This is a follow-up analysis to a previous blog about a zero day exploit where the FortiGuard Incident Response (FGIR) team examined how remote attackers exploited multiple vulnerabilities in an appliance to gain control of a customer’s system.
At the end of that blog, Fortinet researchers revealed that the remote attacker had deployed a rootkit (a loadable kernel module, sysinitd.ko) and a user-space binary file (sysinitd) on the affected system by executing a shell script (Install.sh). Additionally, to establish rootkit persistence, entries for the rootkit malware were added in the /etc/rc.local and /etc/rc.d/rc.local files so the rootkit malware is loaded during system startup.
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Source: Fortinet
Related:
- NSA Advocates Data Sharing Framework
June 23, 2017
The economics of cybersecurity are skewed in favor of attackers, who invest once and can launch thousands of attacks with a piece of malware or exploit kit. That’s why Neal Ziring, technical director for the NSA’s Capabilities Directorate, wants to flip the financial equation on bad guys. “We need to conduct defenses in a way that ...