Analysis
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max time kernel
152s -
max time network
53s -
platform
windows7_x64 -
resource
win7-20220812-en -
resource tags
arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system -
submitted
20/10/2022, 01:34
Static task
static1
Behavioral task
behavioral1
Sample
b4896919b8cc4350e25e6755bd563e5ec8c377fb8b792c4b0e0a8df7eb3ac9be.exe
Resource
win7-20220812-en
windows7-x64
8 signatures
150 seconds
Behavioral task
behavioral2
Sample
b4896919b8cc4350e25e6755bd563e5ec8c377fb8b792c4b0e0a8df7eb3ac9be.exe
Resource
win10v2004-20220812-en
windows10-2004-x64
8 signatures
150 seconds
General
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Target
b4896919b8cc4350e25e6755bd563e5ec8c377fb8b792c4b0e0a8df7eb3ac9be.exe
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Size
164KB
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MD5
809eff5a373f4d2ef49b1f4b457fa68e
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SHA1
8711d12afa15bf686f952e0c0210350678b3a0c0
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SHA256
b4896919b8cc4350e25e6755bd563e5ec8c377fb8b792c4b0e0a8df7eb3ac9be
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SHA512
9b6a06aab302bfbce6ee297beb90dcdfdbe5b9b56d4318483449bab555ebd2d4eb861c2e4aaf85f67d234d3287d46d6f307fa8ba5f30a33ccc782f1c52784cdf
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SSDEEP
3072:EVpHp2c5Y2Xcz5LSnlqa1T+iOf1kp5K3U4oQZiE3B7:EV2cO2XclLSnkiOfamAWf
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" b4896919b8cc4350e25e6755bd563e5ec8c377fb8b792c4b0e0a8df7eb3ac9be.exe Set value (int) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" caonux.exe -
Executes dropped EXE 1 IoCs
pid Process 1736 caonux.exe -
Loads dropped DLL 2 IoCs
pid Process 1604 b4896919b8cc4350e25e6755bd563e5ec8c377fb8b792c4b0e0a8df7eb3ac9be.exe 1604 b4896919b8cc4350e25e6755bd563e5ec8c377fb8b792c4b0e0a8df7eb3ac9be.exe -
Adds Run key to start application 2 TTPs 53 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\caonux = "C:\\Users\\Admin\\caonux.exe /f" caonux.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\caonux = "C:\\Users\\Admin\\caonux.exe /L" caonux.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\caonux = "C:\\Users\\Admin\\caonux.exe /k" caonux.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\caonux = "C:\\Users\\Admin\\caonux.exe /i" caonux.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\caonux = "C:\\Users\\Admin\\caonux.exe /p" caonux.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\caonux = "C:\\Users\\Admin\\caonux.exe /g" caonux.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\caonux = "C:\\Users\\Admin\\caonux.exe /j" caonux.exe Key created \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\ b4896919b8cc4350e25e6755bd563e5ec8c377fb8b792c4b0e0a8df7eb3ac9be.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\caonux = "C:\\Users\\Admin\\caonux.exe /b" caonux.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\caonux = "C:\\Users\\Admin\\caonux.exe /J" caonux.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\caonux = "C:\\Users\\Admin\\caonux.exe /h" caonux.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\caonux = "C:\\Users\\Admin\\caonux.exe /F" caonux.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\caonux = "C:\\Users\\Admin\\caonux.exe /d" caonux.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\caonux = "C:\\Users\\Admin\\caonux.exe /z" caonux.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\caonux = "C:\\Users\\Admin\\caonux.exe /B" caonux.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\caonux = "C:\\Users\\Admin\\caonux.exe /K" caonux.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\caonux = "C:\\Users\\Admin\\caonux.exe /a" caonux.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\caonux = "C:\\Users\\Admin\\caonux.exe /Q" caonux.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\caonux = "C:\\Users\\Admin\\caonux.exe /O" caonux.exe Key created \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\ caonux.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\caonux = "C:\\Users\\Admin\\caonux.exe /P" caonux.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\caonux = "C:\\Users\\Admin\\caonux.exe /t" caonux.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\caonux = "C:\\Users\\Admin\\caonux.exe /w" caonux.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\caonux = "C:\\Users\\Admin\\caonux.exe /E" caonux.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\caonux = "C:\\Users\\Admin\\caonux.exe /c" caonux.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\caonux = "C:\\Users\\Admin\\caonux.exe /s" caonux.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\caonux = "C:\\Users\\Admin\\caonux.exe /e" caonux.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\caonux = "C:\\Users\\Admin\\caonux.exe /l" caonux.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\caonux = "C:\\Users\\Admin\\caonux.exe /V" caonux.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\caonux = "C:\\Users\\Admin\\caonux.exe /I" caonux.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\caonux = "C:\\Users\\Admin\\caonux.exe /H" caonux.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\caonux = "C:\\Users\\Admin\\caonux.exe /S" caonux.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\caonux = "C:\\Users\\Admin\\caonux.exe /X" caonux.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\caonux = "C:\\Users\\Admin\\caonux.exe /D" caonux.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\caonux = "C:\\Users\\Admin\\caonux.exe /m" caonux.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\caonux = "C:\\Users\\Admin\\caonux.exe /Z" caonux.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\caonux = "C:\\Users\\Admin\\caonux.exe /y" caonux.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\caonux = "C:\\Users\\Admin\\caonux.exe /J" b4896919b8cc4350e25e6755bd563e5ec8c377fb8b792c4b0e0a8df7eb3ac9be.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\caonux = "C:\\Users\\Admin\\caonux.exe /G" caonux.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\caonux = "C:\\Users\\Admin\\caonux.exe /M" caonux.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\caonux = "C:\\Users\\Admin\\caonux.exe /A" caonux.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\caonux = "C:\\Users\\Admin\\caonux.exe /C" caonux.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\caonux = "C:\\Users\\Admin\\caonux.exe /Y" caonux.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\caonux = "C:\\Users\\Admin\\caonux.exe /q" caonux.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\caonux = "C:\\Users\\Admin\\caonux.exe /o" caonux.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\caonux = "C:\\Users\\Admin\\caonux.exe /n" caonux.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\caonux = "C:\\Users\\Admin\\caonux.exe /N" caonux.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\caonux = "C:\\Users\\Admin\\caonux.exe /T" caonux.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\caonux = "C:\\Users\\Admin\\caonux.exe /R" caonux.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\caonux = "C:\\Users\\Admin\\caonux.exe /U" caonux.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\caonux = "C:\\Users\\Admin\\caonux.exe /u" caonux.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\caonux = "C:\\Users\\Admin\\caonux.exe /r" caonux.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\caonux = "C:\\Users\\Admin\\caonux.exe /v" caonux.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 1604 b4896919b8cc4350e25e6755bd563e5ec8c377fb8b792c4b0e0a8df7eb3ac9be.exe 1736 caonux.exe 1736 caonux.exe 1736 caonux.exe 1736 caonux.exe 1736 caonux.exe 1736 caonux.exe 1736 caonux.exe 1736 caonux.exe 1736 caonux.exe 1736 caonux.exe 1736 caonux.exe 1736 caonux.exe 1736 caonux.exe 1736 caonux.exe 1736 caonux.exe 1736 caonux.exe 1736 caonux.exe 1736 caonux.exe 1736 caonux.exe 1736 caonux.exe 1736 caonux.exe 1736 caonux.exe 1736 caonux.exe 1736 caonux.exe 1736 caonux.exe 1736 caonux.exe 1736 caonux.exe 1736 caonux.exe 1736 caonux.exe 1736 caonux.exe 1736 caonux.exe 1736 caonux.exe 1736 caonux.exe 1736 caonux.exe 1736 caonux.exe 1736 caonux.exe 1736 caonux.exe 1736 caonux.exe 1736 caonux.exe 1736 caonux.exe 1736 caonux.exe 1736 caonux.exe 1736 caonux.exe 1736 caonux.exe 1736 caonux.exe 1736 caonux.exe 1736 caonux.exe 1736 caonux.exe 1736 caonux.exe 1736 caonux.exe 1736 caonux.exe 1736 caonux.exe 1736 caonux.exe 1736 caonux.exe 1736 caonux.exe 1736 caonux.exe 1736 caonux.exe 1736 caonux.exe 1736 caonux.exe 1736 caonux.exe 1736 caonux.exe 1736 caonux.exe 1736 caonux.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 1604 b4896919b8cc4350e25e6755bd563e5ec8c377fb8b792c4b0e0a8df7eb3ac9be.exe 1736 caonux.exe -
Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 1604 wrote to memory of 1736 1604 b4896919b8cc4350e25e6755bd563e5ec8c377fb8b792c4b0e0a8df7eb3ac9be.exe 28 PID 1604 wrote to memory of 1736 1604 b4896919b8cc4350e25e6755bd563e5ec8c377fb8b792c4b0e0a8df7eb3ac9be.exe 28 PID 1604 wrote to memory of 1736 1604 b4896919b8cc4350e25e6755bd563e5ec8c377fb8b792c4b0e0a8df7eb3ac9be.exe 28 PID 1604 wrote to memory of 1736 1604 b4896919b8cc4350e25e6755bd563e5ec8c377fb8b792c4b0e0a8df7eb3ac9be.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\b4896919b8cc4350e25e6755bd563e5ec8c377fb8b792c4b0e0a8df7eb3ac9be.exe"C:\Users\Admin\AppData\Local\Temp\b4896919b8cc4350e25e6755bd563e5ec8c377fb8b792c4b0e0a8df7eb3ac9be.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:1604 -
C:\Users\Admin\caonux.exe"C:\Users\Admin\caonux.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:1736
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
164KB
MD5d1ac131669354a98217a7c34d5f823dd
SHA11e62b9e6d5065157e6bac42c8214885cdb6b4087
SHA2562e7c8ec5ad38c6a8c344a0e7f70446788b75339e3c86d5c3112da308e1ada8ab
SHA512dfdbe58dccdb8354caa2091d02edeaed83e0b2a1473785c3e2ba88e9522a6ace030faf9c7acde6e8d273148c9c041e5c051e63315c26d22312e181a06d96b60e
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Filesize
164KB
MD5d1ac131669354a98217a7c34d5f823dd
SHA11e62b9e6d5065157e6bac42c8214885cdb6b4087
SHA2562e7c8ec5ad38c6a8c344a0e7f70446788b75339e3c86d5c3112da308e1ada8ab
SHA512dfdbe58dccdb8354caa2091d02edeaed83e0b2a1473785c3e2ba88e9522a6ace030faf9c7acde6e8d273148c9c041e5c051e63315c26d22312e181a06d96b60e
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Filesize
164KB
MD5d1ac131669354a98217a7c34d5f823dd
SHA11e62b9e6d5065157e6bac42c8214885cdb6b4087
SHA2562e7c8ec5ad38c6a8c344a0e7f70446788b75339e3c86d5c3112da308e1ada8ab
SHA512dfdbe58dccdb8354caa2091d02edeaed83e0b2a1473785c3e2ba88e9522a6ace030faf9c7acde6e8d273148c9c041e5c051e63315c26d22312e181a06d96b60e
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Filesize
164KB
MD5d1ac131669354a98217a7c34d5f823dd
SHA11e62b9e6d5065157e6bac42c8214885cdb6b4087
SHA2562e7c8ec5ad38c6a8c344a0e7f70446788b75339e3c86d5c3112da308e1ada8ab
SHA512dfdbe58dccdb8354caa2091d02edeaed83e0b2a1473785c3e2ba88e9522a6ace030faf9c7acde6e8d273148c9c041e5c051e63315c26d22312e181a06d96b60e