Detection of Accounts

Technique Detected:  Accounts | T1636.005

ID: DET0635
Domains: Mobile
Analytics: AN1708, AN1709
Version: 1.0
Created: 21 October 2025
Last Modified: 12 May 2026

Analytics

AN1708

For Android, detect Accounts by correlating analyst-visible device/network evidence and management state; use streaming or batched telemetry only where the documented collector is deployed. Correlate API Calls via Application Vetting / Instrumented Dynamic Analysis [Dynamic API/runtime trace: AccountManager.getAccounts() OR getAccountsByType() called > $AccountEnumThreshold$ times within $AccountEnumWindow$ by app NOT IN $ApprovedAuthenticatorApps$]; Network Traffic Flow via Android Enterprise Network Logging / Enterprise VPN [DevicePolicyManager.retrieveNetworkLogs(): DnsEvent / ConnectEvent; VPN flow metadata]; Permissions Request via Android Enterprise DPC / Application Vetting [DevicePolicyManager.getPermissionGrantState(); PackageManager manifest/requested-permission review]. 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
API Calls (DC0112) mobile:DynamicAnalysis Dynamic API/runtime trace: AccountManager.getAccounts() OR getAccountsByType() called > $AccountEnumThreshold$ times within $AccountEnumWindow$ by app NOT IN $ApprovedAuthenticatorApps$
Network Traffic Flow (DC0078) android:EnterpriseNetworkLog DevicePolicyManager.retrieveNetworkLogs(): DnsEvent / ConnectEvent; VPN flow metadata
Permissions Request (DC0116) android:DevicePolicyManager DevicePolicyManager.getPermissionGrantState(); PackageManager manifest/requested-permission review
Mutable Elements
Field Description
ApprovedAuthenticatorApps MDM agent, approved authenticator, sync adapter apps. Minimal.
AccountEnumThreshold Default 5 calls — sync adapters call getAccountsByType once per type; bulk = enumeration.
AccountEnumWindow Default 60s.
AccountUplinkThreshold Default 5KB — account metadata is small; even small upload is significant.
AppCDNList Per-app CDN. Derive by measurement.
ExfilWindow Default 120s.

AN1709

For iOS, detect Accounts by correlating analyst-visible device/network evidence and management state; use streaming or batched telemetry only where the documented collector is deployed. Correlate API Calls via Application Vetting / Instrumented Dynamic Analysis [Dynamic API/runtime trace: SecItemCopyMatching() called with kSecMatchLimitAll]; Application Permission via Application Vetting [Code-signing entitlements and Info.plist privacy usage-description keys]; Network Traffic Content via Enterprise Secure Web Gateway / Proxy [DNS/HTTP(S) inspection or proxy transaction metadata where enterprise decryption/inspection is deployed]. 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
API Calls (DC0112) mobile:DynamicAnalysis Dynamic API/runtime trace: SecItemCopyMatching() called with kSecMatchLimitAll
Application Permission (DC0114) mobile:ApplicationVetting Code-signing entitlements and Info.plist privacy usage-description keys
Network Traffic Content (DC0085) webproxy:applog DNS/HTTP(S) inspection or proxy transaction metadata where enterprise decryption/inspection is deployed
Mutable Elements
Field Description
AccountUplinkThreshold Default 5KB — credential metadata is small.
AppCDNList Per-app CDN. Derive by measurement.
ExfilWindow Default 120s.