New Osiris Ransomware Emerges as New Strain Using POORTRY Driver in BYOVD Attack - Printable Version +- Hack Forums (https://hackforums.net) +-- Forum: General Topics (https://hackforums.net/forumdisplay.php?fid=7) +--- Forum: World (https://hackforums.net/forumdisplay.php?fid=445) +---- Forum: News and Happenings (https://hackforums.net/forumdisplay.php?fid=89) +---- Thread: New Osiris Ransomware Emerges as New Strain Using POORTRY Driver in BYOVD Attack (/showthread.php?tid=6318878)

New Osiris Ransomware Emerges as New Strain Using POORTRY Driver in BYOVD Attack - Stanley - Jan 31, 2026 New Osiris Ransomware Emerges as New Strain Using POORTRY Driver in BYOVD Attack Cybersecurity researchers have disclosed details of a new ransomware family called Osiris that targeted a major food service franchisee operator in Southeast Asia in November 2025. The attack leveraged a malicious driver called POORTRY as part of a known technique referred to as bring your own vulnerable driver (BYOVD) to disarm security software, the Symantec and Carbon Black Threat Hunter https://thehackernews.com/2026/01/new-osiris-ransomware-emerges-as-new.html