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 Winsock local privilege escalation attempt

Rule Explanation

This rule looks for bytes which correspond to bytes in a binary that contains bytes in a binary that disassemble to a specific series of thunk functions.

What To Look For

This rule will trigger when a file is sent via SMTP. Said file contains bytes which correspond to bytes in a binary that disassemble to a specific series of thunk functions.

Known Usage

No public information

False Positives

No known false positives

Contributors

Cisco Talos Intelligence Group

Rule Groups

No rule groups

CVE

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

CVE-2022-24507
Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability.
Details
Severity Base Score7.8
Impact Score5.9 Exploit Score1.8
Confidentiality ImpactHIGH Integrity ImpactHIGH
Availability ImpactHIGH Attack VectorLOCAL
ScopeUNCHANGED User InteractionNONE
Authentication Ease of AccessLOW
Privileges RequiredLOW

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