Analysis
- max time kernel
148s - max time network
150s - platform
windows10-2004_x64 - resource
win10v2004-20240426-en - resource tags
- submitted
03/06/2024, 09:46
General
- Target 2024-06-03_f3ca2c145e9acc24474cb7017d1ed7fd_cryptolocker.exe
- Size 40KB
- Sample240603-lrt7kaae2s
- SHA256 3c8ee2dbf3fbc84ec15d8d52043b2fbedd703e6af6de4f9626fd889037c09bee
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
- Detection of Cryptolocker Samples 4 IoCs
- UPX dump on OEP (original entry point) 4 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 4 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\2024-06-03_f3ca2c145e9acc24474cb7017d1ed7fd_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-06-03_f3ca2c145e9acc24474cb7017d1ed7fd_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/1864-26-0x0000000000490000-0x0000000000496000-memory.dmp
memory/1864-27-0x0000000000500000-0x0000000000510000-memory.dmp
memory/4408-0-0x0000000000500000-0x0000000000510000-memory.dmp
memory/4408-1-0x00000000004D0000-0x00000000004D6000-memory.dmp
memory/4408-2-0x0000000002100000-0x0000000002106000-memory.dmp
memory/4408-9-0x00000000004D0000-0x00000000004D6000-memory.dmp
memory/4408-25-0x0000000000500000-0x0000000000510000-memory.dmp