Windows Bind Link Abuse Lets Attackers Blind EDR and Hide Malware

Bitdefender disclosed that attackers can abuse Windows bind links to create conflicting filesystem views that let malware appear benign to endpoint detection and response tools while executing attacker-controlled content. The researchers described three variants—file-binding, process-binding, and silo-binding—that redirect trusted paths to malicious files, potentially undermining path-based trust decisions, suppressing AMSI visibility, and concealing offensive tools such as Mimikatz from security products.

Microsoft documentation on Sysmon remains relevant for defenders seeking deeper Windows telemetry, but Microsoft reportedly rated the bind-link issue as low severity because exploitation requires local administrator privileges. Bitdefender argued that this prerequisite does not meaningfully reduce risk in real intrusions, where attackers and ransomware operators frequently gain elevated access before moving to defense evasion and persistence.