Analysis
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max time kernel
152s -
max time network
72s -
platform
windows7_x64 -
resource
win7-20220812-en -
resource tags
arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system -
submitted
04-12-2022 17:51
Static task
static1
Behavioral task
behavioral1
Sample
a5ca923dceb0aee349e59666f287352d18f9dc79234fbe02d935ad2ccc8cdfc0.exe
Resource
win7-20220812-en
Behavioral task
behavioral2
Sample
a5ca923dceb0aee349e59666f287352d18f9dc79234fbe02d935ad2ccc8cdfc0.exe
Resource
win10v2004-20221111-en
General
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Target
a5ca923dceb0aee349e59666f287352d18f9dc79234fbe02d935ad2ccc8cdfc0.exe
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Size
172KB
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MD5
1e149467daa9277f9a2e36ad1be60090
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SHA1
4561d52a35b80e9634633a30a6d55ebf429fd368
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SHA256
a5ca923dceb0aee349e59666f287352d18f9dc79234fbe02d935ad2ccc8cdfc0
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SHA512
d55acbc094757e15f33e89fbb047205f6421af4a1a4e5f638e2e6e7be1f28d8f5bf789cd0a80852894e0e30f12bbca39ae73bdc8d7cb993a26aefef6fce3c285
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SSDEEP
3072:9YTA7Jhf//HJG3xwQhy2rXSzrpuUODQc:9P1pGBV0FzrTOF
Malware Config
Signatures
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Modifies visiblity of hidden/system files in Explorer 2 TTPs 2 IoCs
Processes:
a5ca923dceb0aee349e59666f287352d18f9dc79234fbe02d935ad2ccc8cdfc0.execoutuit.exedescription ioc process Set value (int) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" a5ca923dceb0aee349e59666f287352d18f9dc79234fbe02d935ad2ccc8cdfc0.exe Set value (int) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" coutuit.exe -
Executes dropped EXE 2 IoCs
Processes:
coutuit.execoutuit.exepid process 1480 coutuit.exe 616 coutuit.exe -
Loads dropped DLL 2 IoCs
Processes:
a5ca923dceb0aee349e59666f287352d18f9dc79234fbe02d935ad2ccc8cdfc0.exepid process 2032 a5ca923dceb0aee349e59666f287352d18f9dc79234fbe02d935ad2ccc8cdfc0.exe 2032 a5ca923dceb0aee349e59666f287352d18f9dc79234fbe02d935ad2ccc8cdfc0.exe -
Adds Run key to start application 2 TTPs 29 IoCs
Processes:
coutuit.exea5ca923dceb0aee349e59666f287352d18f9dc79234fbe02d935ad2ccc8cdfc0.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\coutuit = "C:\\Users\\Admin\\coutuit.exe /l" coutuit.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\coutuit = "C:\\Users\\Admin\\coutuit.exe /k" coutuit.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\coutuit = "C:\\Users\\Admin\\coutuit.exe /h" coutuit.exe Key created \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\ a5ca923dceb0aee349e59666f287352d18f9dc79234fbe02d935ad2ccc8cdfc0.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\coutuit = "C:\\Users\\Admin\\coutuit.exe /m" coutuit.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\coutuit = "C:\\Users\\Admin\\coutuit.exe /p" coutuit.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\coutuit = "C:\\Users\\Admin\\coutuit.exe /n" coutuit.exe Key created \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\ coutuit.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\coutuit = "C:\\Users\\Admin\\coutuit.exe /a" coutuit.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\coutuit = "C:\\Users\\Admin\\coutuit.exe /f" coutuit.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\coutuit = "C:\\Users\\Admin\\coutuit.exe /g" coutuit.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\coutuit = "C:\\Users\\Admin\\coutuit.exe /s" coutuit.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\coutuit = "C:\\Users\\Admin\\coutuit.exe /q" coutuit.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\coutuit = "C:\\Users\\Admin\\coutuit.exe /c" coutuit.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\coutuit = "C:\\Users\\Admin\\coutuit.exe /v" coutuit.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\coutuit = "C:\\Users\\Admin\\coutuit.exe /o" coutuit.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\coutuit = "C:\\Users\\Admin\\coutuit.exe /r" coutuit.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\coutuit = "C:\\Users\\Admin\\coutuit.exe /z" coutuit.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\coutuit = "C:\\Users\\Admin\\coutuit.exe /d" coutuit.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\coutuit = "C:\\Users\\Admin\\coutuit.exe /i" coutuit.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\coutuit = "C:\\Users\\Admin\\coutuit.exe /b" coutuit.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\coutuit = "C:\\Users\\Admin\\coutuit.exe /u" coutuit.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\coutuit = "C:\\Users\\Admin\\coutuit.exe /v" a5ca923dceb0aee349e59666f287352d18f9dc79234fbe02d935ad2ccc8cdfc0.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\coutuit = "C:\\Users\\Admin\\coutuit.exe /y" coutuit.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\coutuit = "C:\\Users\\Admin\\coutuit.exe /t" coutuit.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\coutuit = "C:\\Users\\Admin\\coutuit.exe /j" coutuit.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\coutuit = "C:\\Users\\Admin\\coutuit.exe /e" coutuit.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\coutuit = "C:\\Users\\Admin\\coutuit.exe /w" coutuit.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\coutuit = "C:\\Users\\Admin\\coutuit.exe /x" coutuit.exe -
Maps connected drives based on registry 3 TTPs 4 IoCs
Disk information is often read in order to detect sandboxing environments.
Processes:
coutuit.exea5ca923dceb0aee349e59666f287352d18f9dc79234fbe02d935ad2ccc8cdfc0.exedescription ioc process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum coutuit.exe Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0 coutuit.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum a5ca923dceb0aee349e59666f287352d18f9dc79234fbe02d935ad2ccc8cdfc0.exe Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0 a5ca923dceb0aee349e59666f287352d18f9dc79234fbe02d935ad2ccc8cdfc0.exe -
Drops autorun.inf file 1 TTPs 1 IoCs
Malware can abuse Windows Autorun to spread further via attached volumes.
Processes:
coutuit.exedescription ioc process File opened for modification C:\Users\Admin\c\autorun.inf coutuit.exe -
Suspicious use of SetThreadContext 2 IoCs
Processes:
a5ca923dceb0aee349e59666f287352d18f9dc79234fbe02d935ad2ccc8cdfc0.execoutuit.exedescription pid process target process PID 1488 set thread context of 2032 1488 a5ca923dceb0aee349e59666f287352d18f9dc79234fbe02d935ad2ccc8cdfc0.exe a5ca923dceb0aee349e59666f287352d18f9dc79234fbe02d935ad2ccc8cdfc0.exe PID 1480 set thread context of 616 1480 coutuit.exe coutuit.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
Processes:
a5ca923dceb0aee349e59666f287352d18f9dc79234fbe02d935ad2ccc8cdfc0.execoutuit.exepid process 2032 a5ca923dceb0aee349e59666f287352d18f9dc79234fbe02d935ad2ccc8cdfc0.exe 616 coutuit.exe 616 coutuit.exe 616 coutuit.exe 616 coutuit.exe 616 coutuit.exe 616 coutuit.exe 616 coutuit.exe 616 coutuit.exe 616 coutuit.exe 616 coutuit.exe 616 coutuit.exe 616 coutuit.exe 616 coutuit.exe 616 coutuit.exe 616 coutuit.exe 616 coutuit.exe 616 coutuit.exe 616 coutuit.exe 616 coutuit.exe 616 coutuit.exe 616 coutuit.exe 616 coutuit.exe 616 coutuit.exe 616 coutuit.exe 616 coutuit.exe 616 coutuit.exe 616 coutuit.exe 616 coutuit.exe 616 coutuit.exe 616 coutuit.exe 616 coutuit.exe 616 coutuit.exe 616 coutuit.exe 616 coutuit.exe 616 coutuit.exe 616 coutuit.exe 616 coutuit.exe 616 coutuit.exe 616 coutuit.exe 616 coutuit.exe 616 coutuit.exe 616 coutuit.exe 616 coutuit.exe 616 coutuit.exe 616 coutuit.exe 616 coutuit.exe 616 coutuit.exe 616 coutuit.exe 616 coutuit.exe 616 coutuit.exe 616 coutuit.exe 616 coutuit.exe 616 coutuit.exe 616 coutuit.exe 616 coutuit.exe 616 coutuit.exe 616 coutuit.exe 616 coutuit.exe 616 coutuit.exe 616 coutuit.exe 616 coutuit.exe 616 coutuit.exe 616 coutuit.exe -
Suspicious use of SetWindowsHookEx 4 IoCs
Processes:
a5ca923dceb0aee349e59666f287352d18f9dc79234fbe02d935ad2ccc8cdfc0.exea5ca923dceb0aee349e59666f287352d18f9dc79234fbe02d935ad2ccc8cdfc0.execoutuit.execoutuit.exepid process 1488 a5ca923dceb0aee349e59666f287352d18f9dc79234fbe02d935ad2ccc8cdfc0.exe 2032 a5ca923dceb0aee349e59666f287352d18f9dc79234fbe02d935ad2ccc8cdfc0.exe 1480 coutuit.exe 616 coutuit.exe -
Suspicious use of WriteProcessMemory 24 IoCs
Processes:
a5ca923dceb0aee349e59666f287352d18f9dc79234fbe02d935ad2ccc8cdfc0.exea5ca923dceb0aee349e59666f287352d18f9dc79234fbe02d935ad2ccc8cdfc0.execoutuit.exedescription pid process target process PID 1488 wrote to memory of 2032 1488 a5ca923dceb0aee349e59666f287352d18f9dc79234fbe02d935ad2ccc8cdfc0.exe a5ca923dceb0aee349e59666f287352d18f9dc79234fbe02d935ad2ccc8cdfc0.exe PID 1488 wrote to memory of 2032 1488 a5ca923dceb0aee349e59666f287352d18f9dc79234fbe02d935ad2ccc8cdfc0.exe a5ca923dceb0aee349e59666f287352d18f9dc79234fbe02d935ad2ccc8cdfc0.exe PID 1488 wrote to memory of 2032 1488 a5ca923dceb0aee349e59666f287352d18f9dc79234fbe02d935ad2ccc8cdfc0.exe a5ca923dceb0aee349e59666f287352d18f9dc79234fbe02d935ad2ccc8cdfc0.exe PID 1488 wrote to memory of 2032 1488 a5ca923dceb0aee349e59666f287352d18f9dc79234fbe02d935ad2ccc8cdfc0.exe a5ca923dceb0aee349e59666f287352d18f9dc79234fbe02d935ad2ccc8cdfc0.exe PID 1488 wrote to memory of 2032 1488 a5ca923dceb0aee349e59666f287352d18f9dc79234fbe02d935ad2ccc8cdfc0.exe a5ca923dceb0aee349e59666f287352d18f9dc79234fbe02d935ad2ccc8cdfc0.exe PID 1488 wrote to memory of 2032 1488 a5ca923dceb0aee349e59666f287352d18f9dc79234fbe02d935ad2ccc8cdfc0.exe a5ca923dceb0aee349e59666f287352d18f9dc79234fbe02d935ad2ccc8cdfc0.exe PID 1488 wrote to memory of 2032 1488 a5ca923dceb0aee349e59666f287352d18f9dc79234fbe02d935ad2ccc8cdfc0.exe a5ca923dceb0aee349e59666f287352d18f9dc79234fbe02d935ad2ccc8cdfc0.exe PID 1488 wrote to memory of 2032 1488 a5ca923dceb0aee349e59666f287352d18f9dc79234fbe02d935ad2ccc8cdfc0.exe a5ca923dceb0aee349e59666f287352d18f9dc79234fbe02d935ad2ccc8cdfc0.exe PID 1488 wrote to memory of 2032 1488 a5ca923dceb0aee349e59666f287352d18f9dc79234fbe02d935ad2ccc8cdfc0.exe a5ca923dceb0aee349e59666f287352d18f9dc79234fbe02d935ad2ccc8cdfc0.exe PID 1488 wrote to memory of 2032 1488 a5ca923dceb0aee349e59666f287352d18f9dc79234fbe02d935ad2ccc8cdfc0.exe a5ca923dceb0aee349e59666f287352d18f9dc79234fbe02d935ad2ccc8cdfc0.exe PID 2032 wrote to memory of 1480 2032 a5ca923dceb0aee349e59666f287352d18f9dc79234fbe02d935ad2ccc8cdfc0.exe coutuit.exe PID 2032 wrote to memory of 1480 2032 a5ca923dceb0aee349e59666f287352d18f9dc79234fbe02d935ad2ccc8cdfc0.exe coutuit.exe PID 2032 wrote to memory of 1480 2032 a5ca923dceb0aee349e59666f287352d18f9dc79234fbe02d935ad2ccc8cdfc0.exe coutuit.exe PID 2032 wrote to memory of 1480 2032 a5ca923dceb0aee349e59666f287352d18f9dc79234fbe02d935ad2ccc8cdfc0.exe coutuit.exe PID 1480 wrote to memory of 616 1480 coutuit.exe coutuit.exe PID 1480 wrote to memory of 616 1480 coutuit.exe coutuit.exe PID 1480 wrote to memory of 616 1480 coutuit.exe coutuit.exe PID 1480 wrote to memory of 616 1480 coutuit.exe coutuit.exe PID 1480 wrote to memory of 616 1480 coutuit.exe coutuit.exe PID 1480 wrote to memory of 616 1480 coutuit.exe coutuit.exe PID 1480 wrote to memory of 616 1480 coutuit.exe coutuit.exe PID 1480 wrote to memory of 616 1480 coutuit.exe coutuit.exe PID 1480 wrote to memory of 616 1480 coutuit.exe coutuit.exe PID 1480 wrote to memory of 616 1480 coutuit.exe coutuit.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\a5ca923dceb0aee349e59666f287352d18f9dc79234fbe02d935ad2ccc8cdfc0.exe"C:\Users\Admin\AppData\Local\Temp\a5ca923dceb0aee349e59666f287352d18f9dc79234fbe02d935ad2ccc8cdfc0.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\a5ca923dceb0aee349e59666f287352d18f9dc79234fbe02d935ad2ccc8cdfc0.exe742⤵
- Modifies visiblity of hidden/system files in Explorer
- Loads dropped DLL
- Adds Run key to start application
- Maps connected drives based on registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\coutuit.exe"C:\Users\Admin\coutuit.exe"3⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\coutuit.exe744⤵
- Modifies visiblity of hidden/system files in Explorer
- Executes dropped EXE
- Adds Run key to start application
- Maps connected drives based on registry
- Drops autorun.inf file
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
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Downloads
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C:\Users\Admin\coutuit.exeFilesize
172KB
MD51e149467daa9277f9a2e36ad1be60090
SHA14561d52a35b80e9634633a30a6d55ebf429fd368
SHA256a5ca923dceb0aee349e59666f287352d18f9dc79234fbe02d935ad2ccc8cdfc0
SHA512d55acbc094757e15f33e89fbb047205f6421af4a1a4e5f638e2e6e7be1f28d8f5bf789cd0a80852894e0e30f12bbca39ae73bdc8d7cb993a26aefef6fce3c285
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C:\Users\Admin\coutuit.exeFilesize
172KB
MD51e149467daa9277f9a2e36ad1be60090
SHA14561d52a35b80e9634633a30a6d55ebf429fd368
SHA256a5ca923dceb0aee349e59666f287352d18f9dc79234fbe02d935ad2ccc8cdfc0
SHA512d55acbc094757e15f33e89fbb047205f6421af4a1a4e5f638e2e6e7be1f28d8f5bf789cd0a80852894e0e30f12bbca39ae73bdc8d7cb993a26aefef6fce3c285
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C:\Users\Admin\coutuit.exeFilesize
172KB
MD51e149467daa9277f9a2e36ad1be60090
SHA14561d52a35b80e9634633a30a6d55ebf429fd368
SHA256a5ca923dceb0aee349e59666f287352d18f9dc79234fbe02d935ad2ccc8cdfc0
SHA512d55acbc094757e15f33e89fbb047205f6421af4a1a4e5f638e2e6e7be1f28d8f5bf789cd0a80852894e0e30f12bbca39ae73bdc8d7cb993a26aefef6fce3c285
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\Users\Admin\coutuit.exeFilesize
172KB
MD51e149467daa9277f9a2e36ad1be60090
SHA14561d52a35b80e9634633a30a6d55ebf429fd368
SHA256a5ca923dceb0aee349e59666f287352d18f9dc79234fbe02d935ad2ccc8cdfc0
SHA512d55acbc094757e15f33e89fbb047205f6421af4a1a4e5f638e2e6e7be1f28d8f5bf789cd0a80852894e0e30f12bbca39ae73bdc8d7cb993a26aefef6fce3c285
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\Users\Admin\coutuit.exeFilesize
172KB
MD51e149467daa9277f9a2e36ad1be60090
SHA14561d52a35b80e9634633a30a6d55ebf429fd368
SHA256a5ca923dceb0aee349e59666f287352d18f9dc79234fbe02d935ad2ccc8cdfc0
SHA512d55acbc094757e15f33e89fbb047205f6421af4a1a4e5f638e2e6e7be1f28d8f5bf789cd0a80852894e0e30f12bbca39ae73bdc8d7cb993a26aefef6fce3c285
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memory/616-81-0x0000000000400000-0x0000000000413000-memory.dmpFilesize
76KB
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memory/616-78-0x0000000000400000-0x0000000000413000-memory.dmpFilesize
76KB
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memory/616-72-0x00000000004010EC-mapping.dmp
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memory/1480-66-0x0000000000000000-mapping.dmp
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memory/2032-56-0x0000000000400000-0x0000000000413000-memory.dmpFilesize
76KB
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memory/2032-63-0x0000000076681000-0x0000000076683000-memory.dmpFilesize
8KB
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memory/2032-62-0x0000000000400000-0x0000000000413000-memory.dmpFilesize
76KB
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memory/2032-59-0x0000000000400000-0x0000000000413000-memory.dmpFilesize
76KB
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memory/2032-80-0x0000000000400000-0x0000000000413000-memory.dmpFilesize
76KB
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memory/2032-57-0x00000000004010EC-mapping.dmp