Microsoft Busts Ransomware Ring: Over 200 Fraudulent Certificates Revoked!

Microsoft Threat Intelligence has shut down over 200 fraudulently signed certificates used by Vanilla Tempest to deliver malware via fake MS Teams installers. This financially motivated group, also known as Vice Spider, employed SEO poisoning and malvertising to trick users into downloading the malicious files, ultimately deploying the Rhysida ransomware.

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Hot Take:

Oh, Microsoft, you’ve done it again! In a world where the only thing more common than a cat video is a cyber threat, Microsoft has swooped in to save the day, revoking over 200 fraudulent certificates. Move over, Superman, there’s a new sheriff in town, and it’s wearing a Windows logo! Our hats are off to you, Redmond’s finest, for unmasking the villainous Vanilla Tempest and their dastardly schemes involving fake MS Teams setups. Who knew that even your morning meeting could come with a side of ransomware and malware? Well, at least we have Microsoft Defender to save us from a fate worse than listening to your boss talk about TPS reports.

Key Points:

  • Microsoft revoked over 200 fraudulently signed certificates used in fake MS Teams setups.
  • The campaign, known as Vanilla Tempest, is a financially motivated ransomware operation.
  • Fake MS Teams files delivered the Oyster backdoor and ransomware like Rhysida.
  • Attackers used SEO poisoning and malvertising to distribute fake installers.
  • Microsoft Defender Antivirus can block this threat with full protection enabled.

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