Analysis

  • max time kernel
    148s
  • max time network
    150s
  • platform
    windows7_x64
  • resource
    win7-20240220-en
  • resource tags

    arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
  • submitted
    09/06/2024, 07:33

General

  • Target
    2024-06-09_a316b3b422b74c083ff7f511ca2780d3_cryptolocker.exe
  • Size 56KB
  • Sample240609-jdmjfsff5x
  • SHA256 d6f201cafcccaa227dda627cc4b76354028e61c6f7c00c562bc9f898eec2eaad
  • 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\2024-06-09_a316b3b422b74c083ff7f511ca2780d3_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-09_a316b3b422b74c083ff7f511ca2780d3_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of UnmapMainImage
    • Suspicious use of WriteProcessMemory
    PID:2036
    • C:\Users\Admin\AppData\Local\Temp\rewok.exe
      "C:\Users\Admin\AppData\Local\Temp\rewok.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of UnmapMainImage
      PID:2080

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        rewok.exe

        • Path \Users\Admin\AppData\Local\Temp\rewok.exe
        • Size 57KB
        • SHA256 a5468e3d138f51cb57cbe67782b3e26673967aa0299c48c6433da289d07bdaf3
        • MD5 SHA1 SHA512 SSDEEP

        memory/2036-0-0x0000000000290000-0x0000000000296000-memory.dmp

        memory/2036-8-0x0000000000290000-0x0000000000296000-memory.dmp

        memory/2036-1-0x0000000000400000-0x0000000000406000-memory.dmp

        memory/2080-23-0x0000000000380000-0x0000000000386000-memory.dmp