Malicious C2 Communication via cur1-request User-Agent on macOS
- Product
- macos
- Category
- process_creation
- Author
- HuntRule
- Published
- 2026-09-29
- Updated
- 2026-09-29
ATT&CK techniques
C2Recon
Resource Dev
Initial Access
Execution
Persistence
Priv Esc
Defense Evasion
Cred Access
Discovery
Lateral Movement
Collection
Exfiltration
Impact
What it detects
This rule detects a process command line containing the misspelled user-agent cur1-request, a distinctive command-and-control string used by BlueNoroff implants in the Web3 macOS intrusion analyzed by Huntress. The malware sets this hardcoded user-agent when beaconing to attacker infrastructure. Because the string is unique to this tooling, its presence is a high-confidence C2 indicator.
Reporting behind it
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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