General

  • Target
    VoiceBoost.exe
  • Size 375KB
  • Sample260425-mlq4dsft51
  • SHA256 1fa1ca42abac4f9bb826940e36893d4e6e2612a6cc314c490e593b2834027082
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Targets

    • Target
      VoiceBoost.exe
    • Size 375KB
    • SHA256 1fa1ca42abac4f9bb826940e36893d4e6e2612a6cc314c490e593b2834027082
    • MD5 SHA1 SHA512 SSDEEP TLSH
    • Detects Umbral payload

    • Family: Umbral

      Umbral stealer is an open-source modular stealer written in C#.

    • 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.

    • Disables one or more Microsoft Defender components

      Uses the Powershell Set-MpPreference cmdlet to disable one or more Microsoft Defender components.

    • Drops file in Drivers directory

    • Disables automatic submission of suspicious files to Microsoft by Windows Defender

      Uses the Powershell Set-MpPreference cmdlet to prevent Windows Defender from automatically sending files to Microsoft for analysis.

    • Reads user/profile data of web browsers

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

    • 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 v16

Tasks