T1036.012: Browser Fingerprint

MITRE ATT&CK® Enterprise technique

Description

Adversaries may attempt to blend in with legitimate traffic by spoofing browser and system attributes like operating system, system language, platform, user-agent string, resolution, time zone, etc. The HTTP User-Agent request header is a string that lets servers and network peers identify the application, operating system, vendor, and/or version of the requesting user agent.(Citation: Mozilla User Agent)

Adversaries may gather this information through System Information Discovery or by users navigating to adversary-controlled websites, and then use that information to craft their web traffic to evade defenses.(Citation: Gummy Browsers Targeted Browser Spoofing against State-of-the-Art Fingerprinting Techniques)

Detection

(no detection guidance published)

Data sources

• (none listed)

References

• ATT&CK page: https://attack.mitre.org/techniques/T1036/012
• ATT&CK Enterprise matrix: https://attack.mitre.org/matrices/enterprise/