How SOC Teams Can Investigate Phishing with Sandboxing and Threat Intelligence

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Summary

A sponsored article describes an ANY.RUN analysis of a fake-invitation phishing campaign targeting U.S. organizations and outlines using sandboxing and threat intelligence to find related activity and inform SOC response.

Key points

  • The article says the campaign targeted U.S. organizations, including education, banking, government, technology, and healthcare.
  • The phishing flow reportedly used a fake invitation, CAPTCHA, and event-themed page, with potential credential and OTP capture or delivery of legitimate RMM tools.
  • The article describes sandbox analysis revealing redirects, fake pages, credential prompts, downloads, and possible remote-access activity.
  • Reported recurring page patterns included requests to /favicon.ico and /blocked.html, and resources under /Image/*.png.
  • The proposed workflow uses threat intelligence to connect related pages and infrastructure, then shares behavior-based indicators with tools such as SIEM, SOAR, NDR, and firewalls.
  • Performance figures, including faster triage and reduced response times, are presented as reports from ANY.RUN users.

Article Details

Defense Focus
Detect and validate phishing behavior early, enrich findings with campaign context, and use that intelligence to find and contain related exposure across the organization.
Detection Methods
  • Analyze suspicious emails, attachments, and URLs in an interactive sandbox; follow redirects and phishing flows to observe behavior beyond the original message.
  • Correlate repeated phishing-page patterns, requests, domains, and URL paths to identify related campaign activity.
  • Use behavior-based indicators and campaign context to hunt for related domains, URL paths, suspicious requests, downloaded files, and possible RMM activity across the security environment.
Data Sources
  • Suspicious emails, attachments, and URLs
  • Sandbox-observed redirects, phishing pages, credential prompts, and downloads
  • Repeated requests for /favicon.ico, /blocked.html, and resources under /Image/*.png
  • Email, network, endpoint, identity, and cloud security data
  • Indicators and campaign context from threat intelligence
Platforms
  • SIEM
  • TIP
  • SOAR
  • NDR
  • Firewalls
Defensive Actions
  • Safely validate suspicious links and attachments in an interactive sandbox before determining exposure.
  • Enrich findings with threat intelligence and check whether related domains, pages, or infrastructure indicate wider campaign activity.
  • Push relevant behavior-based indicators into existing security tools for detection, blocking, enrichment, and response.
  • Hunt across users, departments, and security data sources for related activity, including suspicious requests, downloads, or possible RMM activity.
  • Escalate or contain affected accounts and endpoints when investigation findings support action.

MITRE ATT&CK

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