Analysis
- max time kernel
150s - max time network
151s - platform
windows10-2004_x64 - resource
win10v2004-20240426-en - resource tags
- submitted
09/05/2024, 19:28
General
- Target 2024-05-09_8b64dbb7bfc22185eccfc423a3731ed1_cryptolocker.exe
- Size 33KB
- Sample240509-x6vx7adh65
- SHA256 817f7e5eae09635749b2e21d185416762a22a1eb7256488a8223a20c18984d94
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\2024-05-09_8b64dbb7bfc22185eccfc423a3731ed1_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-05-09_8b64dbb7bfc22185eccfc423a3731ed1_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/1988-0-0x0000000002240000-0x0000000002246000-memory.dmp
memory/1988-2-0x0000000000400000-0x0000000000406000-memory.dmp
memory/1988-8-0x0000000002240000-0x0000000002246000-memory.dmp
memory/3244-25-0x0000000002210000-0x0000000002216000-memory.dmp