Analysis

  • max time kernel
    150s
  • max time network
    151s
  • platform
    windows11-21h2_x64
  • resource
    win11-20260130-en
  • resource tags

    arch:x64arch:x86image:win11-20260130-enlocale:en-usos:windows11-21h2-x64systemwindows
  • submitted
    05/05/2026, 12:19

General

  • Target
    2026-05-05_249b1d8b3e64987f242d8d756498a96f_cryptolocker_elex.exe
  • Size 77KB
  • Sample260505-pg85hsbv9n
  • SHA256 e629168e55d7d097d1dc195e14370fb5b269af4b688efe1b4f62e75291d366cc
  • 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
  • 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\2026-05-05_249b1d8b3e64987f242d8d756498a96f_cryptolocker_elex.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-05-05_249b1d8b3e64987f242d8d756498a96f_cryptolocker_elex.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4424
    • 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:1652

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 77KB
        • SHA256 69ea5f00ade7836651ef1e82be1ed2c8b23dc15c2925f6b6d41aa74e6b75421d
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/1652-24-0x00000000006A0000-0x00000000006A6000-memory.dmp

        memory/1652-25-0x0000000002350000-0x00000000023D2000-memory.dmp

        memory/1652-26-0x0000000002EE0000-0x0000000002EE7000-memory.dmp

        memory/4424-0-0x00000000021D0000-0x00000000021D6000-memory.dmp

        memory/4424-1-0x00000000021D0000-0x00000000021D6000-memory.dmp

        memory/4424-2-0x00000000021F0000-0x00000000021F6000-memory.dmp

        memory/4424-16-0x00000000026D0000-0x0000000002752000-memory.dmp