Adversaries may acquire user credentials from third-party password managers.^[1] Password managers are applications designed to store user credentials, normally in an encrypted database. Credentials are typically accessible after a user provides a master password that unlocks the database. After the database is unlocked, these credentials may be copied to memory. These databases can be stored as files on disk.^[1]

Adversaries may acquire user credentials from password managers by extracting the master password and/or plain-text credentials from memory.^[2],[3] Adversaries may extract credentials from memory via Exploitation for Credential Access.^[4]
Adversaries may also try brute forcing via Password Guessing to obtain the master password of a password manager.^[5]

References

1. ise. (2019, February 19). Password Managers: Under the Hood of Secrets Management. Retrieved January 22, 2021.
2. Dantzig, M. v., Schamper, E. (2019, December 19). Operation Wocao: Shining a light on one of China’s hidden hacking groups. Retrieved October 8, 2020.
3. Lee, C., Schoreder, W. (n.d.). KeeThief. Retrieved February 8, 2021.
4. National Vulnerability Database. (2019, October 9). CVE-2019-3610 Detail. Retrieved April 14, 2021.
5. Dahan, A. et al. (2019, December 11). DROPPING ANCHOR: FROM A TRICKBOT INFECTION TO THE DISCOVERY OF THE ANCHOR MALWARE. Retrieved September 10, 2020.

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