OS Credential Dumping: LSA Secrets
Adversaries with SYSTEM access to a host may attempt to access Local Security Authority (LSA) secrets, which can contain a variety of different credential materials, such as credentials for service accounts. LSA secrets are stored in the registry at
HKEY_LOCAL_MACHINE\SECURITY\Policy\Secrets. LSA secrets can also be dumped from memory.
Mimikatz performs credential dumping to obtain account and password information useful in gaining access to additional systems and enterprise network resources. It contains functionality to acquire information about credentials in many ways, including from the LSA.
Ensure that local administrator accounts have complex, unique passwords across all systems on the network.
|Privileged Account Management||
Follow best practices for design and administration of an enterprise network to limit privileged account use across administrative tiers.
Limit credential overlap across accounts and systems by training users and administrators not to use the same password for multiple accounts.
Monitor processes and command-line arguments for program execution that may be indicative of credential dumping. Remote access tools may contain built-in features or incorporate existing tools like Mimikatz. PowerShell scripts also exist that contain credential dumping functionality, such as PowerSploit's Invoke-Mimikatz module, which may require additional logging features to be configured in the operating system to collect necessary information for analysis.
- Passcape. (n.d.). Windows LSA secrets. Retrieved February 21, 2020.
- Microsoft. (2019, February 14). Active Directory administrative tier model. Retrieved February 21, 2020.
- Chad Tilbury. (2017, August 8). 1Windows Credentials: Attack, Mitigation, Defense. Retrieved February 21, 2020.
- Mantvydas Baranauskas. (2019, November 16). Dumping LSA Secrets. Retrieved February 21, 2020.
- Security Response attack Investigation Team. (2019, March 27). Elfin: Relentless Espionage Group Targets Multiple Organizations in Saudi Arabia and U.S.. Retrieved April 10, 2019.
- Ackerman, G., et al. (2018, December 21). OVERRULED: Containing a Potentially Destructive Adversary. Retrieved January 17, 2019.
- F-Secure Labs. (2015, September 17). The Dukes: 7 years of Russian cyberespionage. Retrieved December 10, 2015.
- byt3bl33d3r. (2018, September 8). SMB: Command Reference. Retrieved July 17, 2020.
- US-CERT. (2018, March 16). Alert (TA18-074A): Russian Government Cyber Activity Targeting Energy and Other Critical Infrastructure Sectors. Retrieved June 6, 2018.
- US-CERT. (2017, October 20). Alert (TA17-293A): Advanced Persistent Threat Activity Targeting Energy and Other Critical Infrastructure Sectors. Retrieved November 2, 2017.
- Core Security. (n.d.). Impacket. Retrieved November 2, 2017.
- TrueSec. (n.d.). gsecdump v2.0b5. Retrieved September 29, 2015.
- SecureAuth. (n.d.). Retrieved January 15, 2019.
- Villeneuve, N., Bennett, J. T., Moran, N., Haq, T., Scott, M., & Geers, K. (2014). OPERATION “KE3CHANG”: Targeted Attacks Against Ministries of Foreign Affairs. Retrieved November 12, 2014.
- Smallridge, R. (2018, March 10). APT15 is alive and strong: An analysis of RoyalCli and RoyalDNS. Retrieved April 4, 2018.
- Zanni, A. (n.d.). The LaZagne Project !!!. Retrieved December 14, 2018.
- Symantec Security Response. (2018, July 25). Leafminer: New Espionage Campaigns Targeting Middle Eastern Regions. Retrieved August 28, 2018.
- PwC and BAE Systems. (2017, April). Operation Cloud Hopper: Technical Annex. Retrieved April 13, 2017.
- Twi1ight. (2015, July 11). AD-Pentest-Script - wmiexec.vbs. Retrieved June 29, 2017.
- Deply, B. (n.d.). Mimikatz. Retrieved September 29, 2015.
- Deply, B., Le Toux, V. (2016, June 5). module ~ lsadump. Retrieved August 7, 2017.
- Grafnetter, M. (2015, October 26). Retrieving DPAPI Backup Keys from Active Directory. Retrieved December 19, 2017.
- The Australian Cyber Security Centre (ACSC), the Canadian Centre for Cyber Security (CCCS), the New Zealand National Cyber Security Centre (NZ NCSC), CERT New Zealand, the UK National Cyber Security Centre (UK NCSC) and the US National Cybersecurity and Communications Integration Center (NCCIC). (2018, October 11). Joint report on publicly available hacking tools. Retrieved March 11, 2019.
- Lancaster, T.. (2017, November 14). Muddying the Water: Targeted Attacks in the Middle East. Retrieved March 15, 2018.
- Symantec DeepSight Adversary Intelligence Team. (2018, December 10). Seedworm: Group Compromises Government Agencies, Oil & Gas, NGOs, Telecoms, and IT Firms. Retrieved December 14, 2018.
- Unit 42. (2017, December 15). Unit 42 Playbook Viewer. Retrieved December 20, 2017.
- Davis, S. and Caban, D. (2017, December 19). APT34 - New Targeted Attack in the Middle East. Retrieved December 20, 2017.
- Mandiant. (2018). Mandiant M-Trends 2018. Retrieved July 9, 2018.
- Bromiley, M., et al.. (2019, July 18). Hard Pass: Declining APT34’s Invite to Join Their Professional Network. Retrieved August 26, 2019.
- Nicolas Verdier. (n.d.). Retrieved January 29, 2018.
- Dell SecureWorks Counter Threat Unit Threat Intelligence. (2015, August 5). Threat Group-3390 Targets Organizations for Cyberespionage. Retrieved August 18, 2018.
- Counter Threat Unit Research Team. (2017, June 27). BRONZE UNION Cyberespionage Persists Despite Disclosures. Retrieved July 13, 2017.
- PowerSploit. (n.d.). Retrieved December 4, 2014.