Analysis
- max time kernel
147s - max time network
150s - platform
windows10-2004_x64 - resource
win10v2004-20240611-en - resource tags
- submitted
13/06/2024, 01:41
General
- Target 2024-06-13_c598dce20b0abe8ea50b50e7369e9830_cryptolocker.exe
- Size 38KB
- Sample240613-b4mcdatbql
- SHA256 259c600d63a2211142e37bfab9d1c34e45a68e753f55dc4d86ab6cb2803f33c7
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\2024-06-13_c598dce20b0abe8ea50b50e7369e9830_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-06-13_c598dce20b0abe8ea50b50e7369e9830_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/1180-0-0x0000000000500000-0x000000000050F000-memory.dmp
memory/1180-1-0x00000000004D0000-0x00000000004D6000-memory.dmp
memory/1180-2-0x00000000004F0000-0x00000000004F6000-memory.dmp
memory/1180-9-0x00000000004D0000-0x00000000004D6000-memory.dmp
memory/1180-18-0x0000000000500000-0x000000000050F000-memory.dmp
memory/1716-17-0x0000000000500000-0x000000000050F000-memory.dmp
memory/1716-20-0x0000000000670000-0x0000000000676000-memory.dmp
memory/1716-21-0x0000000002100000-0x0000000002106000-memory.dmp
memory/1716-27-0x0000000000500000-0x000000000050F000-memory.dmp