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ThreatFox: DCRat IOCs

ioc-hunt HIGH ThreatFox
CommonSecurityLogDeviceNetworkEvents
backdooriocthreatfoxwin-dcrat
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: 2026-09-17T11:00:00Z · Confidence: high

Hunt Hypothesis

This hunt targets the presence of DCRat malware indicators, a high-severity threat known for establishing persistent backdoor access and executing remote commands on compromised hosts. Proactively hunting for these IOCs in Azure Sentinel allows the SOC to identify and isolate infected endpoints before the adversary can leverage the malware for lateral movement or data exfiltration.

IOC Summary

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

TypeValueThreat TypeFirst SeenConfidence
ip:port45[.]207[.]241[.]47:12159botnet_cc2026-09-1775%
ip:port172[.]111[.]139[.]65:8848botnet_cc2026-09-1775%
ip:port128[.]90[.]105[.]123:7777botnet_cc2026-09-1775%
ip:port102[.]188[.]200[.]238:8848botnet_cc2026-09-1775%

KQL: Ip Hunt

// Hunt for network connections to known malicious IPs
// Source: ThreatFox - DCRat
let malicious_ips = dynamic(["128.90.105.123", "45.207.241.47", "102.188.200.238", "172.111.139.65"]);
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(["128.90.105.123", "45.207.241.47", "102.188.200.238", "172.111.139.65"]);
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

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