Analysis
- max time kernel
150s - max time network
150s - platform
windows10-2004_x64 - resource
win10v2004-20240508-en - resource tags
- submitted
14/06/2024, 02:41
General
- Target 2024-06-14_5db45fad7280c74d13dc3b9103e2818c_cryptolocker.exe
- Size 42KB
- Sample240614-c6e7hssdma
- SHA256 9b9e4cf45270bd2ee47d0e1df1c769e1d37d63111565919766c9ec25fb945b56
Malware Config
Signatures
- Detection of CryptoLocker Variants 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\2024-06-14_5db45fad7280c74d13dc3b9103e2818c_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-06-14_5db45fad7280c74d13dc3b9103e2818c_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\hasfj.exe"C:\Users\Admin\AppData\Local\Temp\hasfj.exe"2⤵
- Executes dropped EXE
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
hasfj.exe
memory/1020-0-0x0000000008000000-0x000000000800F000-memory.dmp
memory/1020-1-0x0000000002240000-0x0000000002246000-memory.dmp
memory/1020-2-0x00000000022B0000-0x00000000022B6000-memory.dmp
memory/1020-9-0x0000000002240000-0x0000000002246000-memory.dmp
memory/1020-18-0x0000000008000000-0x000000000800F000-memory.dmp
memory/1192-17-0x0000000008000000-0x000000000800F000-memory.dmp
memory/1192-20-0x0000000002180000-0x0000000002186000-memory.dmp
memory/1192-26-0x0000000000670000-0x0000000000676000-memory.dmp
memory/1192-27-0x0000000008000000-0x000000000800F000-memory.dmp