What is Persistence?
Persistence refers to techniques adversaries use to maintain access across reboots, credential changes, and other disruptions, ensuring continued access without re-exploiting the initial vulnerability.
Definition
- Persistence
- Persistence refers to techniques adversaries use to maintain access across reboots, credential changes, and other disruptions, ensuring continued access without re-exploiting the initial vulnerability.
How Persistence Works
Attackers invest effort establishing a foothold and take steps to ensure it survives. Persistence mechanisms embed at various system levels.
Common techniques: registry run keys and startup folders (malware executes at login), scheduled tasks and cron jobs (executes at intervals), Windows services (runs as persistent service), boot-level implants (MBR, UEFI, survives OS reinstalls), DLL hijacking (legitimate apps load malicious DLLs), and web shells (backdoors in web application directories).
Detection focuses on monitoring known persistence locations: registry run key changes, new scheduled task creation, new service installations, startup directory modifications. File integrity monitoring (FIM) catches web shell drops by alerting on new files in web directories.
During eradication, identifying and removing all persistence mechanisms is critical. Missing even one allows the attacker to regain access after the incident appears resolved.
Persistence in SOC Operations
During incident response, finding all persistence is one of the most critical steps before remediation. You systematically review all persistence locations on compromised hosts: registry, scheduled tasks, services, startup folders, web directories. Missing a web shell or registry run key means the attacker re-establishes access after cleanup, and you respond to the same incident twice.
Practice Persistence in a Real SOC
SOCSimulator provides hands-on training with realistic SIEM, XDR, and Firewall interfaces. Build real analyst skills investigating persistence scenarios with zero consequences — free forever.
Related Terms
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