Possible Telegram API Command and Control DNS Query

PremiumReviewedSigma · Low · v1
Product
windows
Category
dns_query
Author
HuntRule
Published
2026-09-09
Updated
2026-09-09

ATT&CK techniques

C2
  1. Recon

  2. Resource Dev

  3. Initial Access

  4. Execution

  5. Persistence

  6. Priv Esc

  7. Defense Evasion

  8. Cred Access

  9. Discovery

  10. Lateral Movement

  11. Collection

  12. Exfiltration

  13. Impact

What it detects

This rule detects DNS resolution of api.telegram.org, the endpoint used by YoroTrooper for Telegram-based command-and-control and data exfiltration. Multiple threat actors abuse the Telegram Bot API as a resilient web-service C2 channel. Because legitimate applications also use Telegram, this signal is provided at low confidence and should be correlated with other host activity.

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