Analysis
- max time kernel
149s - max time network
154s - platform
windows10-2004_x64 - resource
win10v2004-20260130-en - resource tags
- submitted
16/04/2026, 07:31
General
- Target 2026-04-16_8ee0ee33003a182a4ae501a27cfc75dc_cryptolocker_elex.exe
- Size 51KB
- Sample260416-jcfdradv3s
- SHA256 55bdb8ebfc80b68e5b3fe5517413e5e96ce3830585d638f939819d9aae9c0c7e
Malware Config
Signatures
- Custom signatureDetection of CryptoLocker Variants 3 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\2026-04-16_8ee0ee33003a182a4ae501a27cfc75dc_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-04-16_8ee0ee33003a182a4ae501a27cfc75dc_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/3732-28-0x0000000000400000-0x0000000000408000-memory.dmp
memory/3732-19-0x0000000000400000-0x0000000000408000-memory.dmp
memory/3732-30-0x0000000002150000-0x00000000023D1000-memory.dmp
memory/3732-31-0x0000000000400000-0x0000000000408000-memory.dmp
memory/3732-43-0x0000000002150000-0x00000000023D1000-memory.dmp
memory/3732-55-0x0000000002150000-0x00000000023D1000-memory.dmp
memory/4532-0-0x0000000000404000-0x0000000000405000-memory.dmp
memory/4532-1-0x00000000006B0000-0x00000000006B6000-memory.dmp
memory/4532-3-0x0000000000400000-0x0000000000406000-memory.dmp
memory/4532-2-0x0000000000400000-0x0000000000408000-memory.dmp
memory/4532-20-0x0000000002060000-0x00000000022E1000-memory.dmp