Could your business be vulnerable to this kind of attack?
That is not a scare tactic. It is a very real leadership question after security researchers uncovered a new PureRAT campaign that hides malicious code inside ordinary image files, then executes it without ever dropping a traditional malware file on disk.
In other words, attackers are finding new ways to walk straight past tools built to detect suspicious files.
And for business leaders, that should raise an uncomfortable question:
If malware can hide inside something as innocent as a PNG image, what else are your current defenses missing?
According to a recent report from Cybersecurity News, citing research from Trellix, a new PureRAT campaign is using image steganography and fileless execution to compromise Windows systems.
The original report from Cybersecurity News can be found here:
New PureRAT Campaign Hides PE Payloads in PNG Files and Executes Them Filelessly
Researchers found that attackers:
This is called a fileless attack.
And that matters because many traditional security products are still heavily focused on detecting malicious files.
PureRAT simply gives them less to find.
Because attackers no longer need obvious malware files.
Instead, they are increasingly using:
PureRAT uses several of these techniques at once.
It checks for virtual machines to avoid sandboxes.
It abuses trusted Windows processes.
It hides malicious code inside image files.
To a security platform that is built around "detect the bad file," this can look like normal activity.
That is exactly why so many organizations are discovering breaches after the damage is already underway.
It means the impact goes far beyond IT.
A successful endpoint compromise can trigger:
According to IBM's 2025 Cost of a Data Breach Report, the global average cost of a data breach is $4.44 million.
That number includes:
IBM also found that organizations still average 241 days to identify and contain a breach. That is months of potential exposure.
According to the 2025 Verizon Data Breach Investigations Report, 30% of breaches involved third-party relationships, roughly double the previous year.
Customers may forgive downtime.
They are far less forgiving when sensitive data is stolen.
A single endpoint compromise can trigger:
When endpoints are compromised:
That is the uncomfortable truth.
Yes.
EDR can be valuable.
But EDR is still largely based on detecting suspicious behavior after something starts executing.
By that point:
PureRAT demonstrates how attackers are actively designing malware to bypass detection layers.
They know how EDR works.
And they are building around it.
Because "Detect and Respond" assumes you can spot the attack fast enough.
Modern attackers know that is often not true.
They:
When ransomware can spread in minutes, delayed detection becomes a business problem, not just a security problem.
More organizations are moving toward prevention-first security.
Instead of asking:
"Can we detect it after it starts?"
They are asking:
"Can we stop it from executing in the first place?"
That is where Isolation and Containment becomes powerful.
A prevention-first model focuses on:
One example is AppGuard, a proven endpoint protection solution with a 10-year track record focused on prevention through Isolation and Containment.
Rather than waiting to detect malicious behavior, the goal is to prevent untrusted activity from ever gaining the freedom to execute.
Business leaders should assume detection will fail at some point.
That means now is the time to:
The question is no longer whether attackers can bypass detection.
The question is what happens when they do.
Business owners who want to better understand how prevention-first security can stop attacks before damage occurs should talk with CHIPS about how AppGuard can help prevent incidents like this through Isolation and Containment.
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