General

  • Target
    MB325992641AE.js
  • Size 498B
  • Sample261009-sd3p4sas2y
  • SHA256 ea82130e3e378485534424ad42626003dd96189ae043c763e1502383f59de83a
  • MD5 SHA1 SHA512 TLSH

Malware Config

Extracted

Family
  • xworm

Version
  • 5.0

C2
  • 84.38.133.22:1012

Mutex
  • SfqhTh3ld4Uyy1Rg

Attributes
  • Install_directory

    %AppData%

  • install_file

    bin.exe

aes.plain

Targets

    • Target
      MB325992641AE.js
    • Size 498B
    • SHA256 ea82130e3e378485534424ad42626003dd96189ae043c763e1502383f59de83a
    • MD5 SHA1 SHA512 TLSH
    • Detect Xworm Payload

    • Family: Xworm

      Xworm is a remote access trojan written in C#.

    • Process spawned unexpected child process

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

    • Badlisted process makes network request

      Network request originating from process or tool commonly abused by malware.

    • Command and Scripting Interpreter: PowerShell

      Using powershell.exe command.

    • Command and Scripting Interpreter: PowerShell

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

    • System Binary Proxy Execution: Regsvcs/Regasm

      Abuse Regasm to proxy execution of malicious code.

    • Checks computer location settings

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

    • Creates a file in the Startup directory

      A file was written to a Windows startup folder. Files in these directories are executed automatically when a user logs on or an application initializes.

    • Executes dropped EXE

    • 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

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v16

Tasks