General

  • Target
    http://shoutout.wix.com/so/49Q0rDURQ/c?w=VBreUqYY09GtSNrEEtEsL4ooMxRYOnrs7K9qrzIO9-c.eyJ1IjoiaHR0cHM6Ly92Mi5zdW5yaXNlZmwueHl6L2FjcjBiYXQiLCJyIjoiZmQwMWI1OGUtMGNkYi00MThkLTg1NTAtNGViMTFkZWM1MGYzIiwibSI6Im1haWwiLCJjIjoiMjQ2ODA4YmYtMDU3OC00NGUyLTg0YWUtYmM1MjEyNzAzOGIxIn0
  • Sample260825-ahws9avgmd

Malware Config

Extracted

Language
  • ps1

Deobfuscated
Source
URLs
  • exe.dropper

    http://91.92.41.26:8040/Bin/ScreenConnect.ClientSetup.msi?e=Access&y=Guest

Targets

    • Target
      http://shoutout.wix.com/so/49Q0rDURQ/c?w=VBreUqYY09GtSNrEEtEsL4ooMxRYOnrs7K9qrzIO9-c.eyJ1IjoiaHR0cHM6Ly92Mi5zdW5yaXNlZmwueHl6L2FjcjBiYXQiLCJyIjoiZmQwMWI1OGUtMGNkYi00MThkLTg1NTAtNGViMTFkZWM1MGYzIiwibSI6Im1haWwiLCJjIjoiMjQ2ODA4YmYtMDU3OC00NGUyLTg0YWUtYmM1MjEyNzAzOGIxIn0
    • Badlisted process makes network request

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

    • Sets service image path in registry

      This determines the executable launched when a service starts. It can be used to establish persistence.

    • Signed with revoked ConnectWise certificate

      Binary is signed using a ConnectWise certificate revoked for key compromise.

    • ConnectWise ScreenConnect remote access tool

      ConnectWise ScreenConnect is a remote desktop tool that can be used as a backdoor.

    • 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

    • Command and Scripting Interpreter: PowerShell

      Using powershell.exe command.

    • Enumerates connected drives

      Attempts to read the root path of hard drives other than the default C: drive.

    • Looks up external IP address via web service

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

    • Boot or Logon Autostart Execution: Authentication Package

      Suspicious Windows Authentication Registry Modification.

    • Drops file in System32 directory

MITRE ATT&CK Enterprise v16

Tasks