Analysis
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max time kernel
150s -
max time network
153s -
platform
windows10-2004_x64 -
resource
win10v2004-20220812-en -
resource tags
arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system -
submitted
19/09/2022, 02:17
Static task
static1
Behavioral task
behavioral1
Sample
82aa3f45d0e71ed4736a8fe0ce1881eaba66b35e4c1ef5b5204816c3167fc48c.exe
Resource
win7-20220812-en
windows7-x64
8 signatures
150 seconds
Behavioral task
behavioral2
Sample
82aa3f45d0e71ed4736a8fe0ce1881eaba66b35e4c1ef5b5204816c3167fc48c.exe
Resource
win10v2004-20220812-en
windows10-2004-x64
8 signatures
150 seconds
General
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Target
82aa3f45d0e71ed4736a8fe0ce1881eaba66b35e4c1ef5b5204816c3167fc48c.exe
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Size
188KB
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MD5
3c52d0cdccf046da4700f74f1c18c4f7
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SHA1
e665066968f4dd7fee2199f9f4aeb870c41fe452
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SHA256
82aa3f45d0e71ed4736a8fe0ce1881eaba66b35e4c1ef5b5204816c3167fc48c
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SHA512
28b0e0d4d17ae4bf87a11b9ab3d467756f6cb22e7c22b208d78407818e61543341ef89becb660b2afb0cf6280cc260446613a4edcd83dbb956e1cb5c45dd7a16
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SSDEEP
3072:x+bMaGph5b/VgpalJEBNmKnvmb7/D26Dv82KSaIwbsf3vxY33kiSEzTDySnI0ngS:uMaohh/W4lJhKnvmb7/D26DE2KSabbqQ
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" 82aa3f45d0e71ed4736a8fe0ce1881eaba66b35e4c1ef5b5204816c3167fc48c.exe Set value (int) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" muezu.exe -
Executes dropped EXE 1 IoCs
pid Process 2572 muezu.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 82aa3f45d0e71ed4736a8fe0ce1881eaba66b35e4c1ef5b5204816c3167fc48c.exe -
Adds Run key to start application 2 TTPs 51 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\muezu = "C:\\Users\\Admin\\muezu.exe /Q" muezu.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\muezu = "C:\\Users\\Admin\\muezu.exe /C" muezu.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\muezu = "C:\\Users\\Admin\\muezu.exe /h" muezu.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\muezu = "C:\\Users\\Admin\\muezu.exe /n" muezu.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\muezu = "C:\\Users\\Admin\\muezu.exe /N" muezu.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\muezu = "C:\\Users\\Admin\\muezu.exe /z" 82aa3f45d0e71ed4736a8fe0ce1881eaba66b35e4c1ef5b5204816c3167fc48c.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\muezu = "C:\\Users\\Admin\\muezu.exe /J" muezu.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\muezu = "C:\\Users\\Admin\\muezu.exe /z" muezu.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\muezu = "C:\\Users\\Admin\\muezu.exe /u" muezu.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\muezu = "C:\\Users\\Admin\\muezu.exe /d" muezu.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\muezu = "C:\\Users\\Admin\\muezu.exe /R" muezu.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\muezu = "C:\\Users\\Admin\\muezu.exe /k" muezu.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\muezu = "C:\\Users\\Admin\\muezu.exe /L" muezu.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\muezu = "C:\\Users\\Admin\\muezu.exe /M" muezu.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\muezu = "C:\\Users\\Admin\\muezu.exe /i" muezu.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\muezu = "C:\\Users\\Admin\\muezu.exe /E" muezu.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\muezu = "C:\\Users\\Admin\\muezu.exe /X" muezu.exe Key created \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Windows\CurrentVersion\Run\ 82aa3f45d0e71ed4736a8fe0ce1881eaba66b35e4c1ef5b5204816c3167fc48c.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\muezu = "C:\\Users\\Admin\\muezu.exe /D" muezu.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\muezu = "C:\\Users\\Admin\\muezu.exe /Y" muezu.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\muezu = "C:\\Users\\Admin\\muezu.exe /q" muezu.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\muezu = "C:\\Users\\Admin\\muezu.exe /m" muezu.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\muezu = "C:\\Users\\Admin\\muezu.exe /O" muezu.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\muezu = "C:\\Users\\Admin\\muezu.exe /e" muezu.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\muezu = "C:\\Users\\Admin\\muezu.exe /G" muezu.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\muezu = "C:\\Users\\Admin\\muezu.exe /t" muezu.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\muezu = "C:\\Users\\Admin\\muezu.exe /V" muezu.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\muezu = "C:\\Users\\Admin\\muezu.exe /B" muezu.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\muezu = "C:\\Users\\Admin\\muezu.exe /U" muezu.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\muezu = "C:\\Users\\Admin\\muezu.exe /Z" muezu.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\muezu = "C:\\Users\\Admin\\muezu.exe /c" muezu.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\muezu = "C:\\Users\\Admin\\muezu.exe /f" muezu.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\muezu = "C:\\Users\\Admin\\muezu.exe /y" muezu.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\muezu = "C:\\Users\\Admin\\muezu.exe /l" muezu.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\muezu = "C:\\Users\\Admin\\muezu.exe /P" muezu.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\muezu = "C:\\Users\\Admin\\muezu.exe /W" muezu.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\muezu = "C:\\Users\\Admin\\muezu.exe /A" muezu.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\muezu = "C:\\Users\\Admin\\muezu.exe /I" muezu.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\muezu = "C:\\Users\\Admin\\muezu.exe /a" muezu.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\muezu = "C:\\Users\\Admin\\muezu.exe /H" muezu.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\muezu = "C:\\Users\\Admin\\muezu.exe /b" muezu.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\muezu = "C:\\Users\\Admin\\muezu.exe /v" muezu.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\muezu = "C:\\Users\\Admin\\muezu.exe /F" muezu.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\muezu = "C:\\Users\\Admin\\muezu.exe /x" muezu.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\muezu = "C:\\Users\\Admin\\muezu.exe /S" muezu.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\muezu = "C:\\Users\\Admin\\muezu.exe /o" muezu.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\muezu = "C:\\Users\\Admin\\muezu.exe /K" muezu.exe Key created \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Windows\CurrentVersion\Run\ muezu.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\muezu = "C:\\Users\\Admin\\muezu.exe /p" muezu.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\muezu = "C:\\Users\\Admin\\muezu.exe /g" muezu.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\muezu = "C:\\Users\\Admin\\muezu.exe /s" muezu.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 4112 82aa3f45d0e71ed4736a8fe0ce1881eaba66b35e4c1ef5b5204816c3167fc48c.exe 4112 82aa3f45d0e71ed4736a8fe0ce1881eaba66b35e4c1ef5b5204816c3167fc48c.exe 2572 muezu.exe 2572 muezu.exe 2572 muezu.exe 2572 muezu.exe 2572 muezu.exe 2572 muezu.exe 2572 muezu.exe 2572 muezu.exe 2572 muezu.exe 2572 muezu.exe 2572 muezu.exe 2572 muezu.exe 2572 muezu.exe 2572 muezu.exe 2572 muezu.exe 2572 muezu.exe 2572 muezu.exe 2572 muezu.exe 2572 muezu.exe 2572 muezu.exe 2572 muezu.exe 2572 muezu.exe 2572 muezu.exe 2572 muezu.exe 2572 muezu.exe 2572 muezu.exe 2572 muezu.exe 2572 muezu.exe 2572 muezu.exe 2572 muezu.exe 2572 muezu.exe 2572 muezu.exe 2572 muezu.exe 2572 muezu.exe 2572 muezu.exe 2572 muezu.exe 2572 muezu.exe 2572 muezu.exe 2572 muezu.exe 2572 muezu.exe 2572 muezu.exe 2572 muezu.exe 2572 muezu.exe 2572 muezu.exe 2572 muezu.exe 2572 muezu.exe 2572 muezu.exe 2572 muezu.exe 2572 muezu.exe 2572 muezu.exe 2572 muezu.exe 2572 muezu.exe 2572 muezu.exe 2572 muezu.exe 2572 muezu.exe 2572 muezu.exe 2572 muezu.exe 2572 muezu.exe 2572 muezu.exe 2572 muezu.exe 2572 muezu.exe 2572 muezu.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 4112 82aa3f45d0e71ed4736a8fe0ce1881eaba66b35e4c1ef5b5204816c3167fc48c.exe 2572 muezu.exe -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 4112 wrote to memory of 2572 4112 82aa3f45d0e71ed4736a8fe0ce1881eaba66b35e4c1ef5b5204816c3167fc48c.exe 78 PID 4112 wrote to memory of 2572 4112 82aa3f45d0e71ed4736a8fe0ce1881eaba66b35e4c1ef5b5204816c3167fc48c.exe 78 PID 4112 wrote to memory of 2572 4112 82aa3f45d0e71ed4736a8fe0ce1881eaba66b35e4c1ef5b5204816c3167fc48c.exe 78
Processes
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C:\Users\Admin\AppData\Local\Temp\82aa3f45d0e71ed4736a8fe0ce1881eaba66b35e4c1ef5b5204816c3167fc48c.exe"C:\Users\Admin\AppData\Local\Temp\82aa3f45d0e71ed4736a8fe0ce1881eaba66b35e4c1ef5b5204816c3167fc48c.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:4112 -
C:\Users\Admin\muezu.exe"C:\Users\Admin\muezu.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:2572
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
188KB
MD5215240355ce9210c66f5396af855b837
SHA1fac9afd33bfe206469613c35d046af97d8cd1a0d
SHA2566ab4b263b4f62a63acfa269f867fbf6dbc3bc021d71bf2cc649e3e4508378475
SHA512a4ccf963efef96e6f921e212ea8d940f682ee8fb751325e418759f0b12ac2ab9d853f0ff889b1f3f9aa88ae9f622d889e5417de90fd35c9f9ab6dda9f2fdc8da
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Filesize
188KB
MD5215240355ce9210c66f5396af855b837
SHA1fac9afd33bfe206469613c35d046af97d8cd1a0d
SHA2566ab4b263b4f62a63acfa269f867fbf6dbc3bc021d71bf2cc649e3e4508378475
SHA512a4ccf963efef96e6f921e212ea8d940f682ee8fb751325e418759f0b12ac2ab9d853f0ff889b1f3f9aa88ae9f622d889e5417de90fd35c9f9ab6dda9f2fdc8da