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Analysis
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max time kernel
149s -
max time network
155s -
platform
windows10-2004_x64 -
resource
win10v2004-20231215-en -
resource tags
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submitted
22/01/2024, 20:42
General
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Target
2024-01-22_b6d3a15c7a9d43802c6d00d5f9efce78_cryptolocker.exe
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Size
61KB
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MD5
b6d3a15c7a9d43802c6d00d5f9efce78
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SHA1
2efbd7461e3d66a73c7d9d58bdf4a879978e145d
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SHA256
f496934abd6ecfb36af548a2f0c6464adf6c800b5c46b4c4ca916a211fa92b7a
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SHA512
81a99ab3690ca6f42bd841aa5abb803bedaf051c97d2ecc0b629bfb55d97ac36148878e019e3caf642d429ff1dd491f1687a3d3c5cddf75de20a3db79d35c38b
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SSDEEP
1536:P8mnK6QFElP6n+gymddpMOtEvwDpjYibAoS:1nK6a+qdOOtEvwDpj4
Malware Config
Signatures
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Detection of CryptoLocker Variants 4 IoCs
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Detection of Cryptolocker Samples 4 IoCs
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UPX dump on OEP (original entry point) 4 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 4 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\2024-01-22_b6d3a15c7a9d43802c6d00d5f9efce78_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-01-22_b6d3a15c7a9d43802c6d00d5f9efce78_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
61KB
MD57dfb5319ba15cb48c21e6a89ffb6b8e2
SHA10efd1111a1fde66a4b852d080373ad11333e8513
SHA256627b02c72e6c27381eb1210e9034efac8ca4d13d36a8cbb27eb4137f2c835e83
SHA51252c0aea4029d563955ba28da85aed7bfcedb9aa017558e7af19c59450ec44d3c97969b14782be14dcd9eba0e910cadcb05e3af3a21c31333571425289e4eb0c7
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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