Analysis

  • max time kernel
    93s
  • max time network
    123s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    10/06/2024, 04:37

General

  • Target
    2024-06-10_3e7bfb1672f927c0d5c8b19678daa9c1_cryptolocker.exe
  • Size 78KB
  • Sample240610-e8s79scb6t
  • SHA256 19e6abcaf6af252fa87f1cc602839ee01870af0b77ccad8aafe68d67e19fd825
  • MD5 SHA1 SHA512 SSDEEP
Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 1 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\2024-06-10_3e7bfb1672f927c0d5c8b19678daa9c1_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-10_3e7bfb1672f927c0d5c8b19678daa9c1_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3500
    • 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:512

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 78KB
        • SHA256 6a4104aefeeda5fbaea1965a106824e8162228d5ff4b1f216cbabdf5492f09aa
        • MD5 SHA1 SHA512 SSDEEP

        misids.exe

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

        memory/512-20-0x00000000006C0000-0x00000000006C6000-memory.dmp

        memory/512-18-0x00000000004E0000-0x00000000004E3000-memory.dmp

        memory/512-26-0x00000000006A0000-0x00000000006A6000-memory.dmp

        memory/3500-0-0x00000000004E0000-0x00000000004E3000-memory.dmp

        memory/3500-1-0x0000000002140000-0x0000000002146000-memory.dmp

        memory/3500-2-0x0000000002040000-0x0000000002046000-memory.dmp

        memory/3500-9-0x0000000002140000-0x0000000002146000-memory.dmp

        memory/3500-17-0x00000000004E0000-0x00000000004E3000-memory.dmp