Analysis
- max time kernel
148s - max time network
150s - platform
windows10-2004_x64 - resource
win10v2004-20240508-en - resource tags
- submitted
09/06/2024, 07:32
General
- Target 2024-06-09_9db34b4cee6971c03bf44f646ad3fa6b_cryptolocker.exe
- Size 62KB
- Sample240609-jda6esff5s
- SHA256 38d54562bfc0911c7da587f8ce77bace6e873a2dde7e048a6aec38d3b0c34524
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\2024-06-09_9db34b4cee6971c03bf44f646ad3fa6b_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-06-09_9db34b4cee6971c03bf44f646ad3fa6b_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/2792-18-0x0000000000500000-0x000000000050F311-memory.dmp
memory/2792-20-0x0000000000660000-0x0000000000666000-memory.dmp
memory/2792-26-0x00000000004E0000-0x00000000004E6000-memory.dmp
memory/2792-27-0x0000000000500000-0x000000000050F311-memory.dmp
memory/4400-0-0x0000000000500000-0x000000000050F311-memory.dmp
memory/4400-1-0x00000000007B0000-0x00000000007B6000-memory.dmp
memory/4400-2-0x00000000007E0000-0x00000000007E6000-memory.dmp
memory/4400-9-0x00000000007B0000-0x00000000007B6000-memory.dmp
memory/4400-17-0x0000000000500000-0x000000000050F311-memory.dmp