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ThreatFox: Unknown malware IOCs

ioc-hunt HIGH ThreatFox
CommonSecurityLogDeviceNetworkEventsUrlClickEvents
iocthreatfoxunknown
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: 2026-07-26T11:00:00Z · Confidence: high

Hunt Hypothesis

This detection rule identifies potential unknown malware threats by monitoring for 24 specific indicators of compromise (IOCs) that may evade traditional signature-based defenses. Proactively hunting for these signals in Azure Sentinel is critical to rapidly isolate emerging threats before they establish persistence or propagate laterally across the enterprise network.

IOC Summary

Malware Family: Unknown malware Total IOCs: 24 IOC Types: ip:port, url

TypeValueThreat TypeFirst SeenConfidence
ip:port103[.]233[.]8[.]39:5216botnet_cc2026-07-26100%
ip:port103[.]233[.]8[.]39:19594botnet_cc2026-07-26100%
ip:port103[.]233[.]8[.]39:8000botnet_cc2026-07-26100%
ip:port103[.]233[.]8[.]46:3443botnet_cc2026-07-26100%
ip:port103[.]233[.]8[.]46:3232botnet_cc2026-07-26100%
ip:port5[.]181[.]181[.]12:5443botnet_cc2026-07-2675%
ip:port199[.]246[.]88[.]101:5432botnet_cc2026-07-2675%
ip:port103[.]233[.]8[.]46:5003botnet_cc2026-07-26100%
ip:port20[.]2[.]161[.]33:6378botnet_cc2026-07-26100%
ip:port20[.]2[.]161[.]33:22botnet_cc2026-07-26100%
ip:port103[.]233[.]8[.]46:19594botnet_cc2026-07-26100%
ip:port103[.]233[.]8[.]46:8000botnet_cc2026-07-26100%
ip:port20[.]2[.]161[.]33:8001botnet_cc2026-07-26100%
ip:port20[.]2[.]161[.]33:80botnet_cc2026-07-26100%
ip:port20[.]196[.]147[.]118:3232botnet_cc2026-07-26100%
ip:port107[.]175[.]227[.]55:8888botnet_cc2026-07-26100%
ip:port20[.]196[.]147[.]118:22botnet_cc2026-07-26100%
ip:port107[.]175[.]227[.]55:22botnet_cc2026-07-26100%
ip:port107[.]175[.]227[.]55:3232botnet_cc2026-07-26100%
urlhxxps://tecnotetto.ch/it/payload_delivery2026-07-2690%
ip:port35[.]206[.]101[.]37:7443botnet_cc2026-07-26100%
ip:port111[.]170[.]148[.]134:28888botnet_cc2026-07-26100%
urlhxxps://eco-megalabs.com/payload_delivery2026-07-2690%
ip:port60[.]205[.]115[.]92:44322botnet_cc2026-07-25100%

KQL: Ip Hunt

// Hunt for network connections to known malicious IPs
// Source: ThreatFox - Unknown malware
let malicious_ips = dynamic(["107.175.227.55", "20.196.147.118", "103.233.8.39", "60.205.115.92", "103.233.8.46", "20.2.161.33", "199.246.88.101", "111.170.148.134", "35.206.101.37", "5.181.181.12"]);
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(["107.175.227.55", "20.196.147.118", "103.233.8.39", "60.205.115.92", "103.233.8.46", "20.2.161.33", "199.246.88.101", "111.170.148.134", "35.206.101.37", "5.181.181.12"]);
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 - Unknown malware
let malicious_urls = dynamic(["https://tecnotetto.ch/it/", "https://eco-megalabs.com/"]);
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

Here are 5 specific false positive scenarios for the ThreatFox: Unknown malware IOCs detection rule, including targeted filters and exclusions:

Original source: https://threatfox.abuse.ch/browse/malware/unknown/