Drive-By Compromise
Where this stands
No Sigma rule can address this — the telemetry MITRE names has no Sigma logsource behind it.
Sigma has no logsource taxonomy for mobile platforms. MITRE's telemetry here is mobile EDR and device APIs, which no Sigma rule can address.
What the technique is
Adversaries may gain access to a system through a user visiting a website over the normal course of browsing. With this technique, the user's web browser is typically targeted for exploitation, but adversaries may also use compromised websites for non-exploitation behavior such as acquiring an Application Access Token. Multiple ways of delivering exploit code to a browser exist, including: A legitimate website is compromised where adversaries have injected some form of malicious code such as JavaScript, iFrames, and cross-site scripting. Malicious ads are paid for and served through legitimate ad providers. Built-in web application interfaces are leveraged for the insertion of any other kind of object that can be used to display web content or contain a script that executes on the visiting client (e.g. forum posts, comments, and other user controllable web content). Often the website used by an adversary is one visited by a specific community, such as government, a particular industry, or region, where the goal is to compromise a specific user or set of users based on a shared interest. This kind of targeted attack is referred to a strategic web compromise or watering hole attack. There are several known examples of this occurring. Typical drive-by compromise process: 1. A user visits a website that is used to host the adversary controlled content. 2. […]
Read it on attack.mitre.orgWhat MITRE says you would watch
- AN1669
A defender correlates navigation to external web content in a browser or embedded WebView with immediate script-heavy or exploit-preparation network activity, followed by abnormal browser/WebView process behavior, suspicious file or download artifacts, or rapid post-visit capability shifts such as new package install attempts, overlay prompts, permission requests, or outbound command traffic inconsistent with normal browsing.
- AN1670
A defender correlates Safari or embedded web content navigation with short-lived but abnormal web session behavior such as staged redirects, environment fingerprinting, or exploit-preparation fetches, followed by browser/WebView instability, unusual file handling, profile/download prompts, or near-term changes in device or application behavior inconsistent with normal browsing.
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