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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: 2026-07-04T11:00:00Z · Confidence: high

Hunt Hypothesis

This hypothesis posits that adversaries are actively deploying the Remcos remote access trojan to establish persistent footholds and exfiltrate sensitive data via its known indicators of compromise. The SOC team should proactively hunt for these specific IOCs within Azure Sentinel to rapidly identify early-stage infections before they escalate into broader lateral movement or data breach incidents.

IOC Summary

Malware Family: Remcos Total IOCs: 6 IOC Types: ip:port

TypeValueThreat TypeFirst SeenConfidence
ip:port46[.]151[.]182[.]138:7312botnet_cc2026-07-0475%
ip:port211[.]159[.]223[.]14:21891botnet_cc2026-07-0475%
ip:port185[.]115[.]164[.]60:59802botnet_cc2026-07-0475%
ip:port185[.]115[.]164[.]59:61737botnet_cc2026-07-0475%
ip:port103[.]11[.]41[.]19:4155botnet_cc2026-07-0475%
ip:port103[.]11[.]41[.]19:52462botnet_cc2026-07-0475%

KQL: Ip Hunt

// Hunt for network connections to known malicious IPs
// Source: ThreatFox - Remcos
let malicious_ips = dynamic(["185.115.164.59", "103.11.41.19", "211.159.223.14", "46.151.182.138", "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", "103.11.41.19", "211.159.223.14", "46.151.182.138", "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 5 specific false positive scenarios for the ThreatFox: Remcos IOCs detection rule in an enterprise environment, including suggested filters or exclusions:

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