Analysis
- max time kernel
150s - max time network
150s - platform
windows10-2004_x64 - resource
win10v2004-20240508-en - resource tags
- submitted
12/06/2024, 03:51
General
- Target 2024-06-12_ed75b941d66c807035146a4011ea173d_cryptolocker.exe
- Size 37KB
- Sample240612-eergkszgje
- SHA256 b343c108832ae8582e81078d63b912dcbc8422acf2ef3db904b6c3072e924e7f
Malware Config
Signatures
- Detection of CryptoLocker Variants 5 IoCs
- Detection of Cryptolocker Samples 5 IoCs
- UPX dump on OEP (original entry point) 5 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 5 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\2024-06-12_ed75b941d66c807035146a4011ea173d_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-06-12_ed75b941d66c807035146a4011ea173d_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
asih.exe
memory/2472-19-0x0000000000500000-0x000000000050F000-memory.dmp
memory/2472-21-0x0000000002100000-0x0000000002106000-memory.dmp
memory/2472-27-0x00000000020E0000-0x00000000020E6000-memory.dmp
memory/2472-28-0x0000000000500000-0x000000000050F000-memory.dmp
memory/3892-0-0x0000000000500000-0x000000000050F000-memory.dmp
memory/3892-1-0x00000000004D0000-0x00000000004D6000-memory.dmp
memory/3892-2-0x0000000000510000-0x0000000000516000-memory.dmp
memory/3892-9-0x00000000004D0000-0x00000000004D6000-memory.dmp
memory/3892-17-0x0000000000500000-0x000000000050F000-memory.dmp