Analysis
- max time kernel
149s - max time network
152s - platform
windows10-2004_x64 - resource
win10v2004-20260130-en - resource tags
- submitted
04/05/2026, 12:36
General
- Target 2026-05-04_4c0b8c49fc3703256c73e7a02206f13a_cryptolocker_elex.exe
- Size 35KB
- Sample260504-ptefnsbx91
- SHA256 a70a6a36257ac3b3ef018af76d3affd8c3a024d4f24e4e35ca1a1692619283de
Malware Config
Signatures
- Custom signatureDetection of CryptoLocker Variants 2 IoCs
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- 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\2026-05-04_4c0b8c49fc3703256c73e7a02206f13a_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-05-04_4c0b8c49fc3703256c73e7a02206f13a_cryptolocker_elex.exe"1⤵
- Checks computer location settings
- 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/4408-0-0x0000000000404000-0x0000000000405000-memory.dmp
memory/4408-1-0x00000000007A0000-0x00000000007A6000-memory.dmp
memory/4408-3-0x0000000000400000-0x0000000000406000-memory.dmp
memory/4408-2-0x0000000000400000-0x000000000040C000-memory.dmp
memory/4408-19-0x0000000003140000-0x00000000036F3000-memory.dmp
memory/5352-20-0x0000000000400000-0x000000000040C000-memory.dmp
memory/5352-28-0x0000000000400000-0x000000000040C000-memory.dmp
memory/5352-22-0x0000000000400000-0x0000000000406000-memory.dmp
memory/5352-30-0x0000000003000000-0x00000000035B3000-memory.dmp
memory/5352-31-0x0000000000400000-0x000000000040C000-memory.dmp