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Analysis
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max time kernel
151s -
max time network
151s -
platform
windows10-2004_x64 -
resource
win10v2004-20220812-en -
resource tags
arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system -
submitted
30/10/2022, 19:58
Static task
static1
Behavioral task
behavioral1
Sample
e89f645c02976bf9c8b55c0352428fd705bea6fc27fbe60fb228f081c88ea162.exe
Resource
win7-20220812-en
windows7-x64
9 signatures
150 seconds
Behavioral task
behavioral2
Sample
e89f645c02976bf9c8b55c0352428fd705bea6fc27fbe60fb228f081c88ea162.exe
Resource
win10v2004-20220812-en
windows10-2004-x64
9 signatures
150 seconds
General
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Target
e89f645c02976bf9c8b55c0352428fd705bea6fc27fbe60fb228f081c88ea162.exe
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Size
172KB
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MD5
82ab09f111fa3867fcd58cb975744005
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SHA1
9d4199c65253aa3cb541d0679d124f30c1fbb45f
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SHA256
e89f645c02976bf9c8b55c0352428fd705bea6fc27fbe60fb228f081c88ea162
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SHA512
4f964db27b672f7a498b207ca0e38693e66c356f02abb535ec65b9b5d273349297c958f430f25ac8ce21974ac7a5eba487d377239443ffebec9e20599ff6e3d7
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SSDEEP
3072:kChDLsNgqd3muDOqkVfbX936NDoZq4rvKyGXi:7DLsNgo3muDOqkpbX937Zq4ryi
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" e89f645c02976bf9c8b55c0352428fd705bea6fc27fbe60fb228f081c88ea162.exe Set value (int) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" smruk.exe -
Executes dropped EXE 1 IoCs
pid Process 536 smruk.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 e89f645c02976bf9c8b55c0352428fd705bea6fc27fbe60fb228f081c88ea162.exe -
Adds Run key to start application 2 TTPs 58 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\smruk = "C:\\Users\\Admin\\smruk.exe /l" smruk.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\smruk = "C:\\Users\\Admin\\smruk.exe /o" smruk.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\smruk = "C:\\Users\\Admin\\smruk.exe /v" smruk.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\smruk = "C:\\Users\\Admin\\smruk.exe /r" smruk.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\smruk = "C:\\Users\\Admin\\smruk.exe /z" smruk.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\smruk = "C:\\Users\\Admin\\smruk.exe /a" smruk.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\smruk = "C:\\Users\\Admin\\smruk.exe /j" e89f645c02976bf9c8b55c0352428fd705bea6fc27fbe60fb228f081c88ea162.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\smruk = "C:\\Users\\Admin\\smruk.exe /w" smruk.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\smruk = "C:\\Users\\Admin\\smruk.exe /y" smruk.exe Key created \REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\ smruk.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\smruk = "C:\\Users\\Admin\\smruk.exe /j" smruk.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\smruk = "C:\\Users\\Admin\\smruk.exe /k" smruk.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\smruk = "C:\\Users\\Admin\\smruk.exe /y" smruk.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\smruk = "C:\\Users\\Admin\\smruk.exe /f" smruk.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\smruk = "C:\\Users\\Admin\\smruk.exe /p" smruk.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\smruk = "C:\\Users\\Admin\\smruk.exe /u" smruk.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\smruk = "C:\\Users\\Admin\\smruk.exe /k" smruk.exe Key created \REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\ e89f645c02976bf9c8b55c0352428fd705bea6fc27fbe60fb228f081c88ea162.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\smruk = "C:\\Users\\Admin\\smruk.exe /n" smruk.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\smruk = "C:\\Users\\Admin\\smruk.exe /s" smruk.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\smruk = "C:\\Users\\Admin\\smruk.exe /f" smruk.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\smruk = "C:\\Users\\Admin\\smruk.exe /v" smruk.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\smruk = "C:\\Users\\Admin\\smruk.exe /z" smruk.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\smruk = "C:\\Users\\Admin\\smruk.exe /t" smruk.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\smruk = "C:\\Users\\Admin\\smruk.exe /e" smruk.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\smruk = "C:\\Users\\Admin\\smruk.exe /v" e89f645c02976bf9c8b55c0352428fd705bea6fc27fbe60fb228f081c88ea162.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\smruk = "C:\\Users\\Admin\\smruk.exe /q" smruk.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\smruk = "C:\\Users\\Admin\\smruk.exe /i" smruk.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\smruk = "C:\\Users\\Admin\\smruk.exe /b" smruk.exe Key created \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Windows\CurrentVersion\Run\ smruk.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\smruk = "C:\\Users\\Admin\\smruk.exe /g" smruk.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\smruk = "C:\\Users\\Admin\\smruk.exe /l" smruk.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\smruk = "C:\\Users\\Admin\\smruk.exe /q" smruk.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\smruk = "C:\\Users\\Admin\\smruk.exe /m" smruk.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\smruk = "C:\\Users\\Admin\\smruk.exe /x" smruk.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\smruk = "C:\\Users\\Admin\\smruk.exe /p" smruk.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\smruk = "C:\\Users\\Admin\\smruk.exe /e" smruk.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\smruk = "C:\\Users\\Admin\\smruk.exe /d" smruk.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\smruk = "C:\\Users\\Admin\\smruk.exe /u" smruk.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\smruk = "C:\\Users\\Admin\\smruk.exe /j" smruk.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\smruk = "C:\\Users\\Admin\\smruk.exe /c" smruk.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\smruk = "C:\\Users\\Admin\\smruk.exe /m" smruk.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\smruk = "C:\\Users\\Admin\\smruk.exe /t" smruk.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\smruk = "C:\\Users\\Admin\\smruk.exe /s" smruk.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\smruk = "C:\\Users\\Admin\\smruk.exe /w" smruk.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\smruk = "C:\\Users\\Admin\\smruk.exe /h" smruk.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\smruk = "C:\\Users\\Admin\\smruk.exe /g" smruk.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\smruk = "C:\\Users\\Admin\\smruk.exe /r" smruk.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\smruk = "C:\\Users\\Admin\\smruk.exe /h" smruk.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\smruk = "C:\\Users\\Admin\\smruk.exe /b" smruk.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\smruk = "C:\\Users\\Admin\\smruk.exe /d" smruk.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\smruk = "C:\\Users\\Admin\\smruk.exe /c" smruk.exe Key created \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Windows\CurrentVersion\Run\ e89f645c02976bf9c8b55c0352428fd705bea6fc27fbe60fb228f081c88ea162.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\smruk = "C:\\Users\\Admin\\smruk.exe /o" smruk.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\smruk = "C:\\Users\\Admin\\smruk.exe /a" smruk.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\smruk = "C:\\Users\\Admin\\smruk.exe /i" smruk.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\smruk = "C:\\Users\\Admin\\smruk.exe /x" smruk.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\smruk = "C:\\Users\\Admin\\smruk.exe /n" smruk.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 4464 e89f645c02976bf9c8b55c0352428fd705bea6fc27fbe60fb228f081c88ea162.exe 4464 e89f645c02976bf9c8b55c0352428fd705bea6fc27fbe60fb228f081c88ea162.exe 536 smruk.exe 536 smruk.exe 536 smruk.exe 536 smruk.exe 536 smruk.exe 536 smruk.exe 536 smruk.exe 536 smruk.exe 536 smruk.exe 536 smruk.exe 536 smruk.exe 536 smruk.exe 536 smruk.exe 536 smruk.exe 536 smruk.exe 536 smruk.exe 536 smruk.exe 536 smruk.exe 536 smruk.exe 536 smruk.exe 536 smruk.exe 536 smruk.exe 536 smruk.exe 536 smruk.exe 536 smruk.exe 536 smruk.exe 536 smruk.exe 536 smruk.exe 536 smruk.exe 536 smruk.exe 536 smruk.exe 536 smruk.exe 536 smruk.exe 536 smruk.exe 536 smruk.exe 536 smruk.exe 536 smruk.exe 536 smruk.exe 536 smruk.exe 536 smruk.exe 536 smruk.exe 536 smruk.exe 536 smruk.exe 536 smruk.exe 536 smruk.exe 536 smruk.exe 536 smruk.exe 536 smruk.exe 536 smruk.exe 536 smruk.exe 536 smruk.exe 536 smruk.exe 536 smruk.exe 536 smruk.exe 536 smruk.exe 536 smruk.exe 536 smruk.exe 536 smruk.exe 536 smruk.exe 536 smruk.exe 536 smruk.exe 536 smruk.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 536 smruk.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 4464 e89f645c02976bf9c8b55c0352428fd705bea6fc27fbe60fb228f081c88ea162.exe 536 smruk.exe -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 4464 wrote to memory of 536 4464 e89f645c02976bf9c8b55c0352428fd705bea6fc27fbe60fb228f081c88ea162.exe 81 PID 4464 wrote to memory of 536 4464 e89f645c02976bf9c8b55c0352428fd705bea6fc27fbe60fb228f081c88ea162.exe 81 PID 4464 wrote to memory of 536 4464 e89f645c02976bf9c8b55c0352428fd705bea6fc27fbe60fb228f081c88ea162.exe 81
Processes
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C:\Users\Admin\AppData\Local\Temp\e89f645c02976bf9c8b55c0352428fd705bea6fc27fbe60fb228f081c88ea162.exe"C:\Users\Admin\AppData\Local\Temp\e89f645c02976bf9c8b55c0352428fd705bea6fc27fbe60fb228f081c88ea162.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:4464 -
C:\Users\Admin\smruk.exe"C:\Users\Admin\smruk.exe"2⤵
- Modifies visiblity of hidden/system files in Explorer
- Executes dropped EXE
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of SetWindowsHookEx
PID:536
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
172KB
MD5e7ff3778e5b305d3432c179519aefa0a
SHA1bd3224d3b59ad40e8ecc8f4eeda2cd2fe5e1f701
SHA256256f72afbd8dda3c6e901474e8bc92606e8c1a0484a230a95a98bf9037275c6c
SHA512e1ded8a850bab0ff7bc8e0bec4e7bb7e71b58ad07f9df8a65e906baece7d439893de6f12d95c72be6bec4209981c2f71dd0f0435990fa5214226e53766764caf
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Filesize
172KB
MD5e7ff3778e5b305d3432c179519aefa0a
SHA1bd3224d3b59ad40e8ecc8f4eeda2cd2fe5e1f701
SHA256256f72afbd8dda3c6e901474e8bc92606e8c1a0484a230a95a98bf9037275c6c
SHA512e1ded8a850bab0ff7bc8e0bec4e7bb7e71b58ad07f9df8a65e906baece7d439893de6f12d95c72be6bec4209981c2f71dd0f0435990fa5214226e53766764caf