Analysis
- max time kernel
151s - max time network
152s - platform
windows10-2004_x64 - resource
win10v2004-20240221-en - resource tags
- submitted
22/02/2024, 17:29
General
- Target 2024-02-22_29a3a1b942cf357f9fb020aaeab9d6ed_cryptolocker.exe
- Size 31KB
- Sample240222-v218asdd98
- SHA256 25651b34571c6300baaf1a24459156a79a296e0c0aeb92c4eb96cd463fee2bb5
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\2024-02-22_29a3a1b942cf357f9fb020aaeab9d6ed_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-02-22_29a3a1b942cf357f9fb020aaeab9d6ed_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/1968-0-0x0000000002350000-0x0000000002356000-memory.dmp
memory/1968-1-0x0000000002350000-0x0000000002356000-memory.dmp
memory/1968-2-0x0000000000400000-0x0000000000406000-memory.dmp
memory/2480-19-0x0000000000530000-0x0000000000536000-memory.dmp