0745.exe 79 PID 1988 wrote to memory of 4960 1988 b5561fa02779219e6105dac908090cc541abcacd61fb9ecedcf7909ab2fe0745.exe 79 PID 1988 wrote to memory of 4960 1988 b5561fa02779219e6105dac908090cc541abcacd61fb9ecedcf7909ab2fe0745.exe 79
Processes
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C:\Users\Admin\AppData\Local\Temp\b5561fa02779219e6105dac908090cc541abcacd61fb9ecedcf7909ab2fe0745.exe"C:\Users\Admin\AppData\Local\Temp\b5561fa02779219e6105dac908090cc541abcacd61fb9ecedcf7909ab2fe0745.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:1988 -
C:\Users\Admin\gauvaz.exe"C:\Users\Admin\gauvaz.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:4960
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
240KB
MD552124a0869e0e98df6edd21aafc2d05b
SHA153c1925e97a013298374dffeb9ba40da1174c890
SHA2563ee305c5791b47eaa8ba6efb0faa160d315af0f5c623cc8aee1068983c32f51b
SHA512f32bad189274fd19a4eededb5a803ecb0aa50e812395afa580b8c198ba7da1a1eb7f676f29125328216e37ea3a1ad3f06f45387b8e8fd9977779ccbcb886368d
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Filesize
240KB
MD552124a0869e0e98df6edd21aafc2d05b
SHA153c1925e97a013298374dffeb9ba40da1174c890
SHA2563ee305c5791b47eaa8ba6efb0faa160d315af0f5c623cc8aee1068983c32f51b
SHA512f32bad189274fd19a4eededb5a803ecb0aa50e812395afa580b8c198ba7da1a1eb7f676f29125328216e37ea3a1ad3f06f45387b8e8fd9977779ccbcb886368d