Analysis
- max time kernel
148s - max time network
150s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260911-en - resource tags
- submitted
25/09/2026, 17:33
General
- Target 2026-09-25_ef5e8e191fafa06051b68d0f97901af8_cryptolocker_elex.exe
- Size 57KB
- Sample260925-v467bstv2k
- SHA256 4cdd924a93cfe85a83faacf991c5758815664437079d7d411a5c1fb4b255214f
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).
- Reads the TCP/IP host and domain name from the registry 1 TTPs 2 IoCs
The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.
- 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\2026-09-25_ef5e8e191fafa06051b68d0f97901af8_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-09-25_ef5e8e191fafa06051b68d0f97901af8_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
- Reads the TCP/IP host and domain name from the registry
- System Location Discovery: System Language Discovery
-
-
C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k GPSvcGroup1⤵
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
rewok.exe
memory/4044-20-0x0000000000400000-0x0000000000408000-memory.dmp
memory/4044-22-0x0000000000400000-0x0000000000408000-memory.dmp
memory/4044-23-0x0000000000400000-0x0000000000406000-memory.dmp
memory/4044-29-0x0000000000400000-0x0000000000408000-memory.dmp
memory/4044-31-0x0000000000400000-0x0000000000408000-memory.dmp
memory/4460-0-0x0000000000404000-0x0000000000405000-memory.dmp
memory/4460-1-0x00000000022C0000-0x00000000022C6000-memory.dmp
memory/4460-2-0x0000000000400000-0x0000000000408000-memory.dmp
memory/4460-3-0x0000000000400000-0x0000000000406000-memory.dmp