Suspicious TOLLBOOTH Webshell URI Access

PremiumReviewedSigma · Medium · v1
Category
webserver
Author
HuntRule
Published
2026-09-19
Updated
2026-09-19

ATT&CK techniques

Initial Access → Persistence
  1. Recon

  2. Resource Dev

  3. Execution

  4. Priv Esc

  5. Defense Evasion

  6. Cred Access

  7. Discovery

  8. Lateral Movement

  9. Collection

  10. C2

  11. Exfiltration

  12. Impact

What it detects

This rule detects HTTP requests to the /mywebdll endpoint exposed by the TOLLBOOTH IIS webshell. The operator authenticates to this path to issue commands through the malicious native module, making requests to this fixed URI a reliable compromise indicator.

Related detections9 linkedT1190 — drag to rearrange
Suspicious MOVEit Transfer human2.aspx Web Shell Access (via webserver)
Malicious Web Shell Written to SharePoint LAYOUTS Directory by Worker Process (via file_event)
Malicious Command Shell Spawned by SQL Server via Process Creation (via process_creation)
Possible GoAnywhere MFT Exploitation via Tomcat Spawning Discovery Commands
Suspicious Command Shell Spawned by MSSQL Server Process Indicating Webshell
Malicious MOVEit Transfer Exploitation via X-siLock HTTP Headers (via webserver)
Malicious IIS w3wp Worker Spawning Command Interpreter via SharePoint Web Shell
Suspicious Single-Character Named Executable Launched by Web Server Process (via process_creation)
Malicious MOVEit human2.aspx Web Shell Dropped in wwwroot (via file_event)
Suspicious TOLLBOOTH Webshell URI Access
Pivot detection · T1190 · 9 related

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