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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: 2026-09-18T23:00:01Z · Confidence: high

Hunt Hypothesis

This hypothesis targets the presence of Remcos Remote Access Trojan indicators, which adversaries deploy to establish persistent control, execute arbitrary commands, and exfiltrate sensitive data from compromised endpoints. Proactively hunting for these IOCs in Azure Sentinel is critical to identify stealthy persistence mechanisms and lateral movement attempts before attackers can fully leverage the RAT to escalate privileges or extract high-value assets.

IOC Summary

Malware Family: Remcos Total IOCs: 72 IOC Types: ip:port, domain

TypeValueThreat TypeFirst SeenConfidence
ip:port155[.]103[.]71[.]126:4143botnet_cc2026-09-18100%
domainu88bet.usbotnet_cc2026-09-18100%
domainuu888.eu.combotnet_cc2026-09-18100%
domainxoso66v.combotnet_cc2026-09-18100%
domain123bcasino.usbotnet_cc2026-09-18100%
domain23win.net.imbotnet_cc2026-09-18100%
domainee88.blogbotnet_cc2026-09-18100%
domaingo99com.bluebotnet_cc2026-09-18100%
domainkuwin686.combotnet_cc2026-09-18100%
domaintg88vn.onlinebotnet_cc2026-09-18100%
domaintopcm88.netbotnet_cc2026-09-18100%
domainvnf168.cobotnet_cc2026-09-18100%
domainc168vip.combotnet_cc2026-09-18100%
domainccm888.combotnet_cc2026-09-18100%
domaincm88.devbotnet_cc2026-09-18100%
domaincm88.techbotnet_cc2026-09-18100%
domaincm88asia.combotnet_cc2026-09-18100%
domainkhietminhbakery.combotnet_cc2026-09-18100%
domainlwf168.combotnet_cc2026-09-18100%
domainnew888k.combotnet_cc2026-09-18100%
domainok9111.combotnet_cc2026-09-18100%
domainok9a.co.combotnet_cc2026-09-18100%
domainok9vip.clubbotnet_cc2026-09-18100%
domainsc88vi.combotnet_cc2026-09-18100%
domainc168nee.combotnet_cc2026-09-18100%

KQL: Ip Hunt

// Hunt for network connections to known malicious IPs
// Source: ThreatFox - Remcos
let malicious_ips = dynamic(["82.29.92.60", "155.103.71.126"]);
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(["82.29.92.60", "155.103.71.126"]);
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(["u88bet.us", "uu888.eu.com", "xoso66v.com", "123bcasino.us", "23win.net.im", "ee88.blog", "go99com.blue", "kuwin686.com", "tg88vn.online", "topcm88.net", "vnf168.co", "c168vip.com", "ccm888.com", "cm88.dev", "cm88.tech", "cm88asia.com", "khietminhbakery.com", "lwf168.com", "new888k.com", "ok9111.com", "ok9a.co.com", "ok9vip.club", "sc88vi.com", "c168nee.com", "c168c.net", "login.fly88-vip1.com", "new88.health", "open88.tours", "sc88.actor", "1f168.com", "78winone.com", "c2.spotmarkettoptan.com", "cm88.host", "fly88-vip1.com", "jun88online.co", "jxzc1688.com", "www.albader-group.cam", "www.albader-groupbackup.cam", "www.albader-groupbackup1.cam", "www.edibeckconsult.cam", "bahira.me", "bj88.sarl", "bj88ac.co", "edhardyoutlet.us", "fifa555god.com", "fifa55av.com", "remoo7.theworkpc.com", "123b.pictures", "789k.media", "akuwin888slot.com"]);
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/