Analysis
- max time kernel
148s - max time network
152s - platform
windows10-2004_x64 - resource
win10v2004-20240426-en - resource tags
- submitted
03/06/2024, 07:33
General
- Target 2024-06-03_440bf88426e14738b779856847f12aa1_cryptolocker.exe
- Size 57KB
- Sample240603-jdmt8ahd35
- SHA256 4dd57b52cf04285617248f2a690790c74fc7d69592aac60a3e90679871beb09b
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 2 IoCs
- UPX dump on OEP (original entry point) 2 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 2 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\2024-06-03_440bf88426e14738b779856847f12aa1_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-06-03_440bf88426e14738b779856847f12aa1_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\gewos.exe"C:\Users\Admin\AppData\Local\Temp\gewos.exe"2⤵
- Executes dropped EXE
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
gewos.exe
memory/888-0-0x0000000000400000-0x000000000040E000-memory.dmp
memory/888-1-0x0000000002EA0000-0x0000000002EA6000-memory.dmp
memory/888-9-0x0000000002EA0000-0x0000000002EA6000-memory.dmp
memory/888-2-0x0000000000400000-0x0000000000406000-memory.dmp
memory/3440-26-0x0000000000750000-0x0000000000756000-memory.dmp