What is Eradication?
Eradication is the incident response phase where all threat components are permanently removed: malware, backdoors, persistence mechanisms, unauthorized accounts, and compromised credentials, ensuring the threat cannot re-establish after containment.
Definition
- Eradication
- Eradication is the incident response phase where all threat components are permanently removed: malware, backdoors, persistence mechanisms, unauthorized accounts, and compromised credentials, ensuring the threat cannot re-establish after containment.
How Eradication Works
Eradication follows containment and requires thorough knowledge of everything the attacker did. Incomplete eradication is one of the most common causes of incident recurrence. Organizations that remove obvious malware while missing a web shell or registry persistence mechanism find themselves responding to the same incident weeks later.
Steps: remove all malware and attacker tools (EDR quarantine plus manual removal), delete all persistence mechanisms (registry keys, scheduled tasks, services, web shells), remove unauthorized accounts or group memberships, reset all potentially exposed credentials (not just known-compromised accounts), patch exploited vulnerabilities, and clean or rebuild systems that cannot be reliably cleaned.
Sometimes the safest approach is system reimaging from a known-good baseline, particularly for systems where the attacker had root or SYSTEM access and may have installed kernel-level implants.
Eradication in SOC Operations
Thorough eradication requires a complete picture of attacker activity, which is why forensic investigation during containment matters. You document all malicious artifacts, compromised accounts, and attacker actions during investigation, then work systematically through the list during eradication. Verification scanning after eradication confirms the threat is fully removed before transitioning to recovery.
Practice Eradication in a Real SOC
SOCSimulator provides hands-on training with realistic SIEM, XDR, and Firewall interfaces. Build real analyst skills investigating eradication scenarios with zero consequences — free forever.
Related Terms
Containment is the incident response phase focused on limiting the spread and impact of a confirmed ...
Recovery is the incident response phase where normal business operations are restored: affected syst...
Incident response (IR) is the structured process for preparing for, detecting, containing, eradicati...
Persistence refers to techniques adversaries use to maintain access across reboots, credential chang...
Digital forensics is the scientific process of collecting, preserving, analyzing, and presenting dig...
More Processes Terms
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