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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: 2026-08-12T11:00:00Z · Confidence: high

Hunt Hypothesis

This detection identifies adversary activity involving specific Indicators of Compromise (IOCs) linked to the VShell remote access tool, which is frequently leveraged by threat actors to establish persistent command and control channels within compromised networks. Proactively hunting for these IOCs in Azure Sentinel allows the SOC team to rapidly detect early-stage lateral movement or unauthorized remote sessions before adversaries can fully entrench their presence across the environment.

IOC Summary

Malware Family: VShell Total IOCs: 9 IOC Types: ip:port

TypeValueThreat TypeFirst SeenConfidence
ip:port156[.]248[.]73[.]84:8081botnet_cc2026-08-12100%
ip:port43[.]128[.]130[.]45:56502botnet_cc2026-08-12100%
ip:port156[.]248[.]73[.]84:80botnet_cc2026-08-12100%
ip:port139[.]129[.]23[.]109:8085botnet_cc2026-08-12100%
ip:port139[.]129[.]23[.]109:8084botnet_cc2026-08-12100%
ip:port142[.]4[.]58[.]48:1224botnet_cc2026-08-12100%
ip:port121[.]89[.]169[.]8:8081botnet_cc2026-08-12100%
ip:port106[.]75[.]178[.]185:8084botnet_cc2026-08-12100%
ip:port180[.]76[.]105[.]117:8085botnet_cc2026-08-12100%

KQL: Ip Hunt

// Hunt for network connections to known malicious IPs
// Source: ThreatFox - VShell
let malicious_ips = dynamic(["106.75.178.185", "139.129.23.109", "180.76.105.117", "43.128.130.45", "121.89.169.8", "156.248.73.84", "142.4.58.48"]);
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(["106.75.178.185", "139.129.23.109", "180.76.105.117", "43.128.130.45", "121.89.169.8", "156.248.73.84", "142.4.58.48"]);
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 specific false positive scenarios and corresponding filters for the ThreatFox: VShell IOCs detection rule:

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