Hackers Exploit Windows Policy Loophole to Forge Kernel-Mode Driver Signatures


Level 85
Thread author
Honorary Member
Top Poster
Content Creator
Malware Hunter
Aug 17, 2014
A Microsoft Windows policy loophole has been observed being exploited primarily by native Chinese-speaking threat actors to forge signatures on kernel-mode drivers.

"Actors are leveraging multiple open-source tools that alter the signing date of kernel mode drivers to load malicious and unverified drivers signed with expired certificates," Cisco Talos said in an exhaustive two-part report shared with The Hacker News. "This is a major threat, as access to the kernel provides complete access to a system, and therefore total compromise."

Following responsible disclosure, Microsoft said it has taken steps to block all certificates to mitigate the threat. It further stated that its investigation found "the activity was limited to the abuse of several developer program accounts and that no Microsoft account compromise has been identified."

About us

  • MalwareTips is a community-driven platform providing the latest information and resources on malware and cyber threats. Our team of experienced professionals and passionate volunteers work to keep the internet safe and secure. We provide accurate, up-to-date information and strive to build a strong and supportive community dedicated to cybersecurity.

User Menu

Follow us

Follow us on Facebook or Twitter to know first about the latest cybersecurity incidents and malware threats.