CVE-2026-59310 - VMware vCenter Suspicious Syslog File Written to Cron Directory

Identifies the creation or modification of files within /etc/cron.d that exhibit suspicious naming conventions, including references to syslog, .log extensions, 59310, or known filenames such as zz-poc59310-syslog.log. The rule is intended to detect potential abuse of the cron scheduling mechanism for persistence, particularly where attackers disguise cron entries as legitimate log files to evade detection.