Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260130-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260130-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    24/04/2026, 09:40

General

  • Target
    2026-04-24_1da137a5b022f80a0d2d1ebc5a2bb50e_cryptolocker_elex.exe
  • Size 75KB
  • Sample260424-lnjawses3t
  • SHA256 54e28cab544121cc53cbb2603e26991507d73468f723fa2607dbd850b8152847
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10

Malware Config

Signatures

  • Custom signature
    Detection of CryptoLocker Variants 1 IoCs
  • Custom signature
    Detection of Cryptolocker Samples 1 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\2026-04-24_1da137a5b022f80a0d2d1ebc5a2bb50e_cryptolocker_elex.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-04-24_1da137a5b022f80a0d2d1ebc5a2bb50e_cryptolocker_elex.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4020
    • C:\Users\Admin\AppData\Local\Temp\misid.exe
      "C:\Users\Admin\AppData\Local\Temp\misid.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:5024

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        misid.exe

        • Path C:\Users\Admin\AppData\Local\Temp\misid.exe
        • Size 75KB
        • SHA256 996f3e9339c72c7f8930654d7b84afd4b662b2237010a70d5aac40a1bc5f05e8
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/4020-0-0x00000000004C0000-0x00000000004C6000-memory.dmp

        memory/4020-1-0x00000000004C0000-0x00000000004C6000-memory.dmp

        memory/4020-2-0x00000000004E0000-0x00000000004E6000-memory.dmp

        memory/5024-17-0x0000000001FE0000-0x0000000001FE6000-memory.dmp

        memory/5024-23-0x0000000000650000-0x0000000000656000-memory.dmp