HADES: Detecting Active Directory Attacks via Whole Network Provenance Analytics

• URL: http://arxiv.org/abs/2407.18858v1
• Date: Fri, 26 Jul 2024 16:46:29 GMT
• Title: HADES: Detecting Active Directory Attacks via Whole Network Provenance Analytics
• Authors: Qi Liu, Kaibin Bao, Wajih Ul Hassan, Veit Hagenmeyer,
• Abstract summary: Active Directory (AD) is a top target of Advanced Persistence Threat (APT) actors. We propose HADES, the first PIDS capable of performing accurate causality-based cross-machine tracing. We introduce a novel lightweight authentication anomaly detection model rooted in our analysis of AD attacks.
• Score: 7.203330561731627
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Due to its crucial role in identity and access management in modern enterprise networks, Active Directory (AD) is a top target of Advanced Persistence Threat (APT) actors. Conventional intrusion detection systems (IDS) excel at identifying malicious behaviors caused by malware, but often fail to detect stealthy attacks launched by APT actors. Recent advance in provenance-based IDS (PIDS) shows promises by exposing malicious system activities in causal attack graphs. However, existing approaches are restricted to intra-machine tracing, and unable to reveal the scope of attackers' traversal inside a network. We propose HADES, the first PIDS capable of performing accurate causality-based cross-machine tracing by leveraging a novel concept called logon session based execution partitioning to overcome several challenges in cross-machine tracing. We design HADES as an efficient on-demand tracing system, which performs whole-network tracing only when it first identifies an authentication anomaly signifying an ongoing AD attack, for which we introduce a novel lightweight authentication anomaly detection model rooted in our extensive analysis of AD attacks. To triage attack alerts, we present a new algorithm integrating two key insights we identified in AD attacks. Our evaluations show that HADES outperforms both popular open source detection systems and a prominent commercial AD attack detector.

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