Beware of Fake Office Tool Downloads: Cybercriminals Targeting You with Malvertising Madness!
Beware of cybercriminals disguising malware as Microsoft Teams and Google Meet downloads! This sneaky campaign targets the financial sector using SEO poisoning and malvertising. Always download from official sites to avoid the Oyster backdoor, a serious threat linked to ransomware groups. Stay safe out there!
Hot Take:
Well, folks, it looks like cybercriminals have decided to put on their business suits and join the corporate world – by pretending to be Microsoft Teams and Google Meet, no less! If only they put this much effort into something productive, like inventing a virus-free version of Internet Explorer. But alas, their ambition is only matched by their cunning. So, hold on to your hard drives, because the only thing these downloads are going to increase is your malware count!
Key Points:
- Cybercriminals are leveraging SEO poisoning and malvertising to trick users into downloading malware disguised as Microsoft Teams and Google Meet.
- The current attack campaign, targeting financial sectors, began in mid-November 2025 but has roots going back to November 2024.
- The malware, known as the Oyster backdoor, was first discovered in September 2023 and is linked to ransomware groups like Rhysida.
- Fake installers are code-signed to appear legitimate, with most certificates now revoked.
- Users are advised to download software directly from official sources to avoid infection.