This hunt targets adversary behavior where compromised hosts initiate outbound connections to a specific cluster of 18 known malicious URLs associated with the 185-242-3-8 threat signature. Proactively hunting for these indicators in Azure Sentinel is critical because early detection of this high-severity URL activity can prevent data exfiltration and lateral movement before broader network impact occurs.
Threat: 185-242-3-8 Total URLs: 18 Active URLs: 18
| URL | Status | Threat | Date Added |
|---|---|---|---|
hxxp://185.242.3.8/bins/bin.armv4eb | online | malware_download | 2026-06-29 |
hxxp://185.242.3.8/bins/bin.armv4tl | online | malware_download | 2026-06-29 |
hxxp://185.242.3.8/bins/bin.mips | online | malware_download | 2026-06-29 |
hxxp://185.242.3.8/sh | online | malware_download | 2026-06-29 |
hxxp://185.242.3.8/bins/bin.m68k | online | malware_download | 2026-06-29 |
hxxp://185.242.3.8/bins/bin.powerpc | online | malware_download | 2026-06-29 |
hxxp://185.242.3.8/bins/bin.powerpc-440fp | online | malware_download | 2026-06-29 |
hxxp://185.242.3.8/bins/bin.armv7l | online | malware_download | 2026-06-29 |
hxxp://185.242.3.8/bins/bin.armv4l | online | malware_download | 2026-06-29 |
hxxp://185.242.3.8/bins/bin.mips64 | online | malware_download | 2026-06-29 |
hxxp://185.242.3.8/bins/bin.armv6l | online | malware_download | 2026-06-29 |
hxxp://185.242.3.8/bins/bin.i686 | online | malware_download | 2026-06-29 |
hxxp://185.242.3.8/bins/bin.i586 | online | malware_download | 2026-06-29 |
hxxp://185.242.3.8/bins/bin.mipsel | online | malware_download | 2026-06-29 |
hxxp://185.242.3.8/bins/bin.armv5l | online | malware_download | 2026-06-29 |
hxxp://185.242.3.8/bins/bin.x86_64 | online | malware_download | 2026-06-29 |
hxxp://185.242.3.8/bins/bin.i486 | online | malware_download | 2026-06-29 |
hxxp://185.242.3.8/bins/bin.sh4 | online | malware_download | 2026-06-29 |
// Hunt for DNS resolution of URLhaus malicious domains
// Threat: 185-242-3-8
let malicious_domains = dynamic(["185.242.3.8"]);
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(["185.242.3.8"]);
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 |
Here are specific false positive scenarios for the URLhaus: 185-242-3-8 Malicious URLs detection rule, including suggested filters and exclusions tailored for an enterprise environment:
Automated Software Patching Scans
185-242-3-8 tag to verify certificate validity or download minor configuration updates, triggering the rule even though no malicious payload is being delivered.10.x.x.x/24) where the User-Agent string contains “SCCM” or “Ivanti-Endpoint”. Additionally, filter out HTTP 304 (Not Modified) responses which indicate a status check rather than a data transfer.Third-Party Cloud Backup Synchronization
185-242-3-8 cluster) to validate connection health before initiating large data transfers..backup-service.com or similar cloud provider domains, specifically during scheduled maintenance windows (e.g., 02:00–04:00 UTC).Internal Development and CI/CD Pipeline Artifacts