Analysis
- max time kernel
149s - max time network
151s - platform
windows10-2004_x64 - resource
win10v2004-20260130-en - resource tags
- submitted
19/04/2026, 04:37
General
- Target 2026-04-19_5f3b571467ee5f3941028754fb15872b_cryptolocker_elex.exe
- Size 32KB
- Sample260419-e88b7acv8j
- SHA256 0a1d1bc66b0ddeae241a9883effefe17cf9c285c062f9acd776cdc2acac34060
Malware Config
Signatures
- Detection 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\2026-04-19_5f3b571467ee5f3941028754fb15872b_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-04-19_5f3b571467ee5f3941028754fb15872b_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/4460-0-0x0000000000404000-0x0000000000405000-memory.dmp
memory/4460-1-0x00000000021A0000-0x00000000021A6000-memory.dmp
memory/4460-2-0x0000000000400000-0x000000000040C000-memory.dmp
memory/4460-3-0x0000000000400000-0x0000000000406000-memory.dmp
memory/4460-19-0x00000000006B0000-0x000000000076F000-memory.dmp
memory/6016-20-0x0000000000400000-0x000000000040C000-memory.dmp
memory/6016-30-0x0000000000400000-0x000000000040C000-memory.dmp
memory/6016-29-0x0000000000660000-0x000000000071F000-memory.dmp
memory/6016-54-0x0000000000660000-0x000000000071F000-memory.dmp
memory/6016-56-0x0000000000660000-0x000000000071F000-memory.dmp