Weaponized Putty and Teams Ads Deliver Malware Allowing Hackers to Access Network

An ongoing malicious advertising campaign is weaponizing legitimate software downloads to deploy OysterLoader malware, previously identified as Broomstick and CleanUpLoader. This sophisticated initial access tool enables cybercriminals to establish footholds in corporate networks, ultimately serving as a delivery mechanism for the notorious Rhysida ransomware gang. The Rhysida ransomware operation has targeted enterprises since emerging from […]

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