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ThreatFox: ValleyRAT IOCs

ioc-hunt HIGH ThreatFox
CommonSecurityLogDeviceNetworkEventsUrlClickEvents
backdooriocthreatfoxwin-valley_rat
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: 2026-09-28T23:00:00Z · Confidence: high

Hunt Hypothesis

This hunt targets the presence of known ValleyRAT indicators of compromise, which are frequently used for initial access and remote control in targeted attacks. Proactively hunting for these IOCs in Azure Sentinel allows the SOC to identify compromised endpoints early, preventing the RAT from establishing persistence or exfiltrating sensitive data before it is detected by standard monitoring.

IOC Summary

Malware Family: ValleyRAT Total IOCs: 8 IOC Types: ip:port, url

TypeValueThreat TypeFirst SeenConfidence
ip:port82[.]158[.]89[.]252:7891botnet_cc2026-09-2875%
ip:port82[.]158[.]89[.]252:809botnet_cc2026-09-2875%
ip:port82[.]158[.]89[.]252:9178botnet_cc2026-09-28100%
ip:port108[.]187[.]43[.]208:443botnet_cc2026-09-2875%
urlhxxp://54[.]46[.]28[.]247/getinstall64botnet_cc2026-09-28100%
urlhxxp://43[.]199[.]224[.]15/getinstall64botnet_cc2026-09-28100%
urlhxxp://43[.]106[.]102[.]167/getinstall64botnet_cc2026-09-28100%
ip:port108[.]187[.]43[.]208:449botnet_cc2026-09-28100%

KQL: Ip Hunt

// Hunt for network connections to known malicious IPs
// Source: ThreatFox - ValleyRAT
let malicious_ips = dynamic(["108.187.43.208", "82.158.89.252"]);
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(["108.187.43.208", "82.158.89.252"]);
DeviceNetworkEvents
| where RemoteIP in (malicious_ips)
| project Timestamp, DeviceName, RemoteIP, RemotePort, InitiatingProcessFileName, ActionType
| order by Timestamp desc

KQL: Url Hunt

// Hunt for access to known malicious URLs
// Source: ThreatFox - ValleyRAT
let malicious_urls = dynamic(["http://54.46.28.247/getinstall64", "http://43.199.224.15/getinstall64", "http://43.106.102.167/getinstall64"]);
UrlClickEvents
| where Url has_any (malicious_urls)
| project Timestamp, AccountUpn, Url, ActionType, IsClickedThrough
| order by Timestamp desc

Required Data Sources

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

References

False Positive Guidance

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