Varonis Threat Labs discovered 'GhostTree,' an evasion technique leveraging NTFS junctions to create recursive directory loops. By pointing multiple child junctions back to a parent directory, attackers can generate an exponentially large number of file paths, causing EDR and AV recursive scanners to hang and allowing malware to remain undetected.
NTFS Junctions
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GhostTree: Unveiling Path Manipulation Techniques to Bypass Windows Security