Analysis
- max time kernel
149s - max time network
152s - platform
windows11-21h2_x64 - resource
win11-20260130-en - resource tags
- submitted
21/04/2026, 03:33
General
- Target 2026-04-21_3b9203b67d3b72f6823f614bd841cb4e_cryptolocker_elex.exe
- Size 40KB
- Sample260421-d4hejaa16v
- SHA256 acf1a55d672a20165b109e81bfc49faa5813a7386ee3ff72275e666ccd2aba02
Malware Config
Signatures
- Detection of CryptoLocker Variants 3 IoCs
- Executes dropped EXE 1 IoCs
- 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\2026-04-21_3b9203b67d3b72f6823f614bd841cb4e_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-04-21_3b9203b67d3b72f6823f614bd841cb4e_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/680-20-0x0000000000400000-0x0000000000408000-memory.dmp
memory/680-28-0x0000000000400000-0x0000000000408000-memory.dmp
memory/680-31-0x0000000000400000-0x0000000000408000-memory.dmp
memory/680-30-0x0000000002030000-0x00000000020EB000-memory.dmp
memory/680-41-0x0000000002030000-0x00000000020EB000-memory.dmp
memory/3540-0-0x0000000000404000-0x0000000000405000-memory.dmp
memory/3540-1-0x00000000022C0000-0x00000000022C6000-memory.dmp
memory/3540-2-0x0000000000400000-0x0000000000408000-memory.dmp
memory/3540-3-0x0000000000400000-0x0000000000406000-memory.dmp
memory/3540-19-0x0000000002140000-0x00000000021FB000-memory.dmp