Analysis

  • max time kernel
    150s
  • max time network
    154s
  • platform
    windows11-21h2_x64
  • resource
    win11-20260130-en
  • resource tags

    arch:x64arch:x86image:win11-20260130-enlocale:en-usos:windows11-21h2-x64systemwindows
  • submitted
    21/04/2026, 04:41

General

  • Target
    2026-04-21_fe4f307d73e92b20c3e524c0c6b7e7d1_cryptolocker_elex.exe
  • Size 93KB
  • Sample260421-fa43jsbx9t
  • SHA256 a69619b0628f35244693c605320d132bea3d2a0890e77ceae07457243b6a5512
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 5 IoCs
  • 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\2026-04-21_fe4f307d73e92b20c3e524c0c6b7e7d1_cryptolocker_elex.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-04-21_fe4f307d73e92b20c3e524c0c6b7e7d1_cryptolocker_elex.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:5728
    • 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:2548

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 94KB
        • SHA256 3fe812ade27385d87b9a1121ef41f1e5c09d174b4261c1765520964ca3847fbf
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/2548-19-0x0000000000500000-0x000000000050F000-memory.dmp

        memory/2548-20-0x00000000007D0000-0x00000000007D6000-memory.dmp

        memory/2548-26-0x0000000000500000-0x000000000050F000-memory.dmp

        memory/5728-2-0x0000000000500000-0x000000000050F000-memory.dmp

        memory/5728-1-0x000000000050A000-0x000000000050B000-memory.dmp

        memory/5728-0-0x0000000000670000-0x0000000000676000-memory.dmp

        memory/5728-3-0x0000000000500000-0x000000000050F000-memory.dmp

        memory/5728-4-0x0000000002170000-0x0000000002176000-memory.dmp