Published Oct 25, 2017|Updated Nov 29, 2017

HTML/Brocoiner

Alert level: Severe Detected with Windows Defender Antivirus

Also detected as: No associated aliases

Windows Defender Antivirus detects and removes this threat.

This malware is a JavaScript cryptocurrency miner that is being served on web pages. When a computer visits one of these web pages, this JavaScript malware launches locally and uses the computer's resources to mine cryptocurrency. Such mining activities can be resource intensive and can cause visiting computers to slow down.

Known samples of this malware have been observed mining Monero coin, a type of cryptocurrency. These samples were found in websites providing:

  • Streaming videos
  • Adult content
  • Shopping

Some sites hosting this malware appear legitiate and might have been compromised for this purpose.

 

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