Malicious Keychain Archival for Credential Exfiltration

ATT&CK techniques

Cred Access

Recon
Resource Dev
Initial Access
Execution
Persistence
Priv Esc
Defense Evasion
Cred Access
- T1555.001Keychain
Discovery
Lateral Movement
Collection
C2
Exfiltration
Impact

What it detects

This rule detects a process compressing the macOS Keychains directory with zip, a credential theft step that packages login keychains for exfiltration. Stealing these files gives attackers offline access to stored passwords, keys, and certificates.

Reporting behind it

Related detections9 linkedT1555.001 — drag to rearrange

Malicious Credential Phishing Dialog via osascript

Suspicious macOS Keychain Credential Dumping via security find-generic-password

Suspicious Credential Archive Staging in tmp via process_creation

Suspicious macOS Login Keychain Access via Command Line

Malicious macOS Keychain Credential Theft via security find-generic-password (via process_creation)

Suspicious Non-Wallet Process Accessing Cryptocurrency Wallet Files

Suspicious Dscl Authonly Password Validation via BANSHEE Credential Phishing

Uncommon macOS Keychain Credential Access via Security Utility (via process_creation)

Malicious Keychain Credential Extraction via security Utility

Malicious Keychain Archival for Credential Exfiltration

Pivot detection · T1555.001 · 9 related

Detection content is published as a reviewed draft. Tune thresholds and exclusions against your own telemetry before enabling this rule for alerting.

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