Suspicious Infostealer C2 Heartbeat to bot heartbeat Endpoint

ATT&CK techniques

Exfiltration

Recon
Resource Dev
Initial Access
Execution
Persistence
Priv Esc
Defense Evasion
Cred Access
Discovery
Lateral Movement
Collection
C2
Exfiltration
- T1041Exfiltration Over C2 Channel
Impact

What it detects

This rule detects outbound POST requests to a bot heartbeat command and control endpoint used by the macOS infostealer to check in with its operator. The implant beacons to a heartbeat path to receive tasking and confirm the victim is live. Regular POST traffic to this endpoint indicates an active infostealer implant maintaining C2.

Reporting behind it

Related detections9 linkedT1041 — drag to rearrange

Malicious AWS Credential Exfiltration via Curl or Wget in Process Creation

Malicious curl Exfiltration to Attacker Upload Endpoint on macOS (via process_creation)

Suspicious Outlook Process Spawning Network Utilities for NotDoor C2 (via process_creation)

Possible FakeWallet Wallet Exfiltration via Structured POST Parameters (via proxy)

Malicious FakeWallet Crypto Stealer C2 via Rsakey Endpoints (via proxy)

Possible Malicious MCP Server Credential Exfiltration via DevTools-Assistant Agent (via proxy)

Suspicious curl POST Exfiltration of Archive from tmp Staging Folder via process_creation

Malicious Phishing Data Exfiltration to SheetBest API by GitBait Campaign (via proxy)

Malicious PowerShell Base64 Exfiltration to save.php via EKZ Stealer

Suspicious Infostealer C2 Heartbeat to bot heartbeat Endpoint

Pivot detection · T1041 · 9 related

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

Full detection rule

Unlock this rule to view and copy it

The detection logic is included with a plan. Everything else — context, mappings and implementation details — stays free on this page.

Sign in for 3 free unlocks

Signing in gives you 3 unlocks to spend on any rule in the library. No card, and they do not expire.

Also included

Unlocked rules convert on this page — to Splunk SPL or Splunk — Raw Index SPL or Microsoft Sentinel KQL or Microsoft Sentinel ASIM ASIM KQL or Microsoft Defender XDR KQL or Elastic Security KQL or Elastic Security Lucene or Elastic Security ES|QL or CrowdStrike Falcon CQL or SentinelOne PowerQuery or Palo Alto Cortex XDR XQL or Carbon Black Cloud Platform Search or Carbon Black EDR Process Search or Google Security Operations UDM Search or IBM QRadar AQL or Sumo Logic Cloud SIEM Rules expression or Rapid7 InsightIDR LEQL or Graylog Search or OpenSearch Lucene or OpenSearch PPL PPL or Grafana Loki LogQL or SQLite SQL or Zircolite SQLite — with the log-source profile the engine picked, the field map it used, and everything it could not express. Converting a rule you have unlocked costs no further credit.

See it run on a free rule →Convert your own rule →