The Gist: Attackers establish multiple persistence mechanisms and disable protective measures after intrusion; removing malware alone without investigating the entry point leads to renewed compromise.
Attackers do not only use network access for immediate attacks, but establish persistence mechanisms and disable defense measures. An analysis by Huntress shows typical behavior in the post-breach phase and why investigating the original entry point is critical.
After the initial compromise of a system comes the phase in which attackers consolidate their position. Huntress has analyzed a real intrusion and documented how threat actors systematically proceed to create persistence: they install multi-layered backdoors, set up hidden user accounts, and establish alternative access paths to avoid dependence on the removal of a single malware sample.
A critical step in the attacker playbook is the disabling of security measures. This includes shutting down Endpoint Detection and Response (EDR), disabling Windows Defender, deleting event logs, and modifying firewall rules. Manipulation of backup and disaster recovery systems is also part of the strategy to compromise recovery capabilities.
Defenders must understand that removing detected malware alone is not sufficient. Without clarifying the original entry point – whether phishing, compromised credentials, unpatched vulnerabilities, or software supply chain compromises – the underlying security gap remains open. Attackers can re-enter via the same route or use alternative paths they have already explored.
Source: www.bleepingcomputer.com · Published 30 July 2026
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