huntrule

Proxy access to raw paste endpoints on paste.ee and Pastebin-style services

Alerts on proxy requests for raw paste service URLs that can be used to stage or fetch malicious payloads.

FreeReviewedSigma · High · v2
Category
proxy
Author
Florian Roth (Nextron Systems) (SigmaHQ), DRL 1.1
Published
2019-12-05
Updated
2026-07-31
AnalysisDetection

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. C2

  13. Exfiltration

  14. Impact

What it detects

This rule identifies HTTP proxy requests whose URLs contain raw paste paths for multiple paste services, including paste.ee and Pastebin-style “/raw/” endpoints. Attackers commonly use these locations to stage or retrieve secondary-stage content that may be delivered in encoded or otherwise non-obvious form. The detection relies on proxy telemetry capturing the requested URL path (c-uri) and matches specific raw/paste URL patterns.

Reporting behind it

Related detections9 linkedT1071.001 — drag to rearrange
Proxy Downloads Containing /pwndrop/ (PwnDrp Web Server)
Malicious Encrypted Reverse Shell via Netcat and GPG on Linux
Malicious axios NPM Supply Chain C2 Domain Resolution
Suspicious Reverse Shell via Dev TCP or Netcat
Malicious HarborWatch RAT Command and Control Beacon by User Agent (via proxy)
Suspicious UAT-10608 Credential Harvesting C2 Beacon via HTTP
Malicious BadIIS C2 Communication via lwxatisme User-Agent
Possible PS1Bot C2 Beacon With Drive Serial URI Pattern (via proxy)
Suspicious WarmCookie C2 Beacon With Fixed Firefox User-Agent
Proxy access to raw paste endpoints on paste.ee and Pastebin-style services
Pivot detection · T1071.001 · 9 related

Changelog

v2
  1. v2
    Candidate ingested via manual entry.2026-07-31
  2. v1
    No changelog recorded for this version.2026-07-30

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