Watch Out for Ransomware Pretending to Be a Windows Update!


Picture yourself diligently working on your computer when a Windows update notification appears. Instead of dismissing it, you take proactive steps, prioritising the security of your device. However, the seemingly legitimate update you install turns out to be a conduit for ransomware, turning your cautious approach into a cybersecurity nightmare.

This scenario highlights the evolving threat landscape in cybersecurity.

Cybercriminals are perpetually innovating methods to breach systems. They employ encryption techniques on crucial data, leaving victims grappling with difficult decisions. Once ransomware infiltrates your system, your PC becomes virtually unusable, forcing you to either pay a ransom or seek professional assistance to remove the malware, all while hoping you have a backup to restore.

A recent addition to this threat landscape is the “Big Head” ransomware variant, which intensifies the deception by masquerading as a Windows update. This article delves into the intricacies of Big Head ransomware, shedding light on its deceptive strategies. It also provides insights into how individuals can safeguard themselves against falling prey to such malicious attacks.

The Big Head Ransomware Deception


Ransomware attacks have gained notoriety for their capacity to encrypt files, rendering them inaccessible until a ransom is remitted to the perpetrator. The Big Head ransomware, however, takes this threat to a heightened level by adopting a sophisticated tactic: posing as a Windows update.

In this scheme, Big Head ransomware deceives victims with a meticulously crafted and bogus Windows update alert. The attackers design this false alert with precision, intending to mislead users into believing that their computer is undergoing a legitimate Windows update. This deceptive message may manifest as a pop-up window or a notification.

The level of deception is elevated further as the ransomware employs a counterfeit Microsoft digital signature, enhancing the appearance of authenticity for the fake update. This additional layer of credibility complicates the task of users in discerning the true nature of the malicious message.

The unsuspecting victim, under the impression of a genuine Windows update, unwittingly downloads and executes the ransomware onto their system. Subsequently, the ransomware initiates the encryption process on the victim’s files, accompanied by a ransom demand for payment in exchange for the decryption key.

It is anticipated that by 2031, ransomware attacks will occur at a staggering frequency, with an expected incident rate of one every two seconds.

Protect Yourself from Big Head Ransomware & Similar Threats


The landscape of cyber threats is evolving, with increasing sophistication. It’s not only ethical users who are leveraging ChatGPT; malicious actors are also harnessing its capabilities. Taking preemptive measures to safeguard your data and systems is imperative. Here are several strategies to fortify your defences against ransomware attacks such as Big Head.

Keep Software and Systems Updated


Navigating this situation is challenging. While updating your computer is a fundamental security best practice, the Big Head ransomware exploits the guise of Windows updates.

To ensure the authenticity of your updates, consider automating the process. Utilise the automated Windows update feature either on your device or through an IT provider, such as ourselves. This proactive approach enhances your ability to detect unexpected, potentially fraudulent updates.

Verify the Authenticity of Update


Prior to installing any software updates, authenticate their legitimacy. Genuine Windows updates are sourced directly from Microsoft’s official website or distributed through trusted channels such as your IT service provider or Windows Update settings. Exercise caution when encountering unsolicited update notifications, particularly those arriving via email or from unfamiliar sources.

Backup Your Data


Consistently create backups of your crucial files using either an external storage device or a reliable cloud backup service. In the unfortunate event of a ransomware attack, having these backup copies becomes indispensable. They provide the means to restore your files without succumbing to ransom payment demands.

Use Robust Security Software


Deploy trustworthy antivirus and anti-malware software on your computer. These applications play a crucial role in identifying and obstructing ransomware threats, effectively thwarting their attempts to infiltrate your system.

Educate Yourself and Others


Stay updated on the most recent ransomware threats and tactics. Educate both yourself and your colleagues or family members about the potential risks associated with clicking on dubious links and downloading attachments from unfamiliar sources.

Use Email Security Measures


Phishing emails are a common vector for ransomware propagation. Establish strong email security protocols. Exercise caution when opening email attachments or clicking on links, especially in messages from unfamiliar senders.

Enable Firewall and Network Security


Enable the firewall on your computer. Employ network security solutions to deter unauthorised access to your network and devices.

Disable Auto-Run Features

Set up your computer to deactivate auto-run functionality for external drives. This precautionary step can mitigate the risk of ransomware spreading via infected USB drives.

Be Wary of Pop-Up Alerts


Exercise prudence when confronted with pop-up alerts, particularly those urging you to download or install software. Prioritise verifying the legitimacy of these alerts before undertaking any actions.

Keep an Eye on Your System


Monitor your computer’s performance and be vigilant for any unusual activity. If you observe anything suspicious, conduct an immediate investigation. Suspicious activity on your PC may include:

  • Unexpected system slowdowns
  • File changes
  • Missing files or folders
  • Your PC’s processor “whirring” when you’re not doing anything

Have a Response Plan


In the unfortunate circumstance of a ransomware attack, ensure you have a response plan ready. Familiarise yourself with the process of disconnecting from the network, report the incident promptly to your IT department or a cybersecurity professional, and refrain from paying the ransom whenever feasible.

Need a Cybersecurity Audit?


Don’t allow unidentified threats to persist in your system. A cybersecurity audit can unveil potential vulnerabilities in your system, serving as a crucial proactive step for ensuring network security.

Contact us today to arrange a discussion.


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