Suspicious Command and Control via Discord or Telegram Bot API

ATT&CK techniques

C2 → Exfiltration

Recon
Resource Dev
Initial Access
Execution
Persistence
Priv Esc
Defense Evasion
Cred Access
Discovery
Lateral Movement
Collection
C2
- T1102.001Dead Drop Resolver
Exfiltration
- T1567.002Exfiltration to Cloud Storage
Impact

What it detects

This rule detects processes connecting to Discord webhook or Telegram bot API endpoints, a command and control and exfiltration channel used by the Tomiris APT. The actors tunneled tasking and stolen data through Discord webhooks and Telegram bot APIs to hide inside allowed messaging traffic. Non-browser processes contacting these bot endpoints strongly suggest abuse of trusted web services for C2.

Reporting behind it

Related detections9 linkedT1567.002 — drag to rearrange

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Rclone SMB Share Exfiltration

Suspicious Data Exfiltration via Rclone to Cloud Storage (via process_creation)

Malicious Data Exfiltration via MEGAcmd

Data Exfiltration to WebDAV Share via curl Upload

Suspicious Data Exfiltration Tool S3 Browser Execution (via process_creation)

Suspicious Restic Cloud Backup Exfiltration via Renamed winupdate Binary via process_creation

Suspicious Data Exfiltration to Telegram Bot API sendDocument (via proxy)

Suspicious Command and Control via Discord or Telegram Bot API

Pivot detection · T1567.002 · 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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