Analysis
- max time kernel
149s - max time network
151s - platform
windows10-2004_x64 - resource
win10v2004-20240226-en - resource tags
- submitted
12/03/2024, 01:59
General
- Target 2024-03-12_d0cfd2f2743af7e4b957a19070947dc6_cryptolocker.exe
- Size 78KB
- Sample240312-cegahaeg85
- SHA256 2d436efba394f856d9c7feaa7296331b8520b04c777018355a5ec794fbd39009
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\2024-03-12_d0cfd2f2743af7e4b957a19070947dc6_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-03-12_d0cfd2f2743af7e4b957a19070947dc6_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\misid.exe"C:\Users\Admin\AppData\Local\Temp\misid.exe"2⤵
- Executes dropped EXE
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
misid.exe
memory/1160-17-0x0000000000500000-0x0000000000510000-memory.dmp
memory/1160-20-0x00000000004F0000-0x00000000004F6000-memory.dmp
memory/1160-22-0x00000000004D0000-0x00000000004D6000-memory.dmp
memory/1160-27-0x0000000000500000-0x0000000000510000-memory.dmp
memory/1904-0-0x0000000000500000-0x0000000000510000-memory.dmp
memory/1904-1-0x0000000000690000-0x0000000000696000-memory.dmp
memory/1904-2-0x0000000000690000-0x0000000000696000-memory.dmp
memory/1904-3-0x00000000006B0000-0x00000000006B6000-memory.dmp
memory/1904-18-0x0000000000500000-0x0000000000510000-memory.dmp