Analysis
- max time kernel
150s - max time network
153s - platform
windows10-2004_x64 - resource
win10v2004-20240221-en - resource tags
- submitted
22/02/2024, 21:24
General
- Target 2024-02-22_10c24dcc69a62127ce58d390091a317e_cryptolocker.exe
- Size 31KB
- Sample240222-z84dfsfc6s
- SHA256 1306752b59ffdb15f4a3cd61c54cbc400d71207cee150dd67dd45e90987a7932
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_10c24dcc69a62127ce58d390091a317e_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-02-22_10c24dcc69a62127ce58d390091a317e_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
Loading Replay Monitor...
Downloads
retln.exe
memory/2792-21-0x00000000020D0000-0x00000000020D6000-memory.dmp
memory/4724-0-0x0000000002250000-0x0000000002256000-memory.dmp
memory/4724-1-0x0000000002250000-0x0000000002256000-memory.dmp
memory/4724-2-0x0000000000400000-0x0000000000406000-memory.dmp