General

  • Target
    mxfilter.io.exe
  • Size 51KB
  • Sample260704-vztqfaev4j
  • SHA256 fd000a1acc5a306b07a1a2ec6ff5681c6d7791793572cf50be517fe2dd56e250
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Targets

    • Target
      mxfilter.io.exe
    • Size 51KB
    • SHA256 fd000a1acc5a306b07a1a2ec6ff5681c6d7791793572cf50be517fe2dd56e250
    • MD5 SHA1 SHA512 SSDEEP TLSH
    • Contains code to disable Windows Defender

      A .NET executable tasked with disabling Windows Defender capabilities such as realtime monitoring, blocking at first seen, etc.

    • Modifies Windows Defender DisableAntiSpyware settings

    • Deletes shadow copies

      Ransomware often targets backup files to inhibit system recovery.

    • Boot or Logon Autostart Execution: Active Setup

      Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.

    • Command and Scripting Interpreter: PowerShell

      Run Powershell and hide display window.

    • Disables RegEdit via registry modification

    • Disables Task Manager via registry modification

    • Drops file in Drivers directory

    • Modifies Windows Firewall

    • Checks computer location settings

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

    • Disables service(s)

    • Drops startup file

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

    • Stops running service(s)

    • Adds Run key to start application

    • Drops desktop.ini file(s)

    • Enumerates connected drives

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

    • Drops file in System32 directory

    • Enumerates processes with tasklist

    • Sets desktop wallpaper using registry

MITRE ATT&CK Enterprise v16

Tasks