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ThreatFox: VShell IOCs

ioc-hunt HIGH ThreatFox
CommonSecurityLogDeviceNetworkEvents
iocthreatfoxwin-vshell
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: 2026-06-30T11:00:00Z · Confidence: high

Hunt Hypothesis

This hypothesis posits that adversaries are leveraging VShell infrastructure to establish persistent command-and-control channels or host malicious payloads within the Azure environment. Proactive hunting is critical because early identification of these specific IOCs enables the SOC team to isolate compromised assets before lateral movement occurs, mitigating potential data exfiltration risks associated with this high-severity threat actor.

IOC Summary

Malware Family: VShell Total IOCs: 5 IOC Types: ip:port

TypeValueThreat TypeFirst SeenConfidence
ip:port115[.]190[.]80[.]27:18085botnet_cc2026-06-30100%
ip:port1[.]117[.]77[.]166:8084botnet_cc2026-06-30100%
ip:port173[.]211[.]46[.]220:53306botnet_cc2026-06-30100%
ip:port45[.]196[.]233[.]245:50001botnet_cc2026-06-29100%
ip:port121[.]37[.]101[.]160:9999botnet_cc2026-06-29100%

KQL: Ip Hunt

// Hunt for network connections to known malicious IPs
// Source: ThreatFox - VShell
let malicious_ips = dynamic(["1.117.77.166", "115.190.80.27", "121.37.101.160", "45.196.233.245", "173.211.46.220"]);
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(["1.117.77.166", "115.190.80.27", "121.37.101.160", "45.196.233.245", "173.211.46.220"]);
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 4 specific false positive scenarios for the ThreatFox: VShell IOCs detection rule in an enterprise environment, along with suggested filters or exclusions:

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