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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: 2026-07-14T11:00:00Z · Confidence: medium

Hunt Hypothesis

This hypothesis posits that adversaries are actively leveraging ELF-based malware delivery through compromised or newly registered domains identified by URLhaus to execute initial infection vectors within the network. Proactive hunting for these specific malicious URLs in Azure Sentinel is critical because early detection of ELF payloads can prevent lateral movement and data exfiltration before traditional endpoint signatures trigger alerts on the infected hosts.

IOC Summary

Threat: elf Total URLs: 55 Active URLs: 55

URLStatusThreatDate Added
hxxp://wreath.rapidbranchzi.com/rebirth.arm7onlinemalware_download2026-07-14
hxxp://wreath.rapidbranchzi.com/rebirth.sh4onlinemalware_download2026-07-14
hxxp://wreath.rapidbranchzi.com/rebirth.ppconlinemalware_download2026-07-14
hxxp://wreath.rapidbranchzi.com/rebirth.m68konlinemalware_download2026-07-14
hxxp://wreath.rapidbranchzi.com/rebirth.arm6onlinemalware_download2026-07-14
hxxp://wreath.rapidbranchzi.com/rebirth.arm5onlinemalware_download2026-07-14
hxxp://wreath.rapidbranchzi.com/rebirth.armonlinemalware_download2026-07-14
hxxp://wreath.rapidbranchzi.com/rebirth.x86onlinemalware_download2026-07-14
hxxp://wreath.rapidbranchzi.com/rebirth.mipsonlinemalware_download2026-07-14
hxxp://wreath.rapidbranchzi.com/rebirth.mpslonlinemalware_download2026-07-14
hxxp://gravy.rapidbranchzi.com/bot.aarch64onlinemalware_download2026-07-14
hxxp://organza.rapidbranchzi.com/hiddenbin/zombie.x86onlinemalware_download2026-07-14
hxxp://organza.rapidbranchzi.com/hiddenbin/zombie.i686onlinemalware_download2026-07-14
hxxp://organza.rapidbranchzi.com/hiddenbin/zombie.sh4onlinemalware_download2026-07-14
hxxp://zipper.rapidbranchzi.com/debug.dbgonlinemalware_download2026-07-14
hxxp://gravy.rapidbranchzi.com/main_aarch64onlinemalware_download2026-07-14
hxxp://organza.rapidbranchzi.com/hiddenbin/zombie.spconlinemalware_download2026-07-14
hxxp://gravy.rapidbranchzi.com/bot.mipselonlinemalware_download2026-07-14
hxxp://gravy.rapidbranchzi.com/main_arm7onlinemalware_download2026-07-14
hxxp://gravy.rapidbranchzi.com/bot.mipsonlinemalware_download2026-07-14
hxxp://gravy.rapidbranchzi.com/main_mpslonlinemalware_download2026-07-14
hxxp://gravy.rapidbranchzi.com/main_mipsonlinemalware_download2026-07-14
hxxp://gravy.rapidbranchzi.com/main_x64onlinemalware_download2026-07-14
hxxp://gravy.rapidbranchzi.com/bot.x86_64onlinemalware_download2026-07-14
hxxp://gravy.rapidbranchzi.com/bot.armonlinemalware_download2026-07-14

KQL: Url Dns Hunt

// Hunt for DNS resolution of URLhaus malicious domains
// Threat: elf
let malicious_domains = dynamic(["organza.rapidbranchzi.com", "wreath.rapidbranchzi.com", "gravy.rapidbranchzi.com", "zipper.rapidbranchzi.com"]);
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(["organza.rapidbranchzi.com", "wreath.rapidbranchzi.com", "gravy.rapidbranchzi.com", "zipper.rapidbranchzi.com"]);
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: elf Malicious URLs detection rule in an enterprise environment, along with suggested filters or exclusions:

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