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 Kernel Cryptography Driver privilege escalation attempt

Rule Explanation

This rule detects the attempted download of a file used to exploit a privilege escalation vulnerability in vulnerable versions of Microsoft Windows Kernel Cryptography driver by detecting malicious values used to exploit the vulnerability.

What To Look For

This rule detects the attempted download of a file used to exploit a privilege escalation vulnerability in vulnerable versions of Microsoft Windows Kernel Cryptography driver.

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

Buffer Overflow

Buffer Overflows occur when a memory location is filled past its expected boundaries. Computer attackers target systems without proper terminating conditions on buffers, which then write the additional information in other locations in memory, overwriting what is there. This could corrupt the data, making the system behave erratically or crash. The new information could include malicious executable code, which might be executed.

CVE Additional Information