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
    04/05/2026, 11:17

General

  • Target
    2026-05-04_986540b1a1a0d2f648c523b807b3a69f_cryptolocker_elex.exe
  • Size 481KB
  • Sample260504-ndwvcahx21
  • SHA256 856bbc9bba0b8489326f67acd30f7c09a16c555b85cfff0601c368c04f85013b
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 4 IoCs
  • Detection of Cryptolocker Samples 4 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\2026-05-04_986540b1a1a0d2f648c523b807b3a69f_cryptolocker_elex.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-05-04_986540b1a1a0d2f648c523b807b3a69f_cryptolocker_elex.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4040
    • 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:1620

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 482KB
        • SHA256 fda97f9ea31987d21688c857b9c169351e9bb9530a90e14afed5d945d486aeac
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/1620-21-0x0000000002200000-0x0000000002206000-memory.dmp

        memory/1620-27-0x0000000000500000-0x0000000000587000-memory.dmp

        memory/1620-29-0x0000000002220000-0x0000000002284000-memory.dmp

        memory/4040-0-0x0000000002390000-0x0000000002396000-memory.dmp

        memory/4040-1-0x0000000000513000-0x0000000000514000-memory.dmp

        memory/4040-2-0x0000000000500000-0x0000000000587000-memory.dmp

        memory/4040-4-0x00000000023D0000-0x00000000023D6000-memory.dmp

        memory/4040-3-0x0000000000500000-0x0000000000587000-memory.dmp

        memory/4040-19-0x0000000002850000-0x00000000028B4000-memory.dmp