General

  • Target
    WindowsUpdate.exe
  • Size 33.8MB
  • Sample261027-m1y3jsct61
  • SHA256 501484a16c39b5a5c6e1ecb23858455443ca2aa3922fbb1714caf6b844d03c6c
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Targets

    • Target
      WindowsUpdate.exe
    • Size 33.8MB
    • SHA256 501484a16c39b5a5c6e1ecb23858455443ca2aa3922fbb1714caf6b844d03c6c
    • MD5 SHA1 SHA512 SSDEEP TLSH
    • Looks for VirtualBox Guest Additions in registry

    • Looks for VirtualBox drivers on disk

    • Command and Scripting Interpreter: PowerShell

      Using powershell.exe command.

    • Command and Scripting Interpreter: PowerShell

      Run Powershell to get system information as a root user.

    • Looks for VMWare Tools registry key

    • Looks for VMWare drivers on disk

    • Outbound SSH connection to private host

      SSH is used for remote access. Internal traffic may indicate local host discovery or lateral movement.

    • Loads dropped DLL

    • Reads WinSCP keys stored on the system

      Tries to access WinSCP stored sessions.

    • Reads data files stored by FTP clients

      Tries to access configuration files associated with programs like FileZilla.

    • Reads local data of messenger clients

      Infostealers often target stored data of messaging applications, which can include saved credentials and account information.

    • 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.

    • Unsecured Credentials: Credentials In Files

      Steal credentials from unsecured files.

    • Accesses Microsoft Outlook profiles

    • Accesses cryptocurrency files/wallets, possible credential harvesting

    • Checks installed software on the system

      Looks up Uninstall key entries in the registry to enumerate software on the system.

    • Drops desktop.ini file(s)

    • Looks up external IP address via web service

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

    • Network Service Discovery

      Attempt to gather information on host's network.

    • Network Share Discovery

      Attempt to gather information on host network.

    • Uses WMI to collect hardware manufacturer information

      Uses WMI to read the system manufacturer, model, baseboard or display adapter, which is often used to detect virtual machines and evade sandboxes.

    • Discovers running processes

      Running process information can be used to identify security tools or plan follow-on actions.

MITRE ATT&CK Enterprise v16

Tasks