Analysis
- max time kernel
150s - max time network
154s - platform
windows10-2004_x64 - resource
win10v2004-20240508-en - resource tags
- submitted
13/06/2024, 00:41
General
- Target 2024-06-13_7878067ed7994ba1d9d8721ab0736f4d_cryptolocker.exe
- Size 63KB
- Sample240613-a14a2sxeka
- SHA256 7d42a648d99b104e902113d9137359ed30f9136038c5c480b2608b83c3b273ec
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_7878067ed7994ba1d9d8721ab0736f4d_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-06-13_7878067ed7994ba1d9d8721ab0736f4d_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/1792-0-0x0000000000500000-0x0000000000510000-memory.dmp
memory/1792-2-0x0000000000760000-0x0000000000766000-memory.dmp
memory/1792-1-0x0000000000740000-0x0000000000746000-memory.dmp
memory/1792-9-0x0000000000740000-0x0000000000746000-memory.dmp
memory/1792-17-0x0000000000500000-0x0000000000510000-memory.dmp
memory/4944-18-0x0000000000500000-0x0000000000510000-memory.dmp
memory/4944-20-0x0000000002060000-0x0000000002066000-memory.dmp
memory/4944-26-0x0000000002150000-0x0000000002156000-memory.dmp
memory/4944-27-0x0000000000500000-0x0000000000510000-memory.dmp