Analysis
- max time kernel
148s - max time network
152s - platform
windows10-2004_x64 - resource
win10v2004-20240426-en - resource tags
- submitted
10/06/2024, 21:31
General
- Target 2024-06-10_4d73723299ff2cdd5b78059ca375c2b8_cryptolocker.exe
- Size 70KB
- Sample240610-1danbs1dmf
- SHA256 391d663640844512918c5b3b2bf4b60024ba9dfbaa723c412973bdecaf0a51d0
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\2024-06-10_4d73723299ff2cdd5b78059ca375c2b8_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-06-10_4d73723299ff2cdd5b78059ca375c2b8_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/1800-0-0x0000000000500000-0x000000000050F000-memory.dmp
memory/1800-1-0x00000000004D0000-0x00000000004D6000-memory.dmp
memory/1800-2-0x00000000004F0000-0x00000000004F6000-memory.dmp
memory/1800-9-0x00000000004D0000-0x00000000004D6000-memory.dmp
memory/1800-18-0x0000000000500000-0x000000000050F000-memory.dmp
memory/3752-19-0x0000000000500000-0x000000000050F000-memory.dmp
memory/3752-21-0x0000000001FF0000-0x0000000001FF6000-memory.dmp
memory/3752-27-0x00000000005B0000-0x00000000005B6000-memory.dmp
memory/3752-28-0x0000000000500000-0x000000000050F000-memory.dmp