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URLhaus: arm Malicious URLs

ioc-hunt HIGH URLhaus
CommonSecurityLogDnsEvents
iocurlhaus
This rule was pulled from an open-source repository and enriched with AI. Validate in a test environment before deploying to production.
View original rule at URLhaus →
Retrieved: 2026-07-21T23:00:00Z · Confidence: medium

Hunt Hypothesis

This hypothesis posits that adversaries are actively leveraging a specific cluster of ARM-tagged malicious URLs to deliver payloads or conduct phishing campaigns within the organization’s network. Proactive hunting for these indicators in Azure Sentinel is critical because early identification allows the SOC team to block access before widespread compromise occurs, capitalizing on the high severity and known threat intelligence provided by URLhaus.

IOC Summary

Threat: arm Total URLs: 31 Active URLs: 14

URLStatusThreatDate Added
hxxp://129.121.114.124/Bnxvofflinemalware_download2026-07-21
hxxp://129.121.114.124/kLOXofflinemalware_download2026-07-21
hxxp://129.121.110.105/Cvkofflinemalware_download2026-07-21
hxxp://129.121.114.124/tvCronlinemalware_download2026-07-21
hxxp://129.121.114.124/xWronlinemalware_download2026-07-21
hxxp://129.121.110.105/tTdonlinemalware_download2026-07-21
hxxp://129.121.110.105/dNPTonlinemalware_download2026-07-21
hxxp://129.121.110.105/C9Mofflinemalware_download2026-07-21
hxxp://129.121.114.124/AkFSofflinemalware_download2026-07-21
hxxp://129.121.114.124/vuSOofflinemalware_download2026-07-21
hxxp://129.121.110.105/LHMiofflinemalware_download2026-07-21
hxxp://129.121.110.105/23Nonlinemalware_download2026-07-21
hxxp://129.121.110.105/Chfdonlinemalware_download2026-07-21
hxxp://129.121.110.105/2Fr7offlinemalware_download2026-07-21
hxxp://129.121.110.105/EmVPofflinemalware_download2026-07-21
hxxp://129.121.110.105/xu8offlinemalware_download2026-07-21
hxxp://129.121.110.105/fIpofflinemalware_download2026-07-21
hxxp://129.121.114.124/Avx5offlinemalware_download2026-07-21
hxxp://129.121.114.124/3wIofflinemalware_download2026-07-21
hxxp://129.121.114.124/Z31wonlinemalware_download2026-07-21
hxxp://129.121.114.124/03W7onlinemalware_download2026-07-21
hxxp://129.121.110.105/soHofflinemalware_download2026-07-21
hxxp://129.121.114.124/Qlzonlinemalware_download2026-07-21
hxxp://129.121.114.124/cHzonlinemalware_download2026-07-21
hxxp://129.121.110.105/MYPofflinemalware_download2026-07-21

KQL: Url Dns Hunt

// Hunt for DNS resolution of URLhaus malicious domains
// Threat: arm
let malicious_domains = dynamic(["129.121.114.124", "129.121.110.105"]);
DnsEvents
| where Name has_any (malicious_domains)
| project TimeGenerated, Computer, Name, IPAddresses
| order by TimeGenerated desc

KQL: Url Proxy Hunt

// Hunt for web traffic to URLhaus malicious domains
let malicious_domains = dynamic(["129.121.114.124", "129.121.110.105"]);
CommonSecurityLog
| where RequestURL has_any (malicious_domains) or DestinationHostName has_any (malicious_domains)
| project TimeGenerated, SourceIP, RequestURL, DestinationHostName, DeviceAction
| order by TimeGenerated desc

Required Data Sources

Sentinel TableNotes
CommonSecurityLogEnsure this data connector is enabled
DnsEventsEnsure this data connector is enabled

References

False Positive Guidance

Here are specific false positive scenarios for the URLhaus: arm Malicious URLs detection rule in an enterprise environment, along with targeted filtering strategies:

Original source: https://urlhaus.abuse.ch/