Detection of Native API

Technique Detected:  Native API | T1575

ID: DET0717
Domains: Mobile
Analytics: AN1847
Version: 1.0
Created: 21 October 2025
Last Modified: 12 May 2026

Analytics

AN1847

For Android, detect Native API from documented management, network, or vetting evidence; treat state queries as periodic observations rather than real-time events. Correlate Application Permission via Android Enterprise DPC / Application Vetting [DevicePolicyManager.getPermissionGrantState(); PackageManager manifest/requested-permission review]; Application State via Android Enterprise / EMM [Managed package inventory/status and package metadata]; OS API Execution via Application Vetting / Instrumented Dynamic Analysis [Dynamic API/runtime trace: App loads native library (.so) or resolves JNI bridge NOT IN $ApprovedNativeLibraries$ immediately before suspicious lower-level activity (sensor access, file write, network connection) — native code loading before anomalous activity is the]. Alert on a sequence or state change inconsistent with the device/app baseline, approved management policy, or expected user workflow; do not infer unobserved API calls, file/process activity, or payload content from management state alone.

Log Sources
Data Component Name Channel
Application Permission (DC0114) android:DevicePolicyManager DevicePolicyManager.getPermissionGrantState(); PackageManager manifest/requested-permission review
Application State (DC0123) android:EMM Managed package inventory/status and package metadata
OS API Execution (DC0021) mobile:DynamicAnalysis Dynamic API/runtime trace: App loads native library (.so) or resolves JNI bridge NOT IN $ApprovedNativeLibraries$ immediately before suspicious lower-level activity (sensor access, file write, network connection) — native code loading before anomalous activity is the
mobile:DynamicAnalysis Dynamic API/runtime trace: App transitions from managed-code execution into JNI/native function context or attaches native thread,
Mutable Elements
Field Description
ApprovedNativeLibraries Expected native libraries for each app (game engines: Unity/libil2cpp, Unreal; media: libffmpeg; React Native: libreactnative). Derive from app package manifest and vendor documentation. Tightening: strict per-app allowlist.
NativeActivityWindow Default 30s between native library load and anomalous activity. Native code executes synchronously after load.