T1036.012 Browser Fingerprint — Detection Rules

Source-backed rule directory

No reviewed association in this snapshot.

Atlas deterministic concepts

No exact concept selected.

Anomaly models

No exact Atlas model in this snapshot.

ATT&CK analytic guidance

DET0898 Detection of Spoofed User-Agent

AN2029 Analytic 2029

Process execution without GUI context (e.g., powershell.exe, wscript.exe) generates HTTP traffic with a spoofed User-Agent mimicking a legitimate browser. No corresponding UI application (e.g., msedge.exe) is active or in parent lineage. The User-Agent deviates from known enterprise baselines or contains spoofed platform indicators. User-Agent strings can be gathered with API calls such as `ShellExecuteW` to open the default browser on a socket to receive an HTTP reply, or by hard coding the User-Agent string for a specific browser.

AN2031 Analytic 2031

Detection of HTTP outbound requests with inconsistent or spoofed User-Agent headers from command-line tools (e.g., curl, wget, python requests) following interactive user shells or scheduled jobs outside of normal user session behavior.

AN2032 Analytic 2032

Observation of scripted network requests (e.g., using osascript, curl, or python) that include mismatched or spoofed browser User-Agent strings compared to the typical macOS Safari or Chrome baseline, especially when triggered by non-interactive launch agents, login hooks, or background daemons.