DarkGate malware is being spread through phishing emails with malicious Excel attachments, targeting unsuspecting users.

A new phishing campaign has emerged, spreading DarkGate malware using clever techniques to slip past security filters. Researchers at Cisco Talos have uncovered this campaign, highlighting the evolving strategies of cybercriminals.

How is DarkGate Malware Spread?

The malware is delivered through Excel documents attached to phishing emails, which often appear to come from a company’s CEO. These emails usually urge recipients to review the attached documents urgently, often related to financial or official matters.

When the recipient opens the malicious Excel file, it uses a technique called “Remote Template Injection” to download and execute harmful content from a remote server. This tactic exploits a legitimate Excel feature, making it harder for security systems to detect.

What is Remote Template Injection?

Remote Template Injection is a tactic where attackers exploit Excel’s functionality to import templates from external sources. This method allows malware to be downloaded and executed on the victim’s device without triggering typical security alerts.

Why This Matters

Cybercriminals are getting smarter, constantly changing their methods to bypass security measures. By using trusted document formats like Excel, they exploit the inherent trust users have in these files. This makes it crucial for organisations, especially in finance and those that depend on spreadsheets, to be extra vigilant.

How can I identify a phishing email?

Phishing emails often create a sense of urgency, asking you to click on a link or open an attachment. Look for signs like unfamiliar senders, generic greetings, and requests for personal information. Always verify the source before taking any action. Need a professional? See our Managed Services.