Analysis
- max time kernel
150s - max time network
150s - platform
windows10-2004_x64 - resource
win10v2004-20240508-en - resource tags
- submitted
13/06/2024, 03:50
General
- Target 2024-06-13_c9c54e83e6a8b9634c3feeb0a5086b7e_cryptolocker.exe
- Size 81KB
- Sample240613-ed5b2sxaql
- SHA256 5494d9ce1e8ce8bfea30552a34281d4fa5c28fba0b4cb831efa20e4db01d7feb
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
- Detection of Cryptolocker Samples 4 IoCs
- UPX dump on OEP (original entry point) 4 IoCs
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Executes dropped EXE 1 IoCs
- UPX packed file 4 IoCs
Detects executables packed with UPX/modified UPX open source packer.
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Suspicious use of WriteProcessMemory 3 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\2024-06-13_c9c54e83e6a8b9634c3feeb0a5086b7e_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-06-13_c9c54e83e6a8b9634c3feeb0a5086b7e_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\misid.exe"C:\Users\Admin\AppData\Local\Temp\misid.exe"2⤵
- Executes dropped EXE
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
misid.exe
memory/4040-19-0x0000000002070000-0x0000000002076000-memory.dmp
memory/4040-25-0x0000000000660000-0x0000000000666000-memory.dmp
memory/4040-26-0x0000000000500000-0x0000000000510000-memory.dmp
memory/4144-0-0x0000000000500000-0x0000000000510000-memory.dmp
memory/4144-1-0x00000000004E0000-0x00000000004E6000-memory.dmp
memory/4144-3-0x0000000000590000-0x0000000000596000-memory.dmp
memory/4144-9-0x00000000004E0000-0x00000000004E6000-memory.dmp
memory/4144-17-0x0000000000500000-0x0000000000510000-memory.dmp