Analysis
- max time kernel
150s - max time network
152s - platform
windows10-2004_x64 - resource
win10v2004-20240221-en - resource tags
- submitted
24/02/2024, 14:01
General
- Target 2024-02-24_09b96ca49f97ca4b7e09451f1723cdb2_cryptolocker.exe
- Size 42KB
- Sample240224-rbh29aee4w
- SHA256 083149f31df0cadfab69e6a49f5bc311ad4eb815f8557c2fe2ccb8107c57168f
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\2024-02-24_09b96ca49f97ca4b7e09451f1723cdb2_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-02-24_09b96ca49f97ca4b7e09451f1723cdb2_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/2056-22-0x0000000002210000-0x0000000002216000-memory.dmp
memory/5080-0-0x00000000022C0000-0x00000000022C6000-memory.dmp
memory/5080-1-0x00000000022C0000-0x00000000022C6000-memory.dmp
memory/5080-2-0x0000000000400000-0x0000000000406000-memory.dmp