General

  • Target

    XClient.exe

  • Size

    61KB

  • Sample

    240708-n6cxyazgkb

  • MD5

    cba7d25f925fa34425ebf47293f2133a

  • SHA1

    834b3ade6562c14834b09e2fbcd733a5651c479d

  • SHA256

    3a6aabc0788476663742c854e6378a74ce1b842c2c14a9112db789b26bf775a4

  • SHA512

    8bfd45e629934dc0037831f15a9e2d21d5f62c3353223da13347b46a870367e87db614f04bfc78118f43e54142fbfdb27b0c509f79af61337694e8743818b932

  • SSDEEP

    1536:lSawG3K3vBzul3CHjxise5Ot+bSsVG55z6f4NO2VkGk:lKG3K3v+8FiFYt+bd25GMO2Vkv

Malware Config

Extracted

Family

xworm

C2

politics-installing.gl.at.ply.gg:59813

Attributes
  • install_file

    USB.exe

Targets

    • Target

      XClient.exe

    • Size

      61KB

    • MD5

      cba7d25f925fa34425ebf47293f2133a

    • SHA1

      834b3ade6562c14834b09e2fbcd733a5651c479d

    • SHA256

      3a6aabc0788476663742c854e6378a74ce1b842c2c14a9112db789b26bf775a4

    • SHA512

      8bfd45e629934dc0037831f15a9e2d21d5f62c3353223da13347b46a870367e87db614f04bfc78118f43e54142fbfdb27b0c509f79af61337694e8743818b932

    • SSDEEP

      1536:lSawG3K3vBzul3CHjxise5Ot+bSsVG55z6f4NO2VkGk:lKG3K3v+8FiFYt+bd25GMO2Vkv

    • Contains code to disable Windows Defender

      A .NET executable tasked with disabling Windows Defender capabilities such as realtime monitoring, blocking at first seen, etc.

    • Detect Xworm Payload

    • ModiLoader, DBatLoader

      ModiLoader is a Delphi loader that misuses cloud services to download other malicious families.

    • Modifies WinLogon for persistence

    • Process spawned unexpected child process

      This typically indicates the parent process was compromised via an exploit or macro.

    • Xworm

      Xworm is a remote access trojan written in C#.

    • ModiLoader Second Stage

    • Boot or Logon Autostart Execution: Active Setup

      Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.

    • Command and Scripting Interpreter: PowerShell

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

    • Disables Task Manager via registry modification

    • Downloads MZ/PE file

    • Drops file in Drivers directory

    • Checks computer location settings

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

    • Deletes itself

    • Executes dropped EXE

    • Impair Defenses: Safe Mode Boot

    • Loads dropped DLL

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

    • Adds Run key to start application

    • Legitimate hosting services abused for malware hosting/C2

    • Drops file in System32 directory

MITRE ATT&CK Enterprise v15

Tasks