Valid Accounts: Учетные записи по умолчанию
Adversaries may obtain and abuse credentials of a default account as a means of gaining Initial Access, Persistence, Privilege Escalation, or Defense Evasion. Default accounts are those that are built-into an OS, such as the Guest or Administrator accounts on Windows systems. Default accounts also include default factory/provider set accounts on other types of systems, software, or devices, including the root user account in AWS and the default service account in Kubernetes.(Citation: Microsoft Local Accounts Feb 2019)(Citation: AWS Root User)(Citation: Threat Matrix for Kubernetes) Default accounts are not limited to client machines, rather also include accounts that are preset for equipment such as network devices and computer applications whether they are internal, open source, or commercial. Appliances that come preset with a username and password combination pose a serious threat to organizations that do not change it post installation, as they are easy targets for an adversary. Similarly, adversaries may also utilize publicly disclosed or stolen Private Keys or credential materials to legitimately connect to remote environments via Remote Services.(Citation: Metasploit SSH Module)
HyperStack can use default credentials to connect to IPC$ shares on remote machines.(Citation: Accenture HyperStack October 2020)
Stuxnet infected WinCC machines via a hardcoded database server password.(Citation: Symantec W.32 Stuxnet Dossier)
Set and enforce secure password policies for accounts.
Monitor whether default accounts have been activated or logged into. These audits should also include checks on any appliances and applications for default credentials or SSH keys, and if any are discovered, they should be updated immediately.
- undefined. (n.d.). Retrieved April 12, 2019.
- Weizman, Y. (2020, April 2). Threat Matrix for Kubernetes. Retrieved March 30, 2021.
- Amazon. (n.d.). AWS Account Root User. Retrieved April 5, 2021.
- Microsoft. (2018, December 9). Local Accounts. Retrieved February 11, 2019.
- Nicolas Falliere, Liam O. Murchu, Eric Chien. (2011, February). W32.Stuxnet Dossier. Retrieved December 7, 2020.
- US-CERT. (n.d.). Risks of Default Passwords on the Internet. Retrieved April 12, 2019.
- Accenture. (2020, October). Turla uses HyperStack, Carbon, and Kazuar to compromise government entity. Retrieved December 2, 2020.