Analysis
- max time kernel
148s - max time network
155s - platform
windows10-2004_x64 - resource
win10v2004-20231215-en - resource tags
- submitted
01/02/2024, 09:30
General
- Target 2024-02-01_bc92b9443545983e7dea290af55a7280_cryptolocker.exe
- Size 115KB
- Sample240201-lgt4tabchl
- SHA256 7c51e47c37e51d9f5c31f79c3f6a889dd604d7ed9677f90d46f907684e070f81
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
- Detection of Cryptolocker Samples 4 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
- UPX packed file 4 IoCs
Detects executables packed with UPX/modified UPX open source packer.
- 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\2024-02-01_bc92b9443545983e7dea290af55a7280_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-02-01_bc92b9443545983e7dea290af55a7280_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/4256-0-0x0000000000500000-0x0000000000510000-memory.dmp
memory/4256-1-0x0000000000660000-0x0000000000666000-memory.dmp
memory/4256-2-0x0000000000660000-0x0000000000666000-memory.dmp
memory/4256-3-0x0000000002100000-0x0000000002106000-memory.dmp
memory/4256-17-0x0000000000500000-0x0000000000510000-memory.dmp
memory/5060-25-0x00000000005A0000-0x00000000005A6000-memory.dmp
memory/5060-19-0x00000000005D0000-0x00000000005D6000-memory.dmp
memory/5060-26-0x0000000000500000-0x0000000000510000-memory.dmp