General

  • Target
    WindowsUpdate.exe
  • Size 104.7MB
  • Sample260802-ernlfsszgw
  • SHA256 64bde6c4880c0ec2787f22b3e2856a4e296cc4b64b20ee3641082fa6c0d52512
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Targets

    • Target
      WindowsUpdate.exe
    • Size 104.7MB
    • SHA256 64bde6c4880c0ec2787f22b3e2856a4e296cc4b64b20ee3641082fa6c0d52512
    • MD5 SHA1 SHA512 SSDEEP TLSH
    • Creates a file in the Startup directory

      A file was written to a Windows startup folder. Files in these directories are executed automatically when a user logs on or an application initializes.

    • Loads dropped DLL

    • Adds Run key to start application

    • Contacts third-party web service commonly abused for C2

      Legitimate web (hosting) services can be abused by malware authors to host malware or C2s.

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

    • Writes to the Master Boot Record (MBR)

      Bootkits write to the MBR to gain persistence at a level below the operating system.

MITRE ATT&CK Enterprise v16

Tasks