Adversaries may clear artifacts associated with previously established persistence on a host system to remove evidence of their activity. This may involve various actions, such as removing services, deleting executables, Modify Registry, Plist File Modification, or other methods of cleanup to prevent defenders from collecting evidence of their persistent presence.^[1] Adversaries may also delete accounts previously created to maintain persistence (i.e. Create Account).^[2]

In some instances, artifacts of persistence may also be removed once an adversary’s persistence is executed in order to prevent errors with the new instance of the malware.^[3]

References

1. Gross, J. (2016, February 23). Operation Dust Storm. Retrieved December 22, 2021.
2. Nick Biasini. (2022, August 10). Cisco Talos shares insights related to recent cyber attack on Cisco. Retrieved March 9, 2023.
3. Pantazopoulos, N. (2020, June 2). In-depth analysis of the new Team9 malware family. Retrieved December 1, 2020.

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