System Runtime API Hijacking
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 execute their own malicious payloads by hijacking the way an operating system runs applications. Hijacking execution flow can be for the purposes of persistence since this hijacked execution may reoccur at later points in time. On Android, adversaries may overwrite the standard OS API library with a malicious alternative to hook into core functions to achieve persistence. By doing this, the adversary’s code will be executed every time the overwritten API function is called by an app on the infected device.
Read it on attack.mitre.orgWhat MITRE says you would watch
- AN1800
Correlates (1) modification or replacement of system runtime libraries or API resolution paths, (2) repeated invocation of hijacked APIs across multiple applications, and (3) inconsistent or suppressed outputs from those APIs compared to expected OS-enforced behavior. The defender observes a causal chain where system-level API behavior is altered, resulting in multiple applications exhibiting consistent anomalies in sensor access, permission checks, or system state reporting.
Technique names and descriptions © MITRE ATT&CK®, CC BY 4.0. Not endorsed by MITRE.