Analysis
- max time kernel
151s - max time network
155s - platform
windows10-2004_x64 - resource
win10v2004-20240221-en - resource tags
- submitted
23/02/2024, 09:25
General
- Target 2024-02-23_09d3a990dd83668d4d9b542898b6a068_cryptolocker.exe
- Size 28KB
- Sample240223-ld4h3sef69
- SHA256 3f10149a0cf764ae340d96ce2a15a16bd2a94067540dac6310482c587dad5cb0
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\2024-02-23_09d3a990dd83668d4d9b542898b6a068_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-02-23_09d3a990dd83668d4d9b542898b6a068_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/560-20-0x0000000002050000-0x0000000002056000-memory.dmp
memory/4724-0-0x00000000021D0000-0x00000000021D6000-memory.dmp
memory/4724-1-0x00000000021D0000-0x00000000021D6000-memory.dmp
memory/4724-2-0x0000000000400000-0x0000000000406000-memory.dmp