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Nearly 2,000 WordPress Sites Infected Using Steam Profile Comments for C2

GoDaddy’s June report shows attackers hide binary commands in invisible Unicode inside Steam comments to load malicious scripts that install a persistent backdoor.

Overview

  • GoDaddy disclosed on June 1–2, 2026 that researchers found about 1,980 WordPress sites infected by a multi-stage campaign that remains active and hard to remove.
  • The campaign reads Steam Community profile comments for six invisible Unicode characters and decodes them into binary commands that tell infected sites where to fetch code.
  • Decoded data builds URLs to hello-mywordl[.]info where a script named to look like a common library (for example lodash.core.min.js) is enqueued on every frontend page.
  • A server-side backdoor installed on infected sites listens during page loads for authenticated POST requests using cookies such as tEcaKKXEsb and a new_code parameter to deliver base64 PHP that can overwrite plugin and theme files.
  • GoDaddy published indicators and recovery advice and urges site owners to restore from known-clean backups or perform exhaustive file and database checks because the backdoor can reinstall components and partial cleanup is likely to fail.