Living-off-the-Land attack
Living-Off-the-Land (LOTL) refers to a fileless malware cyberattack technique whereby threat actors utilize the available system tools and built-in system features to compromise networks while remaining undetected [1]. Unlike traditional types of cyber assaults with a malware infection, in this case, the attacker does not import external malware into the systems [2]. Instead, cybercriminals use the inbuilt utilities and administrative options available, making it hard even for traditional security features to detect them.
Attack tools
Several legitimate system utilities are commonly employed in LOTL attacks, and these tools, which are integral to operating system functionality or administrative processes, can be misused to execute malicious actions. Some of the most frequently exploited software include [1]:
Detection and prevention techniques
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Advanced monitoring techniques, such as behavior analysis and machine learning, are used to identify unusual system activity that may indicate an ongoing LOTL attack[3]
Several strategies for prevention include:
- Implement Process Detection Rules: Apply detection rules to identify suspicious processes such as PowerShell and Command Prompt triggered by Microsoft Office applications.[2]
- Leverage Advanced Tools: Engage in endpoint monitoring and conduct behavioral analytics to respond to suspicious acts.[3]
- Use User & Entity Behavioral Analytics: Build or acquire automation (such as machine learning models) to continually review all logs to compare current activities against established behavioral baselines and alert on specified anomalies.[2]
- Least Privilege Principle: Grant users only the minimum privileges necessary to perform their job duties.[3]
References
- ↑ 1.0 1.1 F. Barr-Smith, X. Ugarte-Pedrero, M. Graziano, R. Spolaor and I. Martinovic, "Survivalism: Systematic Analysis of Windows Malware Living-Off-The-Land," 2021 IEEE Symposium on Security and Privacy (SP), San Francisco, CA, USA, 2021, pp. 1557-1574, doi: 10.1109/SP40001.2021.00047. keywords: {Privacy;Systematics;Malware;Security;Detection algorithms;Malware;Advanced-Persistent-Threat;Security;Windows;Operating-Systems},
- ↑ 2.0 2.1 2.2 Sudhakar; Kumar, Sushil (2020-01-14). "An emerging threat Fileless malware: a survey and research challenges". Cybersecurity. 3 (1): 1. doi:10.1186/s42400-019-0043-x. ISSN 2523-3246.
- ↑ 3.0 3.1 3.2 "Identifying and Mitigating Living Off the Land Techniques | CISA". www.cisa.gov. 2024-02-07. Retrieved 2024-09-09.
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