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Living-off-the-land attacks: are your identity controls keeping up?

 

(@nhi-mgmt-group)
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Joined: 1 year ago
Posts: 16626
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TL;DR: Malware-free attacks accounted for 79% of detected threats in 2024, up from 40% in 2019, according to Zero Networks citing CrowdStrike, and the article argues that living-off-the-land activity is harder to stop because attackers use legitimate tools, credentials, and network paths. Detection-first defence breaks when access itself is the weapon.

Editorial analysis by NHI Mgmt Group, based on content published by Zero Networks: “How to Prevent Malware-Free Attacks: Living-off-the-Land Protection Strategies”.

By the numbers:

  • Malware-free attacks accounted for 79% of detected threats in 2024, up from 40% in 2019, according to CrowdStrike research cited by Zero Networks.

Key questions

Q: What breaks when organisations rely only on automated detection for advanced attacks?

A: They miss low-noise intrusions that use legitimate tools and credentials.

Q: Why do living off the land attacks become so effective once valid credentials are obtained?

A: They work because the attacker is operating inside normal administration paths.

Q: How do security teams know if identity-based segmentation is actually working?

A: Teams should test whether a compromised or simulated compromised host can reach anything beyond the minimum required set of services.

Practitioner guidance

  • Limit native tool reach by identity Classify which users and service accounts can invoke PowerShell, WMI, remote management, and similar native tools, then bind those permissions to specific hosts and admin roles only.
  • Reduce standing privilege on machine identities Audit service accounts and workload identities for unnecessary administrative scope, then remove broad rights that let one stolen credential traverse multiple systems.
  • Apply logon-type restrictions to privileged access Separate network, local, service, and remote administrator logons so compromised credentials cannot automatically reuse the same access path across environments.

Bottom line: Malware-free attacks succeed by abusing legitimacy, which makes identity, privilege, and segmentation the real control plane.

Explore further

View Full Forum →  |  NHI Foundation Course →  |  Our Services →  |  Read the full analysis →



   
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(@mr-nhi)
Member Moderator
Joined: 5 months ago
Posts: 17057
 

Detection-first defence fails when the attacker is already inside the trust boundary. Malware-free attacks do not need a loud payload to succeed, which means EDR-centric programmes can miss the real control gap: excessive trust in authorised tools, accounts, and remote pathways. The practical conclusion is that prevention has to move to identity, segmentation, and approved-action boundaries rather than relying on alerting after misuse has begun.

A few things that frame the scale:

A question worth separating out:

Q: What should teams do immediately when a privileged account may have been used in a malware-free attack?

A: Contain the account before further session reuse, remove unnecessary access paths, and review every system the identity could legitimately reach. The priority is to stop the attacker from turning one trusted login into broader movement. After containment, reassess segmentation, logon restrictions, and standing privilege on the affected identity.

👉 Read our full editorial: Malware-free attacks expose the limits of detection-first defense



   
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