Analysis
- max time kernel
151s - max time network
152s - platform
windows10-2004_x64 - resource
win10v2004-20240221-en - resource tags
- submitted
22/02/2024, 22:45
General
- Target 2024-02-22_f951ec5a685e1ba9d5041a46682f3606_cryptolocker.exe
- Size 38KB
- Sample240222-2pc39sga7s
- SHA256 048fcc7d8cda5d76e448cd478f0983a71f7231a332a1fe6ee85410b09cf676b6
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_f951ec5a685e1ba9d5041a46682f3606_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-02-22_f951ec5a685e1ba9d5041a46682f3606_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/1208-0-0x00000000021E0000-0x00000000021E6000-memory.dmp
memory/1208-1-0x00000000021E0000-0x00000000021E6000-memory.dmp
memory/1208-2-0x0000000000400000-0x0000000000406000-memory.dmp
memory/4372-20-0x00000000005F0000-0x00000000005F6000-memory.dmp