Attackers Exploit Trusted Tools - 3 Reasons You Should Care

What Happened

Cybersecurity has long focused on blocking malware and stopping attacks. However, a new trend is emerging where attackers are using trusted tools within your environment to conduct their operations. This shift means that traditional detection methods are becoming less effective. A recent analysis of over 700,000 high-severity incidents revealed that 84% of attacks now leverage legitimate tools, making it difficult for security teams to distinguish between normal operations and malicious activities.

Attackers are employing a tactic known as Living off the Land (LOTL), where they utilize built-in tools like PowerShell and WMIC to move laterally within networks. This approach allows them to blend in seamlessly with regular activities, creating a dangerous blind spot for security teams. By the time something seems amiss, the attacker may already have established a foothold in the system.

Who's Behind It

The rise of LOTL attacks indicates a significant shift in how threat actors operate. They are no longer relying solely on malware but are instead exploiting the very tools that organizations trust. This trend highlights a fundamental flaw in many organizations' security postures. Many teams lack the visibility needed to identify which tools are accessible across their environments and how they can be abused.

With up to 95% of access to risky tools being unnecessary, organizations often fail to manage these tools effectively. Attackers take advantage of this unmanaged attack surface, using trusted tools to escalate privileges and persist in environments without raising alarms. This creates an environment where attackers can operate freely, often without detection.

Tactics & Techniques

Detection alone is no longer sufficient to combat these threats. Traditional endpoint detection and response (EDR) solutions are effective against obvious malware but struggle with the nuanced behavior of LOTL attacks. Security teams are left to interpret actions in real-time, often under pressure, and without full context. This challenge is compounded by the speed at which modern attacks occur, often assisted by AI, making it difficult for teams to keep pace.

As attackers become more sophisticated, relying solely on detection mechanisms can lead to significant vulnerabilities. Organizations must shift from reactive measures to a more proactive approach, focusing on understanding their internal attack surface and identifying potential risks associated with trusted tools.

Defensive Measures

To close the gap in security, organizations need to start with a comprehensive Internal Attack Surface Assessment. This assessment will help identify unnecessary access and provide insights into how attackers can exploit trusted tools. By understanding the scope of their internal attack surface, organizations can prioritize their security efforts and reduce potential attack paths.

It's essential to see your environment from the perspective of an attacker. As LOTL attacks become the norm, recognizing how attackers can navigate through your systems using trusted tools is crucial. By taking proactive steps to mitigate these risks, organizations can better protect themselves against evolving threats.