Analysis
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max time kernel
153s -
max time network
45s -
platform
windows7_x64 -
resource
win7-20220812-en -
resource tags
arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system -
submitted
30-10-2022 19:57
Static task
static1
Behavioral task
behavioral1
Sample
cb075d75bc6df350fa99837968b3e02428a019d44b2bb2bfa12b81c99ee58575.exe
Resource
win7-20220812-en
windows7-x64
8 signatures
150 seconds
Behavioral task
behavioral2
Sample
cb075d75bc6df350fa99837968b3e02428a019d44b2bb2bfa12b81c99ee58575.exe
Resource
win10v2004-20220812-en
windows10-2004-x64
8 signatures
150 seconds
General
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Target
cb075d75bc6df350fa99837968b3e02428a019d44b2bb2bfa12b81c99ee58575.exe
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Size
132KB
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MD5
92397487cb24bed965a583a92d76b912
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SHA1
da80d9f2be8f00ccc07835eb516aff46a9c688b8
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SHA256
cb075d75bc6df350fa99837968b3e02428a019d44b2bb2bfa12b81c99ee58575
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SHA512
68a43954555ffecbe7c2d564faa5310141a069fe48cc3500539df492a50e21345b1e376f1d7c06eba0216db7f156d3f67f5ae8fb7bae2b1f97388c2f86002176
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SSDEEP
3072:VApl++xspX7//GSeIlLXkskMvB00bsMyXeWLku:VApl+I+7//leIBXTkMZ00bsMyXeAk
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-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" cb075d75bc6df350fa99837968b3e02428a019d44b2bb2bfa12b81c99ee58575.exe Set value (int) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" yuhuc.exe -
Executes dropped EXE 1 IoCs
pid Process 1908 yuhuc.exe -
Loads dropped DLL 2 IoCs
pid Process 780 cb075d75bc6df350fa99837968b3e02428a019d44b2bb2bfa12b81c99ee58575.exe 780 cb075d75bc6df350fa99837968b3e02428a019d44b2bb2bfa12b81c99ee58575.exe -
Adds Run key to start application 2 TTPs 53 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\yuhuc = "C:\\Users\\Admin\\yuhuc.exe /A" yuhuc.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\yuhuc = "C:\\Users\\Admin\\yuhuc.exe /Z" yuhuc.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\yuhuc = "C:\\Users\\Admin\\yuhuc.exe /k" yuhuc.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\yuhuc = "C:\\Users\\Admin\\yuhuc.exe /B" yuhuc.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\yuhuc = "C:\\Users\\Admin\\yuhuc.exe /t" yuhuc.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\yuhuc = "C:\\Users\\Admin\\yuhuc.exe /s" yuhuc.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\yuhuc = "C:\\Users\\Admin\\yuhuc.exe /H" yuhuc.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\yuhuc = "C:\\Users\\Admin\\yuhuc.exe /E" yuhuc.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\yuhuc = "C:\\Users\\Admin\\yuhuc.exe /w" yuhuc.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\yuhuc = "C:\\Users\\Admin\\yuhuc.exe /R" yuhuc.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\yuhuc = "C:\\Users\\Admin\\yuhuc.exe /f" yuhuc.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\yuhuc = "C:\\Users\\Admin\\yuhuc.exe /P" yuhuc.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\yuhuc = "C:\\Users\\Admin\\yuhuc.exe /c" yuhuc.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\yuhuc = "C:\\Users\\Admin\\yuhuc.exe /a" yuhuc.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\yuhuc = "C:\\Users\\Admin\\yuhuc.exe /z" yuhuc.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\yuhuc = "C:\\Users\\Admin\\yuhuc.exe /u" yuhuc.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\yuhuc = "C:\\Users\\Admin\\yuhuc.exe /V" yuhuc.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\yuhuc = "C:\\Users\\Admin\\yuhuc.exe /T" yuhuc.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\yuhuc = "C:\\Users\\Admin\\yuhuc.exe /m" yuhuc.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\yuhuc = "C:\\Users\\Admin\\yuhuc.exe /X" yuhuc.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\yuhuc = "C:\\Users\\Admin\\yuhuc.exe /b" yuhuc.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\yuhuc = "C:\\Users\\Admin\\yuhuc.exe /g" yuhuc.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\yuhuc = "C:\\Users\\Admin\\yuhuc.exe /e" yuhuc.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\yuhuc = "C:\\Users\\Admin\\yuhuc.exe /C" yuhuc.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\yuhuc = "C:\\Users\\Admin\\yuhuc.exe /M" yuhuc.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\yuhuc = "C:\\Users\\Admin\\yuhuc.exe /F" yuhuc.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\yuhuc = "C:\\Users\\Admin\\yuhuc.exe /o" yuhuc.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\yuhuc = "C:\\Users\\Admin\\yuhuc.exe /p" yuhuc.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\yuhuc = "C:\\Users\\Admin\\yuhuc.exe /Q" yuhuc.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\yuhuc = "C:\\Users\\Admin\\yuhuc.exe /L" yuhuc.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\yuhuc = "C:\\Users\\Admin\\yuhuc.exe /v" yuhuc.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\yuhuc = "C:\\Users\\Admin\\yuhuc.exe /y" yuhuc.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\yuhuc = "C:\\Users\\Admin\\yuhuc.exe /W" yuhuc.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\yuhuc = "C:\\Users\\Admin\\yuhuc.exe /l" yuhuc.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\yuhuc = "C:\\Users\\Admin\\yuhuc.exe /h" yuhuc.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\yuhuc = "C:\\Users\\Admin\\yuhuc.exe /j" yuhuc.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\yuhuc = "C:\\Users\\Admin\\yuhuc.exe /K" yuhuc.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\yuhuc = "C:\\Users\\Admin\\yuhuc.exe /D" yuhuc.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\yuhuc = "C:\\Users\\Admin\\yuhuc.exe /d" yuhuc.exe Key created \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\ cb075d75bc6df350fa99837968b3e02428a019d44b2bb2bfa12b81c99ee58575.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\yuhuc = "C:\\Users\\Admin\\yuhuc.exe /r" yuhuc.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\yuhuc = "C:\\Users\\Admin\\yuhuc.exe /i" yuhuc.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\yuhuc = "C:\\Users\\Admin\\yuhuc.exe /x" yuhuc.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\yuhuc = "C:\\Users\\Admin\\yuhuc.exe /G" yuhuc.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\yuhuc = "C:\\Users\\Admin\\yuhuc.exe /n" yuhuc.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\yuhuc = "C:\\Users\\Admin\\yuhuc.exe /O" yuhuc.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\yuhuc = "C:\\Users\\Admin\\yuhuc.exe /I" yuhuc.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\yuhuc = "C:\\Users\\Admin\\yuhuc.exe /Y" cb075d75bc6df350fa99837968b3e02428a019d44b2bb2bfa12b81c99ee58575.exe Key created \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\ yuhuc.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\yuhuc = "C:\\Users\\Admin\\yuhuc.exe /N" yuhuc.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\yuhuc = "C:\\Users\\Admin\\yuhuc.exe /J" yuhuc.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\yuhuc = "C:\\Users\\Admin\\yuhuc.exe /q" yuhuc.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\yuhuc = "C:\\Users\\Admin\\yuhuc.exe /S" yuhuc.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 780 cb075d75bc6df350fa99837968b3e02428a019d44b2bb2bfa12b81c99ee58575.exe 1908 yuhuc.exe 1908 yuhuc.exe 1908 yuhuc.exe 1908 yuhuc.exe 1908 yuhuc.exe 1908 yuhuc.exe 1908 yuhuc.exe 1908 yuhuc.exe 1908 yuhuc.exe 1908 yuhuc.exe 1908 yuhuc.exe 1908 yuhuc.exe 1908 yuhuc.exe 1908 yuhuc.exe 1908 yuhuc.exe 1908 yuhuc.exe 1908 yuhuc.exe 1908 yuhuc.exe 1908 yuhuc.exe 1908 yuhuc.exe 1908 yuhuc.exe 1908 yuhuc.exe 1908 yuhuc.exe 1908 yuhuc.exe 1908 yuhuc.exe 1908 yuhuc.exe 1908 yuhuc.exe 1908 yuhuc.exe 1908 yuhuc.exe 1908 yuhuc.exe 1908 yuhuc.exe 1908 yuhuc.exe 1908 yuhuc.exe 1908 yuhuc.exe 1908 yuhuc.exe 1908 yuhuc.exe 1908 yuhuc.exe 1908 yuhuc.exe 1908 yuhuc.exe 1908 yuhuc.exe 1908 yuhuc.exe 1908 yuhuc.exe 1908 yuhuc.exe 1908 yuhuc.exe 1908 yuhuc.exe 1908 yuhuc.exe 1908 yuhuc.exe 1908 yuhuc.exe 1908 yuhuc.exe 1908 yuhuc.exe 1908 yuhuc.exe 1908 yuhuc.exe 1908 yuhuc.exe 1908 yuhuc.exe 1908 yuhuc.exe 1908 yuhuc.exe 1908 yuhuc.exe 1908 yuhuc.exe 1908 yuhuc.exe 1908 yuhuc.exe 1908 yuhuc.exe 1908 yuhuc.exe 1908 yuhuc.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 780 cb075d75bc6df350fa99837968b3e02428a019d44b2bb2bfa12b81c99ee58575.exe 1908 yuhuc.exe -
Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 780 wrote to memory of 1908 780 cb075d75bc6df350fa99837968b3e02428a019d44b2bb2bfa12b81c99ee58575.exe 27 PID 780 wrote to memory of 1908 780 cb075d75bc6df350fa99837968b3e02428a019d44b2bb2bfa12b81c99ee58575.exe 27 PID 780 wrote to memory of 1908 780 cb075d75bc6df350fa99837968b3e02428a019d44b2bb2bfa12b81c99ee58575.exe 27 PID 780 wrote to memory of 1908 780 cb075d75bc6df350fa99837968b3e02428a019d44b2bb2bfa12b81c99ee58575.exe 27
Processes
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C:\Users\Admin\AppData\Local\Temp\cb075d75bc6df350fa99837968b3e02428a019d44b2bb2bfa12b81c99ee58575.exe"C:\Users\Admin\AppData\Local\Temp\cb075d75bc6df350fa99837968b3e02428a019d44b2bb2bfa12b81c99ee58575.exe"1⤵
- Modifies visiblity of hidden/system files in Explorer
- Loads dropped DLL
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:780 -
C:\Users\Admin\yuhuc.exe"C:\Users\Admin\yuhuc.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:1908
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
132KB
MD5b35b741f30cc6d5e7ee7d295c2d3a552
SHA11098505915d95e822f179585a8e3cf46637c8a6b
SHA256fc3a32c521dbc0221a3a8d1a5164baee64a59805b30493aa2d37ca26e2090a8b
SHA512217dd804fbb296af8fa963b8ba830e2ce8a5793ee2ff74ffb5ea9a2c8cb640197c5cf0b9af14b43ac14a1a732d8a800d6f062e3cce4c3418b9f2b1c1e0a5123d
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Filesize
132KB
MD5b35b741f30cc6d5e7ee7d295c2d3a552
SHA11098505915d95e822f179585a8e3cf46637c8a6b
SHA256fc3a32c521dbc0221a3a8d1a5164baee64a59805b30493aa2d37ca26e2090a8b
SHA512217dd804fbb296af8fa963b8ba830e2ce8a5793ee2ff74ffb5ea9a2c8cb640197c5cf0b9af14b43ac14a1a732d8a800d6f062e3cce4c3418b9f2b1c1e0a5123d
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Filesize
132KB
MD5b35b741f30cc6d5e7ee7d295c2d3a552
SHA11098505915d95e822f179585a8e3cf46637c8a6b
SHA256fc3a32c521dbc0221a3a8d1a5164baee64a59805b30493aa2d37ca26e2090a8b
SHA512217dd804fbb296af8fa963b8ba830e2ce8a5793ee2ff74ffb5ea9a2c8cb640197c5cf0b9af14b43ac14a1a732d8a800d6f062e3cce4c3418b9f2b1c1e0a5123d
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Filesize
132KB
MD5b35b741f30cc6d5e7ee7d295c2d3a552
SHA11098505915d95e822f179585a8e3cf46637c8a6b
SHA256fc3a32c521dbc0221a3a8d1a5164baee64a59805b30493aa2d37ca26e2090a8b
SHA512217dd804fbb296af8fa963b8ba830e2ce8a5793ee2ff74ffb5ea9a2c8cb640197c5cf0b9af14b43ac14a1a732d8a800d6f062e3cce4c3418b9f2b1c1e0a5123d