General

  • Target
    NMLS Updated Agreement July 26.bat
  • Size 3KB
  • Sample260701-vs9hbaa14l
  • SHA256 5c03166cc80e8f5771adf72ccb605a6b2069d057026a57e3be142dc0dece7a78
  • MD5 SHA1 SHA512 TLSH

Malware Config

Extracted

Language
  • ps1

Deobfuscated
Source
URLs
  • exe.dropper

    https://pub-94bcdb2c0d5644a18f974d17ef3ea70e.r2.dev/ZA_Access_My_Department.msi

Targets

    • Target
      NMLS Updated Agreement July 26.bat
    • Size 3KB
    • SHA256 5c03166cc80e8f5771adf72ccb605a6b2069d057026a57e3be142dc0dece7a78
    • 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.

    • 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

    • Use of msiexec (install) with remote resource

    • 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

MITRE ATT&CK Enterprise v16

Tasks