General

  • Target
    Invoice.vbs
  • Size 1KB
  • Sample260806-amd41avtft
  • SHA256 6837eaf9330e40992fb34ba8c20d9a5349729b12ca1f6d7c887baaf7c76a5ab3
  • MD5 SHA1 SHA512 TLSH

Malware Config

Extracted

Language
  • ps1

Deobfuscated
Source
URLs
  • exe.dropper

    https://mhfh.screenconnect.com/Bin/ScreenConnect.ClientSetup.msi?e=Access&y=Guest

Targets

    • Target
      Invoice.vbs
    • Size 1KB
    • SHA256 6837eaf9330e40992fb34ba8c20d9a5349729b12ca1f6d7c887baaf7c76a5ab3
    • MD5 SHA1 SHA512 TLSH
    • Badlisted process makes network request

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

    • Command and Scripting Interpreter: PowerShell

      Run Powershell and hide display window.

    • Sets service image path in registry

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

    • Checks computer location settings

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

    • 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

    • Enumerates connected drives

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

    • Boot or Logon Autostart Execution: Authentication Package

      Suspicious Windows Authentication Registry Modification.

    • Drops file in System32 directory

    • Executes a VBScript file via the Windows Script Host.

MITRE ATT&CK Enterprise v16

Tasks