ThreatFox: KongTuke IOCs

Hunt Hypothesis

This hunt targets adversary behavior characterized by the presence of four specific Indicators of Compromise (IOCs) linked to the KongTuke malware family, which often signifies an active infection or reconnaissance phase within the network. Proactively searching for these IOCs in Azure Sentinel is critical because early detection enables the SOC team to rapidly isolate affected assets and mitigate potential lateral movement before the threat escalates into a broader compromise.

IOC Summary

Malware Family: KongTuke Total IOCs: 4 IOC Types: url, domain

KQL: Domain Hunt

// Hunt for DNS queries to known malicious domains
// Source: ThreatFox - KongTuke
let malicious_domains = dynamic(["kumlman.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 - KongTuke
let malicious_urls = dynamic(["https://kumlman.lol/file.js", "https://kumlman.lol/api/v1/session", "https://kumlman.lol/api/v1/verify"]);
UrlClickEvents
| where Url has_any (malicious_urls)
| project Timestamp, AccountUpn, Url, ActionType, IsClickedThrough
| order by Timestamp desc

Required Data Sources

References

• ThreatFox — KongTuke

False Positive Guidance

Here are specific false positive scenarios for the ThreatFox: KongTuke IOCs detection rule, tailored for an enterprise environment:

• Software Deployment via SCCM/Intune: The IT Operations team deploys a new version of the “KongTuke” security agent or a related utility to 50+ workstations using Microsoft Endpoint Configuration Manager (SCCM) or Intune. The deployment package includes the specific executable hash and network beaconing behavior defined in the IOCs, causing alerts on every endpoint during the installation window.

  • Suggested Filter: Create an exclusion for processes originating from the C:\Program Files\Microsoft SCCM or C:\Windows\CCM directories, specifically targeting the known deployment package GUIDs used by the IT team.

• Scheduled Vulnerability Scanning Job: A nightly scheduled task runs a third-party vulnerability scanner (e.g., Tenable Nessus or Qualys) which utilizes a KongTuke-based scanning engine to probe internal assets. The scanner’s service account executes the IOCs’ binary and initiates outbound connections to the vendor’s update servers, triggering the detection logic on the server hosting the scan agent.

  • Suggested Filter: Exclude alerts where the process path matches C:\Program Files\Tenable\Nessus or C:\Qualys\Agent, and restrict the rule trigger to exclude known service accounts (e.g., svc_nessus_scan) running during standard maintenance windows (02:00–04:00 local time).

• Administrative Patch Management Cycle: During a monthly patch cycle, administrators manually run a KongTuke-specific update utility (KongTuke_Updater.exe) on domain controllers to apply security definitions. This administrative action involves the execution of the IOCs’ binaries and subsequent DNS queries to the vendor’s repository, mimicking the initial infection behavior. *