Analysis
- max time kernel
159s - max time network
172s - platform
windows10-2004_x64 - resource
win10v2004-20240226-en - resource tags
- submitted
06/03/2024, 00:46
General
- Target 2024-03-06_4a42e0431127a0e62be18f5754c7b129_cryptolocker.exe
- Size 32KB
- Sample240306-a4xyfafd42
- SHA256 d33478106776d91ce9c16eeb1c93878c6d30d1efb5ba1e08ea52820e5fdd38bf
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
- Detection of Cryptolocker Samples 2 IoCs
- UPX dump on OEP (original entry point) 4 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\2024-03-06_4a42e0431127a0e62be18f5754c7b129_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-03-06_4a42e0431127a0e62be18f5754c7b129_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
asih.exe
memory/1532-19-0x00000000006E0000-0x00000000006E6000-memory.dmp
memory/1532-21-0x00000000006C0000-0x00000000006C6000-memory.dmp
memory/1532-26-0x0000000000500000-0x0000000000510000-memory.dmp
memory/3584-0-0x0000000000500000-0x0000000000510000-memory.dmp
memory/3584-1-0x0000000000740000-0x0000000000746000-memory.dmp
memory/3584-2-0x0000000000740000-0x0000000000746000-memory.dmp
memory/3584-3-0x0000000000760000-0x0000000000766000-memory.dmp
memory/3584-17-0x0000000000500000-0x0000000000510000-memory.dmp