The .7z File Extension Virus: A New Kind of Ransomware

Ransomware attacks have been a growing concern for individuals and organizations alike, with new strains emerging regularly. The latest addition to this threat landscape is Qlocker, a ransomware strain that uses an unusual tactic to infect devices and demand payment from victims. In this article, we'll delve into the characteristics of the .7z file extension virus and how it differs from other forms of ransomware.

How Does Qlocker Work?

Qlocker targets vulnerabilities in QNAP network-attached storage (NAS) infrastructure, exploiting security flaws to gain access to devices and remotely run the 7zip archive application. Once inside, the malware encrypts files using a strong cryptographic algorithm, adding the .7z extension to each affected file. A ransom note is then dropped, demanding payment of 0.01 BTC (approximately $500) for the decryption key.

The Unusual Tactics of Qlocker

What sets Qlocker apart from other ransomware strains is its use of an open-source archiver instead of creating a separate program. This approach allows the attackers to bypass some traditional security measures, making it more difficult for defenders to detect and prevent the attack.

Furthermore, Qlocker's relatively small ransom demand may actually work in favor of the attackers. Unlike most ransomware actors who aim for much larger payouts, Qlocker's modest demands may lead victims to be more willing to pay up. As of April 24, 2021, security researchers have tracked down payments totaling at least $260,000.

Red Flags and Detection

While there are no straightforward methods to detect Qlocker, there is one notable red flag: the presence of numerous instances of the 7z process in the Resource Monitor utility during an attack. This unusual activity may indicate that a device has been infected with Qlocker.

The .7z file extension virus, also known as Qlocker, represents a new and cunning approach to ransomware attacks. By exploiting vulnerabilities in QNAP NAS infrastructure and using an open-source archiver, Qlocker's attackers have successfully bypassed some traditional security measures. As the threat landscape continues to evolve, it's essential for individuals and organizations to stay vigilant and take proactive steps to protect themselves against this new strain of ransomware.

Free Scan:

To determine if your system is infected with Qlocker or other forms of malware, we recommend scanning your PC with Combo Cleaner for Windows. This powerful tool can detect and remove various types of malware, including ransomware. Don't wait until it's too late – run a free scan today to protect your digital assets.