This hypothesis targets potential web-based intrusion attempts where adversaries leverage the IP address 176.65.139.234 to host malicious URLs for phishing, drive-by downloads, or command-and-control communications. Proactively hunting for these specific indicators in Azure Sentinel allows the SOC to identify compromised endpoints or suspicious user activity before the malicious infrastructure is rotated or taken down.
Threat: 176-65-139-234 Total URLs: 2 Active URLs: 2
| URL | Status | Threat | Date Added |
|---|---|---|---|
hxxp://176.65.139.234/main_arm5 | online | malware_download | 2026-09-18 |
hxxp://176.65.139.234/main_ppc | online | malware_download | 2026-09-18 |
// Hunt for DNS resolution of URLhaus malicious domains
// Threat: 176-65-139-234
let malicious_domains = dynamic(["176.65.139.234"]);
DnsEvents
| where Name has_any (malicious_domains)
| project TimeGenerated, Computer, Name, IPAddresses
| order by TimeGenerated desc// Hunt for web traffic to URLhaus malicious domains
let malicious_domains = dynamic(["176.65.139.234"]);
CommonSecurityLog
| where RequestURL has_any (malicious_domains) or DestinationHostName has_any (malicious_domains)
| project TimeGenerated, SourceIP, RequestURL, DestinationHostName, DeviceAction
| order by TimeGenerated desc| Sentinel Table | Notes |
|---|---|
CommonSecurityLog | Ensure this data connector is enabled |
DnsEvents | Ensure this data connector is enabled |
intranet.company.com/legacy-app) uses a hardcoded health-check script that pings a known external monitoring endpoint or a specific CDN edge node (potentially resolving to 176.65.139.234) to verify connectivity before serving user requests.
java.exe) or cmd.exe invoking a known health-check script (e.g., healthcheck.ps1) and the destination URL path matches /status or /ping.176.65.139.234. The URL contains dynamic tokens or build IDs, but the base IP remains consistent.
jenkins-agent.exe, vsts-agent.exe) or a web server process (w3wp.exe, nginx.exe) and the URL contains common webhook path segments like /hooks/, /notify/, or /api/v1/.176.65.139.234. This is a legitimate prefetching behavior, not an active malicious connection.