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ThreatFox: AsyncRAT IOCs

ioc-hunt HIGH ThreatFox
CommonSecurityLogDeviceNetworkEvents
backdooriocthreatfoxwin-asyncrat
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: 2026-07-16T11:00:00Z · Confidence: high

Hunt Hypothesis

This hunt targets adversary behavior characterized by the execution of AsyncRAT remote access trojan components and their communication with known malicious infrastructure across the organization’s endpoints. Proactively hunting for these specific IOCs in Azure Sentinel is critical to rapidly identify early-stage lateral movement and command-and-control activities before they escalate into full-scale data exfiltration incidents.

IOC Summary

Malware Family: AsyncRAT Total IOCs: 10 IOC Types: ip:port

TypeValueThreat TypeFirst SeenConfidence
ip:port64[.]89[.]161[.]190:6606botnet_cc2026-07-1675%
ip:port5[.]56[.]25[.]238:6606botnet_cc2026-07-1675%
ip:port5[.]56[.]25[.]238:6723botnet_cc2026-07-1675%
ip:port5[.]56[.]25[.]238:7707botnet_cc2026-07-1675%
ip:port37[.]60[.]239[.]250:7777botnet_cc2026-07-1675%
ip:port217[.]60[.]241[.]10:6606botnet_cc2026-07-1675%
ip:port207[.]180[.]250[.]181:20300botnet_cc2026-07-1675%
ip:port147[.]124[.]219[.]0:8805botnet_cc2026-07-1675%
ip:port104[.]168[.]134[.]25:6606botnet_cc2026-07-1675%
ip:port5[.]56[.]25[.]178:7019botnet_cc2026-07-16100%

KQL: Ip Hunt

// Hunt for network connections to known malicious IPs
// Source: ThreatFox - AsyncRAT
let malicious_ips = dynamic(["5.56.25.238", "104.168.134.25", "37.60.239.250", "217.60.241.10", "64.89.161.190", "147.124.219.0", "207.180.250.181", "5.56.25.178"]);
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(["5.56.25.238", "104.168.134.25", "37.60.239.250", "217.60.241.10", "64.89.161.190", "147.124.219.0", "207.180.250.181", "5.56.25.178"]);
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: AsyncRAT IOCs detection rule in an enterprise environment, along with suggested filters or exclusions:

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