General

  • Target
    https://dl.teamviewer.com/download/version_15x/TeamViewer_Setup_x64.exe?_gl=1*1f8b68q*_gcl_aw*R0NMLjE3ODM1NzYwNzIuRUFJYUlRb2JDaE1JOHNqVm9mTEVsUU1WSUtabUFoMTRBeHJfRUFBWUFTQUFFZ0lWRVBEX0J3RQ..*_gcl_au*OTU2NTU1MjIwLjE3ODM1NzU5OTQ.&ref=https%3A%2F%2Fwww.teamviewer.com%2Fen-in%2Fdownload%2Fportal%2Fwindows%2F
  • Sample260709-jqaenafs21

Malware Config

Targets

    • Target
      https://dl.teamviewer.com/download/version_15x/TeamViewer_Setup_x64.exe?_gl=1*1f8b68q*_gcl_aw*R0NMLjE3ODM1NzYwNzIuRUFJYUlRb2JDaE1JOHNqVm9mTEVsUU1WSUtabUFoMTRBeHJfRUFBWUFTQUFFZ0lWRVBEX0J3RQ..*_gcl_au*OTU2NTU1MjIwLjE3ODM1NzU5OTQ.&ref=https%3A%2F%2Fwww.teamviewer.com%2Fen-in%2Fdownload%2Fportal%2Fwindows%2F
    • Downloads MZ/PE file

    • ACProtect 1.3x - 1.4x DLL software

      Detects file using ACProtect software.

    • Checks computer location settings

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

    • Event Triggered Execution: Component Object Model Hijacking

      Adversaries may establish persistence by executing malicious content triggered by hijacked references to Component Object Model (COM) objects.

    • Executes dropped EXE

    • Loads dropped DLL

    • Reads user/profile data of web browsers

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

    • Checks installed software on the system

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

    • Checks whether UAC is enabled

    • Network Share Discovery

      Attempt to gather information on host network.

    • Drops file in System32 directory

    • UPX packed file

      Detects executables packed with UPX/modified UPX open source packer.

MITRE ATT&CK Enterprise v16

Tasks