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Interface of ANY.RUN’s Interactive Sandbox when detecting a phishing attack
What if one fake login page could give an outsider access to your company’s most sensitive data? That’s exactly what happens in a Microsoft 365 phishing attack, and they’re hitting businesses every day.
It starts with a routine-looking email. One click, and the user lands on a login page that looks exactly like Microsoft 365. After entering the credentials, an attacker is inside your company. Emails, files, calendars; everything tied to that account is now exposed.
These phishing attacks don’t trigger alerts, and by the time you realize what happened, the damage is already done.
So how can companies spot the trap before someone steps into it?
See the Attack Before It Happens
The worst part of a Microsoft 365 phishing attack is realizing it slipped through a week ago, and someone’s been inside ever since.
To avoid that kind of silent breach, many companies are shifting their approach. Instead of waiting for alerts or user reports, they’re starting to analyze suspicious links and attachments the moment they arrive.
One of the safest and most effective ways to do this is with an interactive sandbox, such as ANY.RUN.
A sandbox gives your security team a safe space to test potentially malicious content. You can open emails, click links, and interact with files just like a user would, without putting your network at risk.
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Equip your team with instant threat visibility, automated insights, and real-time phishing detection, all in one user-friendly sandbox. |
And when it comes to Microsoft 365 phishing attacks, the benefits are clear:
- Exposes fake Microsoft 365 login pages that mimic the real thing
- Follows redirect chains to uncover hidden phishing sites
- Reveals credential theft and data exfiltration attempts
- Detects hidden malware or secondary payloads
- Generates detailed IOCs to improve detection and response
With this kind of visibility, your team can catch threats early, shut them down fast, and stop phishing attacks from becoming full-scale incidents.
Let’s walk through a real example.
Real Case: A Fake Microsoft 365 Phishing Page Detected in Seconds
Here’s a real-world example of a phishing page disguised as a Microsoft 365 login, submitted to the ANY.RUN sandbox.
Open sample safely inside sandbox
Within seconds of submission, the sandbox identified the sample as malicious. That immediate verdict is important for cybersecurity. Fast detection means security teams can immediately block the threat, notify affected users, and update internal systems to prevent the same attack from spreading.
Open the sample safely in the sandbox, and you’ll see the results right away in the upper-right corner of the screen: Malicious activity, labeled clearly, with threat tags like storm1747 and tycoon.
Inside the session, the fake login page looks almost identical to Microsoft 365. But take a closer look at the URL; it’s a mess of random characters, a clear red flag. A user might overlook it, but in the sandbox, it’s easy to inspect and document.
Once the victim enters their credentials, the background changes along with the logo to mimic the user’s company’s corporate branding. This is another sign that the data has been harvested and is being funneled elsewhere.
This kind of live, step-by-step interaction is exactly what makes sandboxing so useful for businesses. It doesn’t just catch the threat; it shows you how it works. That insight can feed directly into security policies, employee training, and automated defences.
To the right of the screen, you’ll find the Process Tree – a visual map of everything that happened during the analysis. Click into the node labelled “phishing,” and you’ll see every process, action, and network request tied to the attack.
The Process Tree is especially valuable for security teams. It helps analysts trace the full execution path of a threat in seconds, which is critical for faster triage, incident response, and reporting.
There’s also a text-based report that breaks down the analysis in a structured, readable format; perfect for documentation, internal reviews, or sharing with other teams.
And it doesn’t stop there.
One of the best things about sandboxes like ANY.RUN is their accessibility. The interface is designed to be user-friendly, even for non-specialists. That means your broader team, not just threat analysts, can quickly test suspicious files or links on their own.
Plus, there’s an AI Assistant built into the platform that can explain what’s happening in plain language. It’s especially helpful for junior analysts, IT support teams, or anyone who needs fast answers without digging through logs.
This is how it looks inside the analysis session we are currently analyzing:
What You Can Do Right Now
Phishing campaigns are getting sharper, faster, and harder to spot. But with the right tools and habits in place, you can stay one step ahead. Here’s what your team can start doing today:
- Analyze suspicious links and attachments inside a sandbox before letting them reach employees
- Build a threat database to enrich your detection systems
- Train your team by showing them actual phishing pages from recent campaigns
- Use the sandbox interactively to test email behavior in real time, not just after an incident
Putting these practices in place helps your business catch threats early, cut response times, and prevent costly breaches. It gives your team the visibility to move fast and the confidence to act before an attack spreads.
Try it for yourself. Join ANY.RUN now for a 14-day trial and explore the full power of real-time sandbox analysis.