This detection identifies adversary behavior where endpoints access newly discovered ELF (Executable and Linkable Format) malware distribution sites via URLhaus-tagged malicious URLs. Proactive hunting is critical in Azure Sentinel to rapidly isolate compromised Linux workloads before these executable payloads establish persistence or initiate lateral movement across the cloud infrastructure.
Threat: elf Total URLs: 24 Active URLs: 10
| URL | Status | Threat | Date Added |
|---|---|---|---|
hxxp://103.130.215.73/spc | online | malware_download | 2026-07-12 |
hxxp://103.130.215.73/i686 | online | malware_download | 2026-07-12 |
hxxp://103.130.215.73/sh4 | online | malware_download | 2026-07-12 |
hxxp://103.130.215.73/ppc | online | malware_download | 2026-07-12 |
hxxp://103.130.215.73/x86 | online | malware_download | 2026-07-12 |
hxxp://103.130.215.73/m68k | online | malware_download | 2026-07-12 |
hxxp://103.130.215.73/mpsl | online | malware_download | 2026-07-12 |
hxxp://205.237.110.232/mpsl | offline | malware_download | 2026-07-12 |
hxxp://205.237.110.232/arm | online | malware_download | 2026-07-12 |
hxxp://129.121.114.124/AfN | offline | malware_download | 2026-07-12 |
hxxp://129.121.114.124/v9EB | offline | malware_download | 2026-07-12 |
hxxp://129.121.114.124/82D6 | offline | malware_download | 2026-07-12 |
hxxp://205.237.110.232/arm5 | online | malware_download | 2026-07-12 |
hxxp://205.237.110.232/arm7 | offline | malware_download | 2026-07-12 |
hxxp://205.237.110.232/mips | online | malware_download | 2026-07-12 |
hxxp://205.237.110.232/aarch64 | offline | malware_download | 2026-07-12 |
hxxp://205.237.110.232/x86 | offline | malware_download | 2026-07-12 |
hxxp://129.121.114.124/XoQw | offline | malware_download | 2026-07-12 |
hxxp://129.121.114.124/wW6d | offline | malware_download | 2026-07-12 |
hxxp://129.121.114.124/CKAK | offline | malware_download | 2026-07-12 |
hxxp://129.121.114.124/QKtU | offline | malware_download | 2026-07-12 |
hxxp://129.121.114.124/Qcl | offline | malware_download | 2026-07-12 |
hxxp://129.121.114.124/uck | offline | malware_download | 2026-07-12 |
hxxp://129.121.114.124/8l1 | offline | malware_download | 2026-07-12 |
// Hunt for DNS resolution of URLhaus malicious domains
// Threat: elf
let malicious_domains = dynamic(["103.130.215.73", "205.237.110.232"]);
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(["103.130.215.73", "205.237.110.232"]);
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: elf Malicious URLs detection rule in an enterprise environment, along with suggested filters or exclusions:
Endpoint Management Agent Updates (e.g., SCCM/Intune)
.elf binaries) for third-party applications like Adobe Acrobat Reader or Java Runtime Environment. These legitimate installer URLs are frequently flagged by URLhaus as “elf” due to their binary nature and high download volume from public CDNs.ccmexec.exe, Microsoft.IntuneManagementExtension) or exclude specific Destination Domains known for hosting enterprise software updates (e.g., *.microsoft.com, *.adobe.com, download.microsoft.com).Automated Security Scanner Scans (e.g., Qualys, Tenable)