Analysis
- max time kernel
148s - max time network
153s - platform
windows10-2004_x64 - resource
win10v2004-20240508-en - resource tags
- submitted
03/06/2024, 00:10
General
- Target 2024-06-02_758ef7da77f8d97181ede49a000a9a70_cryptolocker.exe
- Size 40KB
- Sample240603-af9bkadd56
- SHA256 bb33e05effa5061a5eb3966fa0ee14e63ab5f454c6ada5088d4ab1f84fc0c3c9
Score
9/10
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\2024-06-02_758ef7da77f8d97181ede49a000a9a70_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-06-02_758ef7da77f8d97181ede49a000a9a70_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/836-0-0x0000000000500000-0x0000000000510000-memory.dmp
memory/836-1-0x00000000004E0000-0x00000000004E6000-memory.dmp
memory/836-2-0x0000000000510000-0x0000000000516000-memory.dmp
memory/836-9-0x00000000004E0000-0x00000000004E6000-memory.dmp
memory/836-18-0x0000000000500000-0x0000000000510000-memory.dmp
memory/4176-17-0x0000000000500000-0x0000000000510000-memory.dmp
memory/4176-20-0x0000000002100000-0x0000000002106000-memory.dmp
memory/4176-26-0x0000000000500000-0x0000000000510000-memory.dmp