Analysis
- max time kernel
150s - max time network
152s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
- submitted
04/08/2026, 20:39
General
- Target 2026-08-04_36908a9f4c4c2e3c4cf52105bffa1767_cryptolocker_elex.exe
- Size 56KB
- Sample260804-zfdbkazbpf
- SHA256 aaa27c50285211f4572918c03e0f800ba2e8a9c404bf6d08f57f4e7c38a518bb
Malware Config
Signatures
- Detection of CryptoLocker Variants 5 IoCs
- UPX dump on OEP (original entry point) 5 IoCs
- Executes dropped EXE 1 IoCs
- UPX packed file 3 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).
- System Location Discovery: System Language Discovery 1 TTPs 2 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- Suspicious use of WriteProcessMemory 1 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-08-04_36908a9f4c4c2e3c4cf52105bffa1767_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-08-04_36908a9f4c4c2e3c4cf52105bffa1767_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\rewok.exe"C:\Users\Admin\AppData\Local\Temp\rewok.exe"2⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
rewok.exe
memory/4336-21-0x0000000000400000-0x000000000040E000-memory.dmp
memory/4336-23-0x0000000000400000-0x0000000000406000-memory.dmp
memory/4336-29-0x0000000000400000-0x000000000040E000-memory.dmp
memory/4900-0-0x0000000000400000-0x000000000040E000-memory.dmp
memory/4900-1-0x0000000000404000-0x0000000000405000-memory.dmp
memory/4900-2-0x0000000002270000-0x0000000002276000-memory.dmp
memory/4900-3-0x0000000000400000-0x000000000040E000-memory.dmp
memory/4900-4-0x0000000000400000-0x0000000000406000-memory.dmp