Analysis

  • max time kernel
    149s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260513-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    21/07/2026, 13:12

General

  • Target
    2026-07-21_be102d60738e23a9aac001f13ec5d96f_cryptolocker_elex.exe
  • Size 36KB
  • Sample260721-qfvfeaaa64
  • SHA256 e9f7bc3a52e763f51eea67960256cafaa9ecbaa85dd08a0be91e8dbf57cdb223
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 1 IoCs
  • 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\2026-07-21_be102d60738e23a9aac001f13ec5d96f_cryptolocker_elex.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-07-21_be102d60738e23a9aac001f13ec5d96f_cryptolocker_elex.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4216
    • C:\Users\Admin\AppData\Local\Temp\hurok.exe
      "C:\Users\Admin\AppData\Local\Temp\hurok.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:2964

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        hurok.exe

        • Path C:\Users\Admin\AppData\Local\Temp\hurok.exe
        • Size 37KB
        • SHA256 8c3caa17e5a9022fa1673bbf4222864d0b444948db03bab4b5a6238d61a57265
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/2964-19-0x0000000000610000-0x0000000000616000-memory.dmp

        memory/4216-0-0x0000000000590000-0x0000000000596000-memory.dmp

        memory/4216-1-0x0000000000590000-0x0000000000596000-memory.dmp

        memory/4216-2-0x0000000000400000-0x0000000000406000-memory.dmp