Analysis
- max time kernel
148s - max time network
150s - platform
windows10-2004_x64 - resource
win10v2004-20240426-en - resource tags
- submitted
30/05/2024, 03:49
General
- Target 2024-05-30_1a9b6a36073fb9245486f8daba7004d0_cryptolocker.exe
- Size 38KB
- Sample240530-edpxcsdd6y
- SHA256 3dd9605eb612f1b6f0ae02feb07c488e859e9ee5a60439a255a5ca17ead7208b
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\2024-05-30_1a9b6a36073fb9245486f8daba7004d0_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-05-30_1a9b6a36073fb9245486f8daba7004d0_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
Loading Replay Monitor...
Downloads
asih.exe
memory/2328-0-0x0000000000500000-0x0000000000510000-memory.dmp
memory/2328-1-0x0000000000660000-0x0000000000666000-memory.dmp
memory/2328-2-0x00000000006E0000-0x00000000006E6000-memory.dmp
memory/2328-9-0x0000000000660000-0x0000000000666000-memory.dmp
memory/2328-18-0x0000000000500000-0x0000000000510000-memory.dmp
memory/2344-19-0x0000000000500000-0x0000000000510000-memory.dmp
memory/2344-21-0x00000000004F0000-0x00000000004F6000-memory.dmp
memory/2344-27-0x00000000004D0000-0x00000000004D6000-memory.dmp
memory/2344-28-0x0000000000500000-0x0000000000510000-memory.dmp