Analysis

  • max time kernel
    148s
  • max time network
    148s
  • platform
    windows7_x64
  • resource
    win7-20240508-en
  • resource tags

    arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
  • submitted
    25/05/2024, 02:47

General

  • Target
    2024-05-25_890a258a5de86a4eff309e48a723c47f_cryptolocker.exe
  • Size 54KB
  • Sample240525-daa4csbh5x
  • SHA256 db8797107237348e30f211d275df40493954384a6521d43533c22d8c87d9fbcc
  • MD5 SHA1 SHA512 SSDEEP
Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 1 IoCs
  • Detection of Cryptolocker Samples 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 WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-05-25_890a258a5de86a4eff309e48a723c47f_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-25_890a258a5de86a4eff309e48a723c47f_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:2992
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:2924

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        asih.exe

        • Path \Users\Admin\AppData\Local\Temp\asih.exe
        • Size 55KB
        • SHA256 7891bf45827fa0c80217ffa31f8fc4f9ce8683d1b7f28ac980e7d862a9db8070
        • MD5 SHA1 SHA512 SSDEEP

        memory/2924-15-0x00000000004E0000-0x00000000004E6000-memory.dmp

        memory/2924-22-0x0000000000250000-0x0000000000256000-memory.dmp

        memory/2992-1-0x0000000000490000-0x0000000000496000-memory.dmp

        memory/2992-0-0x00000000001D0000-0x00000000001D6000-memory.dmp

        memory/2992-8-0x00000000001D0000-0x00000000001D6000-memory.dmp