Rule Category

OS-WINDOWS -- Snort has detected traffic targeting vulnerabilities in a Windows-based operating system. This does not include browser traffic or other software on the OS, but attacks against the OS itself. (such as?)

Alert Message

OS-WINDOWS Microsoft Windows Print Spooler remote code execution attempt

Rule Explanation

An attacker can gain full control over a domain controller by exploiting a weakness in the Microsoft Windows Printer Spooler service. Due to improper validation of permissions, an attacker can install a custom driver on the victim machine.

What To Look For

This rule triggers on a remote code execution attempt against the Microsoft Windows Printer Spooler service. Also known as CVE-2021-1675.

Known Usage

No public information

False Positives

No known false positives

Contributors

Cisco Talos Intelligence Group

MITRE ATT&CK Framework

Tactic: Privilege Escalation

Technique: Exploitation for Privilege Escalation

For reference, see the MITRE ATT&CK vulnerability types here: https://attack.mitre.org

Additional Links

Rule Vulnerability

Escalation of Privilege

An Escalation of Privilege (EOP) attack is any attack method that results in a user or application gaining permissions to access resources they normally would not have access to.

CVE Additional Information