General

  • Target
    21072026_1640_Review & Approve.vbs.zip
  • Size 1KB
  • Sample260721-t6vqmseq3w
  • SHA256 6f76a57b34b021ce7e36d0fb762e6f7a913ec0ae8fd70326e4a19dde8f72073c
  • MD5 SHA1 SHA512 TLSH

Malware Config

Extracted

Language
  • ps1

Deobfuscated
Source
URLs
  • exe.dropper

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

Targets

    • Target
      Review & Approve.vbs
    • Size 2KB
    • SHA256 30dabbaa348059985d5df797b5f050c91d2c445e9f8fec8d9befcb4c527d8e9b
    • MD5 SHA1 SHA512 TLSH
    • 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.

    • 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

    • 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.

    • 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