Analysis

  • max time kernel
    134s
  • max time network
    124s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    02/06/2024, 10:49

General

  • Target
    2024-06-02_41d6e4709704bf78ec98f3b22aff2944_cryptolocker.exe
  • Size 68KB
  • Sample240602-mwy7rabf55
  • SHA256 d804c8930513409a3470be251acb8782110f473022ea640f8c9fc8881acb7cf2
  • MD5 SHA1 SHA512 SSDEEP
Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 5 IoCs
  • Checks computer location settings 2 TTPs 2 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).

  • Modifies system certificate store 2 TTPs 10 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-06-02_41d6e4709704bf78ec98f3b22aff2944_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-02_41d6e4709704bf78ec98f3b22aff2944_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4984
    • C:\Users\Admin\AppData\Local\Temp\misid.exe
      "C:\Users\Admin\AppData\Local\Temp\misid.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • Modifies system certificate store
      PID:2520

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        misid.exe

        • Path C:\Users\Admin\AppData\Local\Temp\misid.exe
        • Size 68KB
        • SHA256 85ca93e969fe044574d66060d7d37c1709219f8b8c79cc22ff7e7ff0559c935c
        • MD5 SHA1 SHA512 SSDEEP

        misids.exe

        • Path C:\Users\Admin\AppData\Local\Temp\misids.exe
        • Size 315B
        • SHA256 d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3
        • MD5 SHA1 SHA512

        memory/2520-17-0x0000000000500000-0x000000000050E000-memory.dmp

        memory/2520-20-0x0000000002100000-0x0000000002106000-memory.dmp

        memory/2520-26-0x00000000020E0000-0x00000000020E6000-memory.dmp

        memory/2520-49-0x0000000000500000-0x000000000050E000-memory.dmp

        memory/4984-0-0x0000000000500000-0x000000000050E000-memory.dmp

        memory/4984-1-0x00000000006B0000-0x00000000006B6000-memory.dmp

        memory/4984-2-0x00000000006D0000-0x00000000006D6000-memory.dmp

        memory/4984-9-0x00000000006B0000-0x00000000006B6000-memory.dmp

        memory/4984-18-0x0000000000500000-0x000000000050E000-memory.dmp