Analysis

  • max time kernel
    143s
  • max time network
    112s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    26/12/2023, 03:20

General

  • Target

    4fcd95e4645eac7c9f5687dbbcec2512.exe

  • Size

    653KB

  • MD5

    4fcd95e4645eac7c9f5687dbbcec2512

  • SHA1

    b64099e7dc392874ba08d31c8f8aeb1e3302603d

  • SHA256

    f1a1664e0504f5a1575022dbdcfd19c6a5abdda6fb4a841e116b34b263e56495

  • SHA512

    ddb68ff8e0ac386db6a389018f0cd69e72ad8c822b4dd61978a16c6cdd18af8d6f922957bbe8d3ac62b09ecfc13fbe57f2502b3d1e6c4d6d9826dae18cabe6d0

  • SSDEEP

    12288:dhkDgouVA2nxKkorvdRgQriDwOIxmxiZnYQE7PJcbNmEh:rRmJkcoQricOIQxiZY1WNmM

Malware Config

Signatures

  • UAC bypass 3 TTPs 1 IoCs
  • Loads dropped DLL 4 IoCs
  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Installs/modifies Browser Helper Object 2 TTPs 2 IoCs

    BHOs are DLL modules which act as plugins for Internet Explorer.

  • AutoIT Executable 1 IoCs

    AutoIT scripts compiled to PE executables.

  • Enumerates physical storage devices 1 TTPs

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

  • Modifies Internet Explorer Phishing Filter 1 TTPs 3 IoCs
  • Modifies Internet Explorer settings 1 TTPs 4 IoCs
  • Modifies registry class 23 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs
  • System policy modification 1 TTPs 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\4fcd95e4645eac7c9f5687dbbcec2512.exe
    "C:\Users\Admin\AppData\Local\Temp\4fcd95e4645eac7c9f5687dbbcec2512.exe"
    1⤵
    • UAC bypass
    • Checks whether UAC is enabled
    • Modifies Internet Explorer Phishing Filter
    • Modifies Internet Explorer settings
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    • System policy modification
    PID:5076
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
      C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe /codebase "C:\Users\Admin\AppData\Roaming\YoutubeHD\YoutubeHD.dll"
      2⤵
      • Loads dropped DLL
      • Installs/modifies Browser Helper Object
      • Modifies registry class
      PID:1184

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • memory/1184-14-0x00000000004C0000-0x00000000004D2000-memory.dmp

          Filesize

          72KB

        • memory/1184-15-0x00000000733F0000-0x0000000073BA0000-memory.dmp

          Filesize

          7.7MB

        • memory/1184-23-0x00000000733F0000-0x0000000073BA0000-memory.dmp

          Filesize

          7.7MB

        • memory/1184-19-0x0000000004E20000-0x0000000004E2A000-memory.dmp

          Filesize

          40KB

        • memory/5076-0-0x0000000000400000-0x00000000004B5000-memory.dmp

          Filesize

          724KB