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ThreatFox: Remcos IOCs

ioc-hunt HIGH ThreatFox
CommonSecurityLogDeviceNetworkEvents
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: 2026-07-08T11:00:00Z · Confidence: high

Hunt Hypothesis

This detection rule identifies adversary activity consistent with the Remcos Remote Access Trojan by monitoring for specific Indicators of Compromise (IOCs) that signal unauthorized remote access and command-and-control communications. Proactively hunting for these signatures in Azure Sentinel is critical to rapidly isolate compromised endpoints before attackers can establish persistence or exfiltrate sensitive data across the organization’s cloud infrastructure.

IOC Summary

Malware Family: Remcos Total IOCs: 4 IOC Types: ip:port

TypeValueThreat TypeFirst SeenConfidence
ip:port89[.]106[.]83[.]75:8015botnet_cc2026-07-0875%
ip:port185[.]115[.]164[.]60:61102botnet_cc2026-07-0875%
ip:port185[.]115[.]164[.]60:7572botnet_cc2026-07-0875%
ip:port185[.]115[.]164[.]59:11322botnet_cc2026-07-0875%

KQL: Ip Hunt

// Hunt for network connections to known malicious IPs
// Source: ThreatFox - Remcos
let malicious_ips = dynamic(["185.115.164.59", "89.106.83.75", "185.115.164.60"]);
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(["185.115.164.59", "89.106.83.75", "185.115.164.60"]);
DeviceNetworkEvents
| where RemoteIP in (malicious_ips)
| project Timestamp, DeviceName, RemoteIP, RemotePort, InitiatingProcessFileName, ActionType
| order by Timestamp desc

Required Data Sources

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

References

False Positive Guidance

Here are four specific false positive scenarios for the ThreatFox: Remcos IOCs detection rule in an enterprise environment, along with suggested filters or exclusions:

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