Analysis
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max time kernel
152s -
max time network
52s -
platform
windows7_x64 -
resource
win7-20221111-en -
resource tags
arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system -
submitted
29-11-2022 03:18
Static task
static1
Behavioral task
behavioral1
Sample
a2ca1f29e154ba98b589967c2ca5fcf5e96f0f3c0e1a6fbe740e0d29b907fa91.exe
Resource
win7-20221111-en
windows7-x64
8 signatures
150 seconds
Behavioral task
behavioral2
Sample
a2ca1f29e154ba98b589967c2ca5fcf5e96f0f3c0e1a6fbe740e0d29b907fa91.exe
Resource
win10v2004-20220812-en
windows10-2004-x64
8 signatures
150 seconds
General
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Target
a2ca1f29e154ba98b589967c2ca5fcf5e96f0f3c0e1a6fbe740e0d29b907fa91.exe
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Size
140KB
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MD5
d06a88f85f14fa2951739cc0b565ac52
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SHA1
8d6b94956c7cf0787c6043a3d372f98c3b55307e
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SHA256
a2ca1f29e154ba98b589967c2ca5fcf5e96f0f3c0e1a6fbe740e0d29b907fa91
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SHA512
c6f5561d1554201331e98fac4045d50f72b89c3b2defefcb56e694ddc762894b95ba32a496c137ff6fc9f712fad9140964eba0833679d57ca14d092d600402bd
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SSDEEP
1536:YnJFc6Xg/VwssUfw5GZS5u61rC634cmY77UsMJXGoQDnzqLcTJLO01DvqlWgB0gZ:mJFc6QtRLYt77UsMJXGoFDwfG
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-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" a2ca1f29e154ba98b589967c2ca5fcf5e96f0f3c0e1a6fbe740e0d29b907fa91.exe Set value (int) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" ctdol.exe -
Executes dropped EXE 1 IoCs
pid Process 1344 ctdol.exe -
Loads dropped DLL 2 IoCs
pid Process 1348 a2ca1f29e154ba98b589967c2ca5fcf5e96f0f3c0e1a6fbe740e0d29b907fa91.exe 1348 a2ca1f29e154ba98b589967c2ca5fcf5e96f0f3c0e1a6fbe740e0d29b907fa91.exe -
Adds Run key to start application 2 TTPs 28 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\ctdol = "C:\\Users\\Admin\\ctdol.exe /v" ctdol.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\ctdol = "C:\\Users\\Admin\\ctdol.exe /w" ctdol.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\ctdol = "C:\\Users\\Admin\\ctdol.exe /p" a2ca1f29e154ba98b589967c2ca5fcf5e96f0f3c0e1a6fbe740e0d29b907fa91.exe Key created \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\ ctdol.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\ctdol = "C:\\Users\\Admin\\ctdol.exe /e" ctdol.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\ctdol = "C:\\Users\\Admin\\ctdol.exe /j" ctdol.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\ctdol = "C:\\Users\\Admin\\ctdol.exe /i" ctdol.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\ctdol = "C:\\Users\\Admin\\ctdol.exe /h" ctdol.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\ctdol = "C:\\Users\\Admin\\ctdol.exe /x" ctdol.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\ctdol = "C:\\Users\\Admin\\ctdol.exe /l" ctdol.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\ctdol = "C:\\Users\\Admin\\ctdol.exe /p" ctdol.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\ctdol = "C:\\Users\\Admin\\ctdol.exe /f" ctdol.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\ctdol = "C:\\Users\\Admin\\ctdol.exe /g" ctdol.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\ctdol = "C:\\Users\\Admin\\ctdol.exe /a" ctdol.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\ctdol = "C:\\Users\\Admin\\ctdol.exe /d" ctdol.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\ctdol = "C:\\Users\\Admin\\ctdol.exe /u" ctdol.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\ctdol = "C:\\Users\\Admin\\ctdol.exe /z" ctdol.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\ctdol = "C:\\Users\\Admin\\ctdol.exe /k" ctdol.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\ctdol = "C:\\Users\\Admin\\ctdol.exe /r" ctdol.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\ctdol = "C:\\Users\\Admin\\ctdol.exe /y" ctdol.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\ctdol = "C:\\Users\\Admin\\ctdol.exe /s" ctdol.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\ctdol = "C:\\Users\\Admin\\ctdol.exe /m" ctdol.exe Key created \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\ a2ca1f29e154ba98b589967c2ca5fcf5e96f0f3c0e1a6fbe740e0d29b907fa91.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\ctdol = "C:\\Users\\Admin\\ctdol.exe /t" ctdol.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\ctdol = "C:\\Users\\Admin\\ctdol.exe /o" ctdol.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\ctdol = "C:\\Users\\Admin\\ctdol.exe /n" ctdol.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\ctdol = "C:\\Users\\Admin\\ctdol.exe /c" ctdol.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\ctdol = "C:\\Users\\Admin\\ctdol.exe /b" ctdol.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 1348 a2ca1f29e154ba98b589967c2ca5fcf5e96f0f3c0e1a6fbe740e0d29b907fa91.exe 1344 ctdol.exe 1344 ctdol.exe 1344 ctdol.exe 1344 ctdol.exe 1344 ctdol.exe 1344 ctdol.exe 1344 ctdol.exe 1344 ctdol.exe 1344 ctdol.exe 1344 ctdol.exe 1344 ctdol.exe 1344 ctdol.exe 1344 ctdol.exe 1344 ctdol.exe 1344 ctdol.exe 1344 ctdol.exe 1344 ctdol.exe 1344 ctdol.exe 1344 ctdol.exe 1344 ctdol.exe 1344 ctdol.exe 1344 ctdol.exe 1344 ctdol.exe 1344 ctdol.exe 1344 ctdol.exe 1344 ctdol.exe 1344 ctdol.exe 1344 ctdol.exe 1344 ctdol.exe 1344 ctdol.exe 1344 ctdol.exe 1344 ctdol.exe 1344 ctdol.exe 1344 ctdol.exe 1344 ctdol.exe 1344 ctdol.exe 1344 ctdol.exe 1344 ctdol.exe 1344 ctdol.exe 1344 ctdol.exe 1344 ctdol.exe 1344 ctdol.exe 1344 ctdol.exe 1344 ctdol.exe 1344 ctdol.exe 1344 ctdol.exe 1344 ctdol.exe 1344 ctdol.exe 1344 ctdol.exe 1344 ctdol.exe 1344 ctdol.exe 1344 ctdol.exe 1344 ctdol.exe 1344 ctdol.exe 1344 ctdol.exe 1344 ctdol.exe 1344 ctdol.exe 1344 ctdol.exe 1344 ctdol.exe 1344 ctdol.exe 1344 ctdol.exe 1344 ctdol.exe 1344 ctdol.exe -
Suspicious use of SetWindowsHookEx 4 IoCs
pid Process 1348 a2ca1f29e154ba98b589967c2ca5fcf5e96f0f3c0e1a6fbe740e0d29b907fa91.exe 1348 a2ca1f29e154ba98b589967c2ca5fcf5e96f0f3c0e1a6fbe740e0d29b907fa91.exe 1344 ctdol.exe 1344 ctdol.exe -
Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 1348 wrote to memory of 1344 1348 a2ca1f29e154ba98b589967c2ca5fcf5e96f0f3c0e1a6fbe740e0d29b907fa91.exe 28 PID 1348 wrote to memory of 1344 1348 a2ca1f29e154ba98b589967c2ca5fcf5e96f0f3c0e1a6fbe740e0d29b907fa91.exe 28 PID 1348 wrote to memory of 1344 1348 a2ca1f29e154ba98b589967c2ca5fcf5e96f0f3c0e1a6fbe740e0d29b907fa91.exe 28 PID 1348 wrote to memory of 1344 1348 a2ca1f29e154ba98b589967c2ca5fcf5e96f0f3c0e1a6fbe740e0d29b907fa91.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\a2ca1f29e154ba98b589967c2ca5fcf5e96f0f3c0e1a6fbe740e0d29b907fa91.exe"C:\Users\Admin\AppData\Local\Temp\a2ca1f29e154ba98b589967c2ca5fcf5e96f0f3c0e1a6fbe740e0d29b907fa91.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:1348 -
C:\Users\Admin\ctdol.exe"C:\Users\Admin\ctdol.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:1344
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
140KB
MD53e6dc07ca61376ac31d604cc71f39102
SHA168cd9d5005e56ca945404195d869abad36b09939
SHA2564871462caac6bc2b3b13745148b13601507f5073091d12bf7e01244912d114c8
SHA512b57151006f5752826d838394f8e5f39be5b0ba3bf27cf20df132d571e820895da1abe919f7ec2a95e803a69a48447508a076c8e6312c5b46ef292ffbce4c1d33
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Filesize
140KB
MD53e6dc07ca61376ac31d604cc71f39102
SHA168cd9d5005e56ca945404195d869abad36b09939
SHA2564871462caac6bc2b3b13745148b13601507f5073091d12bf7e01244912d114c8
SHA512b57151006f5752826d838394f8e5f39be5b0ba3bf27cf20df132d571e820895da1abe919f7ec2a95e803a69a48447508a076c8e6312c5b46ef292ffbce4c1d33
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Filesize
140KB
MD53e6dc07ca61376ac31d604cc71f39102
SHA168cd9d5005e56ca945404195d869abad36b09939
SHA2564871462caac6bc2b3b13745148b13601507f5073091d12bf7e01244912d114c8
SHA512b57151006f5752826d838394f8e5f39be5b0ba3bf27cf20df132d571e820895da1abe919f7ec2a95e803a69a48447508a076c8e6312c5b46ef292ffbce4c1d33
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Filesize
140KB
MD53e6dc07ca61376ac31d604cc71f39102
SHA168cd9d5005e56ca945404195d869abad36b09939
SHA2564871462caac6bc2b3b13745148b13601507f5073091d12bf7e01244912d114c8
SHA512b57151006f5752826d838394f8e5f39be5b0ba3bf27cf20df132d571e820895da1abe919f7ec2a95e803a69a48447508a076c8e6312c5b46ef292ffbce4c1d33