Analysis

  • max time kernel
    150s
  • max time network
    156s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    01/06/2024, 18:26

General

  • Target
    2024-06-01_591e76dd1f35231887a39966c2148fb9_cryptolocker.exe
  • Size 69KB
  • Sample240601-w3prbsba31
  • SHA256 09d5aa573e53136fb60dbd62bf242901248d694afc52ab4c5105f685e7044c4f
  • MD5 SHA1 SHA512 SSDEEP
Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 4 IoCs
  • Detection of Cryptolocker Samples 2 IoCs
  • Detects executables built or packed with MPress PE compressor 4 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\2024-06-01_591e76dd1f35231887a39966c2148fb9_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-01_591e76dd1f35231887a39966c2148fb9_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:1540
    • C:\Users\Admin\AppData\Local\Temp\misid.exe
      "C:\Users\Admin\AppData\Local\Temp\misid.exe"
      2⤵
      • Executes dropped EXE
      PID:2516

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        misid.exe

        • Path \Users\Admin\AppData\Local\Temp\misid.exe
        • Size 69KB
        • SHA256 3743c1c52d6db73fc1cabd463faffec1900f97069ac53719da11c18c0b2b7534
        • MD5 SHA1 SHA512 SSDEEP

        memory/1540-0-0x0000000000500000-0x000000000050F000-memory.dmp

        memory/1540-1-0x00000000002C0000-0x00000000002C6000-memory.dmp

        memory/1540-9-0x00000000002C0000-0x00000000002C6000-memory.dmp

        memory/1540-3-0x00000000005F0000-0x00000000005F6000-memory.dmp

        memory/1540-15-0x0000000000500000-0x000000000050F000-memory.dmp

        memory/2516-18-0x0000000000380000-0x0000000000386000-memory.dmp

        memory/2516-25-0x0000000000240000-0x0000000000246000-memory.dmp

        memory/2516-26-0x0000000000500000-0x000000000050F000-memory.dmp