Analysis
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max time kernel
151s -
max time network
45s -
platform
windows7_x64 -
resource
win7-20220812-en -
resource tags
arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system -
submitted
29/10/2022, 16:26
Static task
static1
Behavioral task
behavioral1
Sample
a0b4773c2daaa1245f91238c63f06a8d535a6fe328bcc706623ba4848ffed3cb.exe
Resource
win7-20220812-en
windows7-x64
8 signatures
150 seconds
Behavioral task
behavioral2
Sample
a0b4773c2daaa1245f91238c63f06a8d535a6fe328bcc706623ba4848ffed3cb.exe
Resource
win10v2004-20220901-en
windows10-2004-x64
8 signatures
150 seconds
General
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Target
a0b4773c2daaa1245f91238c63f06a8d535a6fe328bcc706623ba4848ffed3cb.exe
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Size
184KB
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MD5
841f0fbc1e5ab947b2d1489633d04990
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SHA1
11c62a6ee4a88ffc5e25b7806edebe223d076209
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SHA256
a0b4773c2daaa1245f91238c63f06a8d535a6fe328bcc706623ba4848ffed3cb
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SHA512
404db7dda44a0b18a0740fa7e7c820cd1c56b68a1572ad3432c3bbcdc675de7bbeb99af59f8b8f330b38835d421325495ed875aaf370f8fe73945d5560818717
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SSDEEP
3072:PPpo6364GDs8F+7+w3wrOwo9aXw9Nf6b2fG+b6:PPpoO6JG3f6jH
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-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" a0b4773c2daaa1245f91238c63f06a8d535a6fe328bcc706623ba4848ffed3cb.exe Set value (int) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" cuivuo.exe -
Executes dropped EXE 1 IoCs
pid Process 1728 cuivuo.exe -
Loads dropped DLL 2 IoCs
pid Process 2036 a0b4773c2daaa1245f91238c63f06a8d535a6fe328bcc706623ba4848ffed3cb.exe 2036 a0b4773c2daaa1245f91238c63f06a8d535a6fe328bcc706623ba4848ffed3cb.exe -
Adds Run key to start application 2 TTPs 29 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\ a0b4773c2daaa1245f91238c63f06a8d535a6fe328bcc706623ba4848ffed3cb.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\cuivuo = "C:\\Users\\Admin\\cuivuo.exe /c" a0b4773c2daaa1245f91238c63f06a8d535a6fe328bcc706623ba4848ffed3cb.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\cuivuo = "C:\\Users\\Admin\\cuivuo.exe /a" cuivuo.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\cuivuo = "C:\\Users\\Admin\\cuivuo.exe /t" cuivuo.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\cuivuo = "C:\\Users\\Admin\\cuivuo.exe /v" cuivuo.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\cuivuo = "C:\\Users\\Admin\\cuivuo.exe /l" cuivuo.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\cuivuo = "C:\\Users\\Admin\\cuivuo.exe /x" cuivuo.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\cuivuo = "C:\\Users\\Admin\\cuivuo.exe /o" cuivuo.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\cuivuo = "C:\\Users\\Admin\\cuivuo.exe /e" cuivuo.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\cuivuo = "C:\\Users\\Admin\\cuivuo.exe /f" cuivuo.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\cuivuo = "C:\\Users\\Admin\\cuivuo.exe /j" cuivuo.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\cuivuo = "C:\\Users\\Admin\\cuivuo.exe /d" cuivuo.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\cuivuo = "C:\\Users\\Admin\\cuivuo.exe /u" cuivuo.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\cuivuo = "C:\\Users\\Admin\\cuivuo.exe /h" cuivuo.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\cuivuo = "C:\\Users\\Admin\\cuivuo.exe /y" cuivuo.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\cuivuo = "C:\\Users\\Admin\\cuivuo.exe /b" cuivuo.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\cuivuo = "C:\\Users\\Admin\\cuivuo.exe /c" cuivuo.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\cuivuo = "C:\\Users\\Admin\\cuivuo.exe /z" cuivuo.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\cuivuo = "C:\\Users\\Admin\\cuivuo.exe /s" cuivuo.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\cuivuo = "C:\\Users\\Admin\\cuivuo.exe /i" cuivuo.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\cuivuo = "C:\\Users\\Admin\\cuivuo.exe /p" cuivuo.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\cuivuo = "C:\\Users\\Admin\\cuivuo.exe /q" cuivuo.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\cuivuo = "C:\\Users\\Admin\\cuivuo.exe /m" cuivuo.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\cuivuo = "C:\\Users\\Admin\\cuivuo.exe /k" cuivuo.exe Key created \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\ cuivuo.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\cuivuo = "C:\\Users\\Admin\\cuivuo.exe /g" cuivuo.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\cuivuo = "C:\\Users\\Admin\\cuivuo.exe /w" cuivuo.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\cuivuo = "C:\\Users\\Admin\\cuivuo.exe /r" cuivuo.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\cuivuo = "C:\\Users\\Admin\\cuivuo.exe /n" cuivuo.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 2036 a0b4773c2daaa1245f91238c63f06a8d535a6fe328bcc706623ba4848ffed3cb.exe 1728 cuivuo.exe 1728 cuivuo.exe 1728 cuivuo.exe 1728 cuivuo.exe 1728 cuivuo.exe 1728 cuivuo.exe 1728 cuivuo.exe 1728 cuivuo.exe 1728 cuivuo.exe 1728 cuivuo.exe 1728 cuivuo.exe 1728 cuivuo.exe 1728 cuivuo.exe 1728 cuivuo.exe 1728 cuivuo.exe 1728 cuivuo.exe 1728 cuivuo.exe 1728 cuivuo.exe 1728 cuivuo.exe 1728 cuivuo.exe 1728 cuivuo.exe 1728 cuivuo.exe 1728 cuivuo.exe 1728 cuivuo.exe 1728 cuivuo.exe 1728 cuivuo.exe 1728 cuivuo.exe 1728 cuivuo.exe 1728 cuivuo.exe 1728 cuivuo.exe 1728 cuivuo.exe 1728 cuivuo.exe 1728 cuivuo.exe 1728 cuivuo.exe 1728 cuivuo.exe 1728 cuivuo.exe 1728 cuivuo.exe 1728 cuivuo.exe 1728 cuivuo.exe 1728 cuivuo.exe 1728 cuivuo.exe 1728 cuivuo.exe 1728 cuivuo.exe 1728 cuivuo.exe 1728 cuivuo.exe 1728 cuivuo.exe 1728 cuivuo.exe 1728 cuivuo.exe 1728 cuivuo.exe 1728 cuivuo.exe 1728 cuivuo.exe 1728 cuivuo.exe 1728 cuivuo.exe 1728 cuivuo.exe 1728 cuivuo.exe 1728 cuivuo.exe 1728 cuivuo.exe 1728 cuivuo.exe 1728 cuivuo.exe 1728 cuivuo.exe 1728 cuivuo.exe 1728 cuivuo.exe 1728 cuivuo.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 2036 a0b4773c2daaa1245f91238c63f06a8d535a6fe328bcc706623ba4848ffed3cb.exe 1728 cuivuo.exe -
Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 2036 wrote to memory of 1728 2036 a0b4773c2daaa1245f91238c63f06a8d535a6fe328bcc706623ba4848ffed3cb.exe 28 PID 2036 wrote to memory of 1728 2036 a0b4773c2daaa1245f91238c63f06a8d535a6fe328bcc706623ba4848ffed3cb.exe 28 PID 2036 wrote to memory of 1728 2036 a0b4773c2daaa1245f91238c63f06a8d535a6fe328bcc706623ba4848ffed3cb.exe 28 PID 2036 wrote to memory of 1728 2036 a0b4773c2daaa1245f91238c63f06a8d535a6fe328bcc706623ba4848ffed3cb.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\a0b4773c2daaa1245f91238c63f06a8d535a6fe328bcc706623ba4848ffed3cb.exe"C:\Users\Admin\AppData\Local\Temp\a0b4773c2daaa1245f91238c63f06a8d535a6fe328bcc706623ba4848ffed3cb.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:2036 -
C:\Users\Admin\cuivuo.exe"C:\Users\Admin\cuivuo.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:1728
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
184KB
MD5ca43c88ebab2bbc0d3ecf73314bf60e1
SHA155234935a8003d75d1e68afac4663dee2c72c07f
SHA256766f084994e3be2ca1dac8d03492aee34c54619c273a78f56c5d29537bd252c7
SHA512a15093efc0590ace65c54b7911355d97707ed59d962ac48d49ae809e7a44044d58cac837d5afb43001e0553c5ea4001e4178a8bd0a474710cead247aa4d65739
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Filesize
184KB
MD5ca43c88ebab2bbc0d3ecf73314bf60e1
SHA155234935a8003d75d1e68afac4663dee2c72c07f
SHA256766f084994e3be2ca1dac8d03492aee34c54619c273a78f56c5d29537bd252c7
SHA512a15093efc0590ace65c54b7911355d97707ed59d962ac48d49ae809e7a44044d58cac837d5afb43001e0553c5ea4001e4178a8bd0a474710cead247aa4d65739
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Filesize
184KB
MD5ca43c88ebab2bbc0d3ecf73314bf60e1
SHA155234935a8003d75d1e68afac4663dee2c72c07f
SHA256766f084994e3be2ca1dac8d03492aee34c54619c273a78f56c5d29537bd252c7
SHA512a15093efc0590ace65c54b7911355d97707ed59d962ac48d49ae809e7a44044d58cac837d5afb43001e0553c5ea4001e4178a8bd0a474710cead247aa4d65739
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Filesize
184KB
MD5ca43c88ebab2bbc0d3ecf73314bf60e1
SHA155234935a8003d75d1e68afac4663dee2c72c07f
SHA256766f084994e3be2ca1dac8d03492aee34c54619c273a78f56c5d29537bd252c7
SHA512a15093efc0590ace65c54b7911355d97707ed59d962ac48d49ae809e7a44044d58cac837d5afb43001e0553c5ea4001e4178a8bd0a474710cead247aa4d65739