Analysis
- max time kernel
150s - max time network
146s - platform
windows10-2004_x64 - resource
win10v2004-20240611-en - resource tags
- submitted
13/06/2024, 00:42
General
- Target 2024-06-13_1e870010e0dc53ff0eda0a082bf8d547_cryptolocker.exe
- Size 34KB
- Sample240613-a2fldaxela
- SHA256 2b88e4be5ad478a2e61d3c9d0a015b833f4a74b822610230db41f26c72bf6983
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 1 IoCs
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Executes dropped EXE 1 IoCs
- 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_1e870010e0dc53ff0eda0a082bf8d547_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-06-13_1e870010e0dc53ff0eda0a082bf8d547_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\retln.exe"C:\Users\Admin\AppData\Local\Temp\retln.exe"2⤵
- Executes dropped EXE
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
retln.exe
memory/4572-0-0x0000000002EA0000-0x0000000002EA6000-memory.dmp
memory/4572-1-0x0000000000400000-0x0000000000406000-memory.dmp
memory/4572-8-0x0000000002EA0000-0x0000000002EA6000-memory.dmp
memory/5004-25-0x0000000002D60000-0x0000000002D66000-memory.dmp