Analysis
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max time kernel
177s -
max time network
182s -
platform
windows10-2004_x64 -
resource
win10v2004-20220812-en -
resource tags
arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system -
submitted
14/10/2022, 10:18
Static task
static1
Behavioral task
behavioral1
Sample
b31c4c8856197e93ae2456ac30aff3bf56c110dafcbb61773695f55219e5ec69.exe
Resource
win7-20220812-en
windows7-x64
8 signatures
150 seconds
Behavioral task
behavioral2
Sample
b31c4c8856197e93ae2456ac30aff3bf56c110dafcbb61773695f55219e5ec69.exe
Resource
win10v2004-20220812-en
windows10-2004-x64
8 signatures
150 seconds
General
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Target
b31c4c8856197e93ae2456ac30aff3bf56c110dafcbb61773695f55219e5ec69.exe
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Size
208KB
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MD5
73a477cf341398696e96ec64a33c3d1e
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SHA1
8427cef6f1b10564f3dddf637df628efd92e42f5
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SHA256
b31c4c8856197e93ae2456ac30aff3bf56c110dafcbb61773695f55219e5ec69
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SHA512
53d6bdced3865b73fcb112a484fcf49aae25a07d2fb596811810f75855f77a391e42930729891a058be605b1881493e9300defc3e67e6a05768eec06d99a9512
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SSDEEP
6144:9ooseuQmToYfPeffkxsthVIVO+b/RnmbT4PW9UmE7ldESgvSAOugwq:9DuQmToYfPeffkxsthVIVO+b/9mbkPW6
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" b31c4c8856197e93ae2456ac30aff3bf56c110dafcbb61773695f55219e5ec69.exe Set value (int) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" muusen.exe -
Executes dropped EXE 1 IoCs
pid Process 4528 muusen.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 b31c4c8856197e93ae2456ac30aff3bf56c110dafcbb61773695f55219e5ec69.exe -
Adds Run key to start application 2 TTPs 55 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\muusen = "C:\\Users\\Admin\\muusen.exe /Q" muusen.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\muusen = "C:\\Users\\Admin\\muusen.exe /V" muusen.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\muusen = "C:\\Users\\Admin\\muusen.exe /p" muusen.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\muusen = "C:\\Users\\Admin\\muusen.exe /C" muusen.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\muusen = "C:\\Users\\Admin\\muusen.exe /N" muusen.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\muusen = "C:\\Users\\Admin\\muusen.exe /A" muusen.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\muusen = "C:\\Users\\Admin\\muusen.exe /l" muusen.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\muusen = "C:\\Users\\Admin\\muusen.exe /e" muusen.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\muusen = "C:\\Users\\Admin\\muusen.exe /x" muusen.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\muusen = "C:\\Users\\Admin\\muusen.exe /E" muusen.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\muusen = "C:\\Users\\Admin\\muusen.exe /D" muusen.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\muusen = "C:\\Users\\Admin\\muusen.exe /H" muusen.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\muusen = "C:\\Users\\Admin\\muusen.exe /I" muusen.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\muusen = "C:\\Users\\Admin\\muusen.exe /q" muusen.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\muusen = "C:\\Users\\Admin\\muusen.exe /f" muusen.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\muusen = "C:\\Users\\Admin\\muusen.exe /M" muusen.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\muusen = "C:\\Users\\Admin\\muusen.exe /L" muusen.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\muusen = "C:\\Users\\Admin\\muusen.exe /U" muusen.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\muusen = "C:\\Users\\Admin\\muusen.exe /r" muusen.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\muusen = "C:\\Users\\Admin\\muusen.exe /k" muusen.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\muusen = "C:\\Users\\Admin\\muusen.exe /P" muusen.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\muusen = "C:\\Users\\Admin\\muusen.exe /F" muusen.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\muusen = "C:\\Users\\Admin\\muusen.exe /K" muusen.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\muusen = "C:\\Users\\Admin\\muusen.exe /i" muusen.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\muusen = "C:\\Users\\Admin\\muusen.exe /w" muusen.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\muusen = "C:\\Users\\Admin\\muusen.exe /c" muusen.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\muusen = "C:\\Users\\Admin\\muusen.exe /T" muusen.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\muusen = "C:\\Users\\Admin\\muusen.exe /B" muusen.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\muusen = "C:\\Users\\Admin\\muusen.exe /X" muusen.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\muusen = "C:\\Users\\Admin\\muusen.exe /P" b31c4c8856197e93ae2456ac30aff3bf56c110dafcbb61773695f55219e5ec69.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\muusen = "C:\\Users\\Admin\\muusen.exe /J" muusen.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\muusen = "C:\\Users\\Admin\\muusen.exe /h" muusen.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\muusen = "C:\\Users\\Admin\\muusen.exe /R" muusen.exe Key created \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Windows\CurrentVersion\Run\ muusen.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\muusen = "C:\\Users\\Admin\\muusen.exe /a" muusen.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\muusen = "C:\\Users\\Admin\\muusen.exe /b" muusen.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\muusen = "C:\\Users\\Admin\\muusen.exe /s" muusen.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\muusen = "C:\\Users\\Admin\\muusen.exe /d" muusen.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\muusen = "C:\\Users\\Admin\\muusen.exe /G" muusen.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\muusen = "C:\\Users\\Admin\\muusen.exe /o" muusen.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\muusen = "C:\\Users\\Admin\\muusen.exe /n" muusen.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\muusen = "C:\\Users\\Admin\\muusen.exe /S" muusen.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\muusen = "C:\\Users\\Admin\\muusen.exe /u" muusen.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\muusen = "C:\\Users\\Admin\\muusen.exe /m" muusen.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\muusen = "C:\\Users\\Admin\\muusen.exe /t" muusen.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\muusen = "C:\\Users\\Admin\\muusen.exe /z" muusen.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\muusen = "C:\\Users\\Admin\\muusen.exe /j" muusen.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\muusen = "C:\\Users\\Admin\\muusen.exe /O" muusen.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\muusen = "C:\\Users\\Admin\\muusen.exe /Z" muusen.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\muusen = "C:\\Users\\Admin\\muusen.exe /W" muusen.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\muusen = "C:\\Users\\Admin\\muusen.exe /v" muusen.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\muusen = "C:\\Users\\Admin\\muusen.exe /y" muusen.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\muusen = "C:\\Users\\Admin\\muusen.exe /Y" muusen.exe Key created \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Windows\CurrentVersion\Run\ b31c4c8856197e93ae2456ac30aff3bf56c110dafcbb61773695f55219e5ec69.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\muusen = "C:\\Users\\Admin\\muusen.exe /g" muusen.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 5060 b31c4c8856197e93ae2456ac30aff3bf56c110dafcbb61773695f55219e5ec69.exe 5060 b31c4c8856197e93ae2456ac30aff3bf56c110dafcbb61773695f55219e5ec69.exe 4528 muusen.exe 4528 muusen.exe 4528 muusen.exe 4528 muusen.exe 4528 muusen.exe 4528 muusen.exe 4528 muusen.exe 4528 muusen.exe 4528 muusen.exe 4528 muusen.exe 4528 muusen.exe 4528 muusen.exe 4528 muusen.exe 4528 muusen.exe 4528 muusen.exe 4528 muusen.exe 4528 muusen.exe 4528 muusen.exe 4528 muusen.exe 4528 muusen.exe 4528 muusen.exe 4528 muusen.exe 4528 muusen.exe 4528 muusen.exe 4528 muusen.exe 4528 muusen.exe 4528 muusen.exe 4528 muusen.exe 4528 muusen.exe 4528 muusen.exe 4528 muusen.exe 4528 muusen.exe 4528 muusen.exe 4528 muusen.exe 4528 muusen.exe 4528 muusen.exe 4528 muusen.exe 4528 muusen.exe 4528 muusen.exe 4528 muusen.exe 4528 muusen.exe 4528 muusen.exe 4528 muusen.exe 4528 muusen.exe 4528 muusen.exe 4528 muusen.exe 4528 muusen.exe 4528 muusen.exe 4528 muusen.exe 4528 muusen.exe 4528 muusen.exe 4528 muusen.exe 4528 muusen.exe 4528 muusen.exe 4528 muusen.exe 4528 muusen.exe 4528 muusen.exe 4528 muusen.exe 4528 muusen.exe 4528 muusen.exe 4528 muusen.exe 4528 muusen.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 5060 b31c4c8856197e93ae2456ac30aff3bf56c110dafcbb61773695f55219e5ec69.exe 4528 muusen.exe -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 5060 wrote to memory of 4528 5060 b31c4c8856197e93ae2456ac30aff3bf56c110dafcbb61773695f55219e5ec69.exe 85 PID 5060 wrote to memory of 4528 5060 b31c4c8856197e93ae2456ac30aff3bf56c110dafcbb61773695f55219e5ec69.exe 85 PID 5060 wrote to memory of 4528 5060 b31c4c8856197e93ae2456ac30aff3bf56c110dafcbb61773695f55219e5ec69.exe 85
Processes
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C:\Users\Admin\AppData\Local\Temp\b31c4c8856197e93ae2456ac30aff3bf56c110dafcbb61773695f55219e5ec69.exe"C:\Users\Admin\AppData\Local\Temp\b31c4c8856197e93ae2456ac30aff3bf56c110dafcbb61773695f55219e5ec69.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:5060 -
C:\Users\Admin\muusen.exe"C:\Users\Admin\muusen.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:4528
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
208KB
MD59c44ee448274922f2e7bc1b0b5f0a849
SHA15f1427f282bd965ff54b2686f410bca02429ce84
SHA256d27e64db99c8101aff33800bc0956f1d301818131dd54d5a61203778a0f71b51
SHA5124b228950610559fbcda8fcc802ef2ed54b7f228313bc181555c42a3ff46d1055f682891d6c28119fa94f43435d680c35b34374ff5eefccb6c57090113e1154c8
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Filesize
208KB
MD59c44ee448274922f2e7bc1b0b5f0a849
SHA15f1427f282bd965ff54b2686f410bca02429ce84
SHA256d27e64db99c8101aff33800bc0956f1d301818131dd54d5a61203778a0f71b51
SHA5124b228950610559fbcda8fcc802ef2ed54b7f228313bc181555c42a3ff46d1055f682891d6c28119fa94f43435d680c35b34374ff5eefccb6c57090113e1154c8