Detection of Keychain

Technique Detected:  Keychain | T1634.001

ID: DET0664
Domains: Mobile
Analytics: AN1757
Version: 1.0
Created: 21 October 2025
Last Modified: 12 May 2026

Analytics

AN1757

For iOS, detect Keychain by correlating analyst-visible device/network evidence and management state; use streaming or batched telemetry only where the documented collector is deployed. Correlate Application State via Apple MDM [InstalledApplicationList / ManagedApplicationList]; Host Status via Apple MDM [DeviceInformation / SecurityInfo / ProfileList / restrictions and compliance queries]; Network Traffic Flow via Apple Network Extension / Enterprise VPN [NEFilterFlow / per-app VPN / secure-web-gateway flow metadata]. 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 State (DC0123) iOS:MDM InstalledApplicationList / ManagedApplicationList
Host Status (DC0018) iOS:MDM DeviceInformation / SecurityInfo / ProfileList / restrictions and compliance queries
Network Traffic Flow (DC0078) iOS:NetworkExtension NEFilterFlow / per-app VPN / secure-web-gateway flow metadata
Mutable Elements
Field Description
CredentialStoreAppList Banking, enterprise, password manager, email bundle IDs.
CredentialStoreAppCount Default 2.
CredentialDumpMin Default 10KB.
CredentialDumpMax Default 500KB.
AppCDNList Per-device CDN baseline.
ExfilWindow Default 300s.