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ThreatFox: Unknown Loader IOCs

ioc-hunt HIGH ThreatFox
DnsEvents
iocthreatfoxunknown_loader
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 ThreatFox →
Retrieved: 2026-08-28T11:00:00Z · Confidence: high

Hunt Hypothesis

This detection identifies adversary activity involving the execution of unknown loader processes that match a curated set of 200 Indicators of Compromise (IOCs). Proactive hunting for these signatures in Azure Sentinel is critical to uncover early-stage command-and-control or fileless attacks that may evade standard signature-based defenses.

IOC Summary

Malware Family: Unknown Loader Total IOCs: 200 IOC Types: domain

TypeValueThreat TypeFirst SeenConfidence
domainwageandhourfirm.compayload_delivery2026-08-28100%
domainviphomedesign.compayload_delivery2026-08-28100%
domainvisitcastelsaraceno.infopayload_delivery2026-08-28100%
domainvivaschool.espayload_delivery2026-08-28100%
domainvoicesystems.itpayload_delivery2026-08-28100%
domainvysoka-bd.czpayload_delivery2026-08-28100%
domainveeble.itpayload_delivery2026-08-28100%
domainverlago.grpayload_delivery2026-08-28100%
domainvespapizza.hupayload_delivery2026-08-28100%
domainvethvordan.compayload_delivery2026-08-28100%
domainvhncare.compayload_delivery2026-08-28100%
domainviacatravel.compayload_delivery2026-08-28100%
domainviadavid.nlpayload_delivery2026-08-28100%
domainviaexperience.compayload_delivery2026-08-28100%
domainvinsidan.ispayload_delivery2026-08-28100%
domainuneautreattitude.frpayload_delivery2026-08-28100%
domainunicascomotu.compayload_delivery2026-08-28100%
domainunleashed.grpayload_delivery2026-08-28100%
domainupf-shop.compayload_delivery2026-08-28100%
domainurban-ks.compayload_delivery2026-08-28100%
domainuwebbztechnology.compayload_delivery2026-08-28100%
domainvaips.netpayload_delivery2026-08-28100%
domainvaledinossauros.com.brpayload_delivery2026-08-28100%
domainvandengaart.compayload_delivery2026-08-28100%
domainvapestoreau.compayload_delivery2026-08-28100%

KQL: Domain Hunt

// Hunt for DNS queries to known malicious domains
// Source: ThreatFox - Unknown Loader
let malicious_domains = dynamic(["wageandhourfirm.com", "viphomedesign.com", "visitcastelsaraceno.info", "vivaschool.es", "voicesystems.it", "vysoka-bd.cz", "veeble.it", "verlago.gr", "vespapizza.hu", "vethvordan.com", "vhncare.com", "viacatravel.com", "viadavid.nl", "viaexperience.com", "vinsidan.is", "uneautreattitude.fr", "unicascomotu.com", "unleashed.gr", "upf-shop.com", "urban-ks.com", "uwebbztechnology.com", "vaips.net", "valedinossauros.com.br", "vandengaart.com", "vapestoreau.com", "tsnv.de", "tungkechuyencuoi.com", "turkishindirim.com", "ufabetufabet.org", "umen.es", "unddsglobalco.com", "tosanstore.com", "tpronails.com", "tracktec.cl", "transparenz-radar.org", "trenchsniper.fun", "trendigtjustnu.se", "thethinkubator.org", "tjbowden.com.au", "toddlermealideas.com", "tommyrobitaille.com", "topshelfexperts.com", "th-gw.com", "thebraslavskys.com", "thehomestore-parsons.com", "thelastreformation.co.uk", "thepremere.com", "theresewalsh.com", "thermomixbrasil.com.br", "telusnetwork.com"]);
DnsEvents
| where Name has_any (malicious_domains)
| project TimeGenerated, Computer, Name, IPAddresses, QueryType
| order by TimeGenerated desc

Required Data Sources

Sentinel TableNotes
DnsEventsEnsure this data connector is enabled

References

False Positive Guidance

Here are specific false positive scenarios and corresponding filters for the ThreatFox: Unknown Loader IOCs detection rule:

Original source: https://threatfox.abuse.ch/browse/malware/unknown_loader/