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ThreatFox: Mirai IOCs

ioc-hunt HIGH ThreatFox
CommonSecurityLogDeviceFileEventsDeviceNetworkEventsDnsEventsUrlClickEvents
elf-miraiiocthreatfox
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: 2026-06-28T11:00:00Z · Confidence: high

Hunt Hypothesis

This hunt detects adversary behavior consistent with the Mirai botnet by identifying network connections to a specific set of 18 known Indicators of Compromise (IOCs) that signal active malware communication or command-and-control activity. Proactively hunting for these signatures in Azure Sentinel is critical because early identification allows the SOC team to isolate infected IoT devices before they can be leveraged for large-scale DDoS attacks or lateral movement within the enterprise network.

IOC Summary

Malware Family: Mirai Total IOCs: 18 IOC Types: sha256_hash, ip:port, url, domain

TypeValueThreat TypeFirst SeenConfidence
ip:port103[.]253[.]212[.]175:6868botnet_cc2026-06-2875%
domainnzr.narxzz.biz.idbotnet_cc2026-06-28100%
ip:port91[.]92[.]42[.]125:9111botnet_cc2026-06-28100%
domainjaffacakes118-is-a-stupid-nigger.onlinebotnet_cc2026-06-28100%
ip:port46[.]8[.]236[.]234:80botnet_cc2026-06-28100%
ip:port46[.]8[.]236[.]234:123botnet_cc2026-06-28100%
ip:port46[.]8[.]236[.]234:25565botnet_cc2026-06-28100%
ip:port91[.]92[.]40[.]63:9111botnet_cc2026-06-28100%
ip:port141[.]11[.]88[.]109:6767botnet_cc2026-06-28100%
domainhigher.makeupbotnet_cc2026-06-28100%
ip:port46[.]8[.]238[.]161:80botnet_cc2026-06-28100%
ip:port46[.]8[.]238[.]161:123botnet_cc2026-06-28100%
ip:port46[.]8[.]238[.]161:25565botnet_cc2026-06-28100%
domainabusereports.lolbotnet_cc2026-06-27100%
urlhxxp://89[.]32[.]41[.]16/bins/pmipspayload_delivery2026-06-2775%
urlhxxp://89[.]32[.]41[.]16/bins/pmpslpayload_delivery2026-06-2775%
sha256_hash37733e5966cf4129c79c419725fbc2f7bcdac446683d966107bb3065d959422fpayload2026-06-2780%
sha256_hash3af414ef65da7494da9604e1a1dcf1a2a92234a4c8fd2fa11bb292970ea4282epayload2026-06-2780%

KQL: Ip Hunt

// Hunt for network connections to known malicious IPs
// Source: ThreatFox - Mirai
let malicious_ips = dynamic(["91.92.42.125", "46.8.236.234", "103.253.212.175", "46.8.238.161", "91.92.40.63", "141.11.88.109"]);
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(["91.92.42.125", "46.8.236.234", "103.253.212.175", "46.8.238.161", "91.92.40.63", "141.11.88.109"]);
DeviceNetworkEvents
| where RemoteIP in (malicious_ips)
| project Timestamp, DeviceName, RemoteIP, RemotePort, InitiatingProcessFileName, ActionType
| order by Timestamp desc

KQL: Domain Hunt

// Hunt for DNS queries to known malicious domains
// Source: ThreatFox - Mirai
let malicious_domains = dynamic(["nzr.narxzz.biz.id", "jaffacakes118-is-a-stupid-nigger.online", "higher.makeup", "abusereports.lol"]);
DnsEvents
| where Name has_any (malicious_domains)
| project TimeGenerated, Computer, Name, IPAddresses, QueryType
| order by TimeGenerated desc

KQL: Url Hunt

// Hunt for access to known malicious URLs
// Source: ThreatFox - Mirai
let malicious_urls = dynamic(["http://89.32.41.16/bins/pmips", "http://89.32.41.16/bins/pmpsl"]);
UrlClickEvents
| where Url has_any (malicious_urls)
| project Timestamp, AccountUpn, Url, ActionType, IsClickedThrough
| order by Timestamp desc

KQL: Hash Hunt

// Hunt for files matching known malicious hashes
// Source: ThreatFox - Mirai
let malicious_hashes = dynamic(["37733e5966cf4129c79c419725fbc2f7bcdac446683d966107bb3065d959422f", "3af414ef65da7494da9604e1a1dcf1a2a92234a4c8fd2fa11bb292970ea4282e"]);
DeviceFileEvents
| where SHA256 in (malicious_hashes) or SHA1 in (malicious_hashes) or MD5 in (malicious_hashes)
| project Timestamp, DeviceName, FileName, FolderPath, SHA256, InitiatingProcessFileName
| order by Timestamp desc

Required Data Sources

Sentinel TableNotes
CommonSecurityLogEnsure this data connector is enabled
DeviceFileEventsEnsure this data connector is enabled
DeviceNetworkEventsEnsure this data connector is enabled
DnsEventsEnsure 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: Mirai IOCs detection rule, tailored for a legitimate enterprise environment:

Original source: https://threatfox.abuse.ch/browse/malware/elf.mirai/