General

  • Target
    Calendly_Setup.bat
  • Size 4.6MB
  • Sample260728-bmhmvsec99
  • SHA256 62683c220ef27c99c3f9db9f7cabb6c86656df8446493796874ea2bce435f3c2
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Targets

    • Target
      Calendly_Setup.bat
    • Size 4.6MB
    • SHA256 62683c220ef27c99c3f9db9f7cabb6c86656df8446493796874ea2bce435f3c2
    • MD5 SHA1 SHA512 SSDEEP TLSH
    • 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.

    • 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

    • Command and Scripting Interpreter: PowerShell

      Using powershell.exe command.

    • Command and Scripting Interpreter: PowerShell

      Start PowerShell.

    • 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.

    • Executes a VBScript file via the Windows Script Host.

MITRE ATT&CK Enterprise v16

Tasks