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URLhaus: elf 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: 2026-08-13T23:00:00Z · Confidence: medium

Hunt Hypothesis

This detection identifies adversary activity involving ELF (Executable and Linkable Format) malware distribution through a curated set of 37 known malicious URLs from the URLhaus threat intelligence feed. A SOC team should proactively hunt for these indicators in Azure Sentinel to preemptively block executable downloads that could compromise endpoints before they are widely exploited or added to broader threat lists.

IOC Summary

Threat: elf Total URLs: 37 Active URLs: 33

URLStatusThreatDate Added
hxxp://172.104.49.49/bot.x86_64onlinemalware_download2026-08-13
hxxp://172.104.49.49/bot.mipselonlinemalware_download2026-08-13
hxxp://172.104.49.49/bot.arm7onlinemalware_download2026-08-13
hxxp://172.104.49.49/bot.aarch64onlinemalware_download2026-08-13
hxxp://172.104.49.49/bot.armonlinemalware_download2026-08-13
hxxp://172.104.49.49/bot.ppconlinemalware_download2026-08-13
hxxp://172.104.49.49/bot.sh4onlinemalware_download2026-08-13
hxxp://154.90.70.23/mpslonlinemalware_download2026-08-13
hxxp://172.104.49.49/bot.mipsonlinemalware_download2026-08-13
hxxp://172-104-49-49.ip.linodeusercontent.com/bot.mipsonlinemalware_download2026-08-13
hxxp://160.119.71.134/n2/x86_64onlinemalware_download2026-08-13
hxxp://160.119.71.134/n2/aarch64onlinemalware_download2026-08-13
hxxp://160.119.71.134/n2/sh4onlinemalware_download2026-08-13
hxxp://160.119.71.134/n2/x86onlinemalware_download2026-08-13
hxxp://160.119.71.134/n2/armv4lonlinemalware_download2026-08-13
hxxp://160.119.71.134/n2/armv5lonlinemalware_download2026-08-13
hxxp://160.119.71.134/n2/armv6lonlinemalware_download2026-08-13
hxxp://160.119.71.134/n2/armv7lonlinemalware_download2026-08-13
hxxp://160.119.71.134/n2/m68konlinemalware_download2026-08-13
hxxp://160.119.71.134/n2/sparconlinemalware_download2026-08-13
hxxp://160.119.71.134/n2/ppconlinemalware_download2026-08-13
hxxp://160.119.71.134/n2/mipsonlinemalware_download2026-08-13
hxxp://160.119.71.134/n2/mpslonlinemalware_download2026-08-13
hxxp://2.26.48.37/eclipse.mipselonlinemalware_download2026-08-13
hxxp://2.26.48.37/eclipse.armv7lonlinemalware_download2026-08-13

KQL: Url Dns Hunt

// Hunt for DNS resolution of URLhaus malicious domains
// Threat: elf
let malicious_domains = dynamic(["2.26.48.37", "172-104-49-49.ip.linodeusercontent.com", "154.90.70.23", "160.119.71.134", "172.104.49.49"]);
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(["2.26.48.37", "172-104-49-49.ip.linodeusercontent.com", "154.90.70.23", "160.119.71.134", "172.104.49.49"]);
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 4 specific false positive scenarios for the URLhaus: elf Malicious URLs detection rule, including suggested filters and exclusions tailored for an enterprise environment:

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