ThreatFox: Amadey IOCs

Hunt Hypothesis

The ThreatFox: Amadey IOCs rule detects potential adversary activity associated with the Amadey malware, which is known for its persistence and lateral movement capabilities. SOC teams should proactively hunt for this behavior in Azure Sentinel to identify and mitigate advanced threats before they cause significant damage to the environment.

IOC Summary

Malware Family: Amadey Total IOCs: 3 IOC Types: url

KQL: Url Hunt

// Hunt for access to known malicious URLs
// Source: ThreatFox - Amadey
let malicious_urls = dynamic(["http://bugmenot.site/bPwsAq2/ndex.php", "http://arbitrarycode.site/bPwsAq2/ndex.php", "http://adminstatus.site/bPwsAq2/ndex.php"]);
UrlClickEvents
| where Url has_any (malicious_urls)
| project Timestamp, AccountUpn, Url, ActionType, IsClickedThrough
| order by Timestamp desc

Required Data Sources

References

• ThreatFox — Amadey

False Positive Guidance

• Scenario: Legitimate scheduled job for system monitoring using Splunk
  Filter/Exclusion: Exclude events where the process name is splunkd and the command line includes --schedule or --cron.

• Scenario: Administrative task using PowerShell to generate reports
  Filter/Exclusion: Exclude events where the process name is powershell.exe and the command line includes Get-EventLog or Export-Csv.

• Scenario: Routine use of Logstash for data ingestion
  Filter/Exclusion: Exclude events where the process name is logstash and the command line includes --config or --input.

• Scenario: System update using Windows Update
  Filter/Exclusion: Exclude events where the process name is wuauclt.exe and the command line includes detectnow or updatenow.

• Scenario: Database backup using MySQL scheduled task
  Filter/Exclusion: Exclude events where the process name is mysqldump and the command line includes --single-transaction or --quick.