Analysis
- max time kernel
148s - max time network
157s - platform
windows10-2004_x64 - resource
win10v2004-20240508-en - resource tags
- submitted
03/06/2024, 12:34
General
- Target 2024-06-03_9ccdc0f7e224534fc4a6d9512ba412a9_cryptolocker.exe
- Size 90KB
- Sample240603-przzlaee9z
- SHA256 9368a91d170ad3e7c892c80fdd4ad851e2ca97c2a9a0930fb5dc0a3c258328c2
Malware Config
Signatures
- Detection of CryptoLocker Variants 5 IoCs
- Detection of Cryptolocker Samples 5 IoCs
- UPX dump on OEP (original entry point) 5 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 5 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\2024-06-03_9ccdc0f7e224534fc4a6d9512ba412a9_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-06-03_9ccdc0f7e224534fc4a6d9512ba412a9_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/2240-0-0x0000000000500000-0x0000000000510000-memory.dmp
memory/2240-1-0x00000000005A0000-0x00000000005A6000-memory.dmp
memory/2240-2-0x00000000005D0000-0x00000000005D6000-memory.dmp
memory/2240-9-0x00000000005A0000-0x00000000005A6000-memory.dmp
memory/2240-17-0x0000000000500000-0x0000000000510000-memory.dmp
memory/4740-18-0x0000000000500000-0x0000000000510000-memory.dmp
memory/4740-21-0x00000000004F0000-0x00000000004F6000-memory.dmp
memory/4740-20-0x00000000004D0000-0x00000000004D6000-memory.dmp
memory/4740-27-0x0000000000500000-0x0000000000510000-memory.dmp