General

  • Target
    SCAN 654HG - TYS SG _ pdf.JS.js
  • Size 3.5MB
  • Sample260604-g3d79sby2l
  • SHA256 288e9320f7582f388ffdd93f00efebf60bf95e672804dc703da00eac890cb661
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Extracted

Family
  • xworm

Version
  • 5.0

C2
  • 104.239.66.86:7004

Mutex
  • xVdGJQlJGU74KqKL

Attributes
  • Install_directory

    %AppData%

  • install_file

    XWormClient.exe

aes.plain

Targets

    • Target
      SCAN 654HG - TYS SG _ pdf.JS.js
    • Size 3.5MB
    • SHA256 288e9320f7582f388ffdd93f00efebf60bf95e672804dc703da00eac890cb661
    • MD5 SHA1 SHA512 SSDEEP TLSH
    • Detect Xworm Payload

    • Detects DonutLoader

    • Family: DonutLoader

      DonutLoader is a position-independent code that enables in-memory execution of VBScript, JScript, EXE, DLL files and dotNET assemblies.

    • Family: Formbook

      Formbook is a data stealing malware which is capable of stealing data.

    • Family: Xworm

      Xworm is a remote access trojan written in C#.

    • Formbook payload

    • Command and Scripting Interpreter: PowerShell

      Run Powershell and hide display window.

    • Checks computer location settings

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

    • Executes dropped EXE

    • Loads dropped DLL

    • Reads user/profile data of local email clients

      Email clients store some user data on disk where infostealers will often target it.

    • Reads user/profile data of web browsers

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

    • Accesses Microsoft Outlook profiles

    • Adds Run key to start application

    • ConfuserEx .NET packer

      Detects ConfuserEx .NET packer.

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v16

Tasks