Analysis

  • max time kernel
    118s
  • max time network
    119s
  • platform
    windows7_x64
  • resource
    win7-20240419-en
  • resource tags

    arch:x64arch:x86image:win7-20240419-enlocale:en-usos:windows7-x64system
  • submitted
    31/05/2024, 06:32

General

  • Target
    2024-05-31_5b6e235617031ec91033a00df7cab708_cryptolocker.exe
  • Size 36KB
  • Sample240531-hatb6aaa4t
  • SHA256 e4e7cef0b0ee110aefa479693d582a0e8736dd3cd1b1f7441a08bf0ad631daf7
  • MD5 SHA1 SHA512 SSDEEP
Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Suspicious use of UnmapMainImage 2 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-05-31_5b6e235617031ec91033a00df7cab708_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-31_5b6e235617031ec91033a00df7cab708_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of UnmapMainImage
    • Suspicious use of WriteProcessMemory
    PID:1008
    • C:\Users\Admin\AppData\Local\Temp\gewos.exe
      "C:\Users\Admin\AppData\Local\Temp\gewos.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of UnmapMainImage
      PID:2556

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        gewos.exe

        • Path \Users\Admin\AppData\Local\Temp\gewos.exe
        • Size 36KB
        • SHA256 d7c75f54575102bedc23de256fd9efc55f65978a2723d7585db346609174e636
        • MD5 SHA1 SHA512 SSDEEP

        memory/1008-0-0x0000000000290000-0x0000000000296000-memory.dmp

        memory/1008-1-0x0000000000400000-0x0000000000406000-memory.dmp

        memory/1008-8-0x0000000000290000-0x0000000000296000-memory.dmp

        memory/2556-23-0x0000000001CA0000-0x0000000001CA6000-memory.dmp