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General

  • Target

    tool.exe

  • Size

    262KB

  • Sample

    250301-yxwzka1sd1

  • MD5

    3a5caf979b458f716a670e49ee8c4cca

  • SHA1

    80f20a21284752096e93d0a99a243e1cbca7d458

  • SHA256

    b6253c0d16bb1f326958003cf456382dcb1876f4519519b6b39676ee369ac2fb

  • SHA512

    e00a5f7753f6055766028fe38f780d04c02b74d6852c0e6b684001740d3d942349ec03d7fdf32af543f2b2cc1f8b241dcb87e3b52dcdfcfa3a08f96f69bddb81

  • SSDEEP

    6144:ilejaU5gt8SYDRmGWp8Vu2PD9+W5reXsC24SC:pjh5SY1mGWpw995iT24S

Malware Config

Extracted

Family

xworm

C2

147.185.221.25:58680

Attributes
  • Install_directory

    %AppData%

  • install_file

    XClient.exe

Targets

    • Target

      tool.exe

    • Size

      262KB

    • MD5

      3a5caf979b458f716a670e49ee8c4cca

    • SHA1

      80f20a21284752096e93d0a99a243e1cbca7d458

    • SHA256

      b6253c0d16bb1f326958003cf456382dcb1876f4519519b6b39676ee369ac2fb

    • SHA512

      e00a5f7753f6055766028fe38f780d04c02b74d6852c0e6b684001740d3d942349ec03d7fdf32af543f2b2cc1f8b241dcb87e3b52dcdfcfa3a08f96f69bddb81

    • SSDEEP

      6144:ilejaU5gt8SYDRmGWp8Vu2PD9+W5reXsC24SC:pjh5SY1mGWpw995iT24S

    • Detect Xworm Payload

    • Xworm

      Xworm is a remote access trojan written in C#.

    • Xworm family

    • Command and Scripting Interpreter: PowerShell

      Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

    • Checks computer location settings

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

    • Drops startup file

    • Executes dropped EXE

    • Legitimate hosting services abused for malware hosting/C2

    • Looks up external IP address via web service

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

MITRE ATT&CK Enterprise v15

Tasks