Analysis

  • max time kernel
    149s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    10/06/2024, 04:39

General

  • Target
    2024-06-10_1e76ad4cde651058849b8c744e7fdd33_cryptolocker.exe
  • Size 38KB
  • Sample240610-e94qdscb61
  • SHA256 0f898512928d74138db447ba04552267c9344325f6d1e23f15812cf2275cea6f
  • MD5 SHA1 SHA512 SSDEEP
Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 1 IoCs
  • Detection of Cryptolocker Samples 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).

  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-06-10_1e76ad4cde651058849b8c744e7fdd33_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-10_1e76ad4cde651058849b8c744e7fdd33_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:388
    • C:\Users\Admin\AppData\Local\Temp\hurok.exe
      "C:\Users\Admin\AppData\Local\Temp\hurok.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      PID:3700

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        hurok.exe

        • Path C:\Users\Admin\AppData\Local\Temp\hurok.exe
        • Size 38KB
        • SHA256 e5e682aff45b0c9140c5e70b22b8076bbbba9b99aab542482467582ef0dd65c0
        • MD5 SHA1 SHA512 SSDEEP

        memory/388-1-0x0000000000400000-0x0000000000406000-memory.dmp

        memory/388-8-0x0000000000630000-0x0000000000636000-memory.dmp

        memory/388-0-0x0000000000630000-0x0000000000636000-memory.dmp

        memory/3700-25-0x0000000002140000-0x0000000002146000-memory.dmp