General

  • Target
    memz_bootkiller.exe
  • Size 755KB
  • Sample260926-xbebys1tbx
  • SHA256 5c4e77fce970bbc2e30c151ea3c6f4e771413941cce0eb40ce649d06aaa2b371
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Targets

    • Target
      memz_bootkiller.exe
    • Size 755KB
    • SHA256 5c4e77fce970bbc2e30c151ea3c6f4e771413941cce0eb40ce649d06aaa2b371
    • MD5 SHA1 SHA512 SSDEEP TLSH
    • Deletes shadow copies

      Ransomware often targets backup files to inhibit system recovery.

    • Modifies boot configuration data using bcdedit

    • Command and Scripting Interpreter: PowerShell

      Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

    • Deletes backup catalog

      Uses wbadmin.exe to inhibit system recovery.

    • Disables RegEdit via registry modification

    • Disables Task Manager via registry modification

    • Disables one or more Microsoft Defender components

      Uses the Powershell Set-MpPreference cmdlet to disable one or more Microsoft Defender components.

    • Enumerates connected drives

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

MITRE ATT&CK Enterprise v16

Tasks