Analysis
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max time kernel
138s -
max time network
161s -
platform
windows10-2004_x64 -
resource
win10v2004-20231215-en -
resource tags
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submitted
18-01-2024 23:16
General
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Target
2024-01-18_b71cef4921e111167b13f6bc696fff6a_cryptolocker.exe
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Size
63KB
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MD5
b71cef4921e111167b13f6bc696fff6a
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SHA1
52b14976e6674344fdfc5dfa1b9b65ef9be51614
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SHA256
c7a3c663bc5268c5bd686dbe93fb933ab569da389392ac72110338464542aaed
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SHA512
7c8cfa6e091e29411e94f5942333003c1f982b775761ef617da098be2299f76400af8b5823f1cbb7cff77eff2b40328b990f5c1de8463876b74c3f684b7b1574
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SSDEEP
1536:P8mnK6QFElP6n+gymddpMOtEvwDpjY6UAX7:1nK6a+qdOOtEvwDpj7
Malware Config
Signatures
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Detection of CryptoLocker Variants 5 IoCs
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Detection of Cryptolocker Samples 5 IoCs
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UPX dump on OEP (original entry point) 5 IoCs
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Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
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Executes dropped EXE 1 IoCs
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UPX packed file 5 IoCs
Detects executables packed with UPX/modified UPX open source packer.
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Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious use of WriteProcessMemory 3 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-01-18_b71cef4921e111167b13f6bc696fff6a_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-01-18_b71cef4921e111167b13f6bc696fff6a_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
64KB
MD5a7cbf13a3d4fe51c8e81328f6e878121
SHA183041fb344dbdecab07c3733c2c24587a09e593f
SHA256359db14cd1c7426bfc644fc40509980738a029314d204daf9d4a82e5fe439fc1
SHA5125e0f5c6bb245f29b865be55f6e1674b6d6a3960545b2ba29566ad5c037a842175ba5ea8db0b384daed058f5c5c21b50e9eda862688262fe9c2240bf516055d6f
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Filesize
60KB
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Filesize
24KB
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Filesize
24KB
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Filesize
24KB
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Filesize
60KB
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Filesize
24KB
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Filesize
24KB
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Filesize
60KB
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Filesize
60KB