Detection of Call Control

Technique Detected:  Call Control | T1616

ID: DET0703
Domains: Mobile
Analytics: AN1822
Version: 1.0
Created: 21 October 2025
Last Modified: 12 May 2026

Analytics

AN1822

For Android, detect Call Control 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]; File Modification via Application Vetting / Forensic Acquisition [Dynamic filesystem trace or acquired app-container/filesystem artifacts: App inserts, updates, or deletes call log records via CallLog.Calls ContentProvider immediately after call-control action — call log tampering to conceal interception]; OS API Execution via Application Vetting / Instrumented Dynamic Analysis [Dynamic API/runtime trace: App invokes TelecomManager.answerCall(), placeCall(), endCall(), or ConnectionService call-handling operations without corresponding user-initiated call UI interaction]. 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
File Modification (DC0061) mobile:ForensicArtifacts Dynamic filesystem trace or acquired app-container/filesystem artifacts: App inserts, updates, or deletes call log records via CallLog.Calls ContentProvider immediately after call-control action — call log tampering to conceal interception
OS API Execution (DC0021) mobile:DynamicAnalysis Dynamic API/runtime trace: App invokes TelecomManager.answerCall(), placeCall(), endCall(), or ConnectionService call-handling operations without corresponding user-initiated call UI interaction
Mutable Elements
Field Description
ApprovedTelecomApps Default dialer, approved VoIP apps, enterprise call manager. Derive from MDM catalog. Tightening: system dialer and MDM-pushed VoIP only.
CallInteractionThreshold Default 10s between incoming call event and app call-answer action without user UI. Silent answer within 10s of ring without user touch is covert.