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ThreatFox: Remcos IOCs

ioc-hunt HIGH ThreatFox
CommonSecurityLogDeviceNetworkEventsDnsEvents
iocthreatfoxwin-remcos
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: 2026-09-17T23:00:00Z · Confidence: high

Hunt Hypothesis

This hunt targets the presence of known indicators of compromise associated with Remcos, a remote access trojan frequently used by threat actors to establish persistent control over compromised endpoints. Proactively hunting for these IOCs in Azure Sentinel allows the SOC to identify and isolate infected assets before adversaries can leverage the RAT for data exfiltration or lateral movement.

IOC Summary

Malware Family: Remcos Total IOCs: 66 IOC Types: ip:port, domain

TypeValueThreat TypeFirst SeenConfidence
domaincellardoorchocolates.onlinebotnet_cc2026-09-17100%
domainj88.cellardoorchocolates.onlinebotnet_cc2026-09-17100%
domainrr88-link.combotnet_cc2026-09-17100%
domainu888vn.cobotnet_cc2026-09-17100%
domainc2.pinslot.vipbotnet_cc2026-09-17100%
domainc2.saudi365.cobotnet_cc2026-09-17100%
domainc2.slotsite-top10.combotnet_cc2026-09-17100%
domainc2.sunwin.sixtyseven.co.inbotnet_cc2026-09-17100%
domainc2.tvcasino.cobotnet_cc2026-09-17100%
domainc2.w88chinhthuc11.combotnet_cc2026-09-17100%
domainc2.w88saba13.combotnet_cc2026-09-17100%
domainc2.w88thethao26.combotnet_cc2026-09-17100%
domainc2.web8kbetchinhthuc.buzzbotnet_cc2026-09-17100%
domainc2.zuexz.buzzbotnet_cc2026-09-17100%
domainc2[.]68gbsg.combotnet_cc2026-09-17100%
domainc2[.]789joker.combotnet_cc2026-09-17100%
domainc2.akuwin138slot.combotnet_cc2026-09-17100%
domainc2.avbs.inbotnet_cc2026-09-17100%
domainc2.badana.mebotnet_cc2026-09-17100%
domainc2.bioscolombia.com.cobotnet_cc2026-09-17100%
domainc2.dnqj.mybotnet_cc2026-09-17100%
domainc2.emphasis.co.inbotnet_cc2026-09-17100%
domainc2.f5tech.inbotnet_cc2026-09-17100%
domainc2.goourl.mebotnet_cc2026-09-17100%
domainc2.hsdxm.buzzbotnet_cc2026-09-17100%

KQL: Ip Hunt

// Hunt for network connections to known malicious IPs
// Source: ThreatFox - Remcos
let malicious_ips = dynamic(["128.90.122.140"]);
CommonSecurityLog
| where DestinationIP in (malicious_ips) or SourceIP in (malicious_ips)
| project TimeGenerated, SourceIP, DestinationIP, DestinationPort, DeviceAction, Activity
| order by TimeGenerated desc

KQL: Ip Hunt Device

// Hunt in Defender for Endpoint network events
let malicious_ips = dynamic(["128.90.122.140"]);
DeviceNetworkEvents
| where RemoteIP in (malicious_ips)
| project Timestamp, DeviceName, RemoteIP, RemotePort, InitiatingProcessFileName, ActionType
| order by Timestamp desc

KQL: Domain Hunt

// Hunt for DNS queries to known malicious domains
// Source: ThreatFox - Remcos
let malicious_domains = dynamic(["cellardoorchocolates.online", "j88.cellardoorchocolates.online", "rr88-link.com", "u888vn.co", "c2.pinslot.vip", "c2.saudi365.co", "c2.slotsite-top10.com", "c2.sunwin.sixtyseven.co.in", "c2.tvcasino.co", "c2.w88chinhthuc11.com", "c2.w88saba13.com", "c2.w88thethao26.com", "c2.web8kbetchinhthuc.buzz", "c2.zuexz.buzz", "c2.68gbsg.com", "c2.789joker.com", "c2.akuwin138slot.com", "c2.avbs.in", "c2.badana.me", "c2.bioscolombia.com.co", "c2.dnqj.my", "c2.emphasis.co.in", "c2.f5tech.in", "c2.goourl.me", "c2.hsdxm.buzz", "c2.hyperluxe.gg", "c2.j-88.co", "c2.j88viet.com", "c2.kubetvip.asia", "c2.mtoto-wa-kuwinda.de", "c2.news27.co.in", "c2.ok365.org", "c2.32win03.com", "c2.32win08.com", "c2.32win2.com", "backdoor.ok365.org", "backdoor.trangchuae888.com", "c2.trangchuae888.com", "news24-news.sa.com", "s666hp.com", "s8.coach", "kubetvip.asia", "mtoto-wa-kuwinda.de", "news27.co.in", "pinslot.vip", "saudi365.co", "seolink.in.net", "slotsite-top10.com", "sunwin.sixtyseven.co.in", "tvcasino.co"]);
DnsEvents
| where Name has_any (malicious_domains)
| project TimeGenerated, Computer, Name, IPAddresses, QueryType
| order by TimeGenerated desc

Required Data Sources

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

References

False Positive Guidance

Original source: https://threatfox.abuse.ch/browse/malware/win.remcos/