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Gcleaner

Also known as: G-Cleaner

Category: Malware

Type: Loader

Platform: Windows

Variants: -

Damage potential: Stolen passwords, data theft, identity theft, installation of additional malware, financial losses.

Overview

Gcleaner is one of the most widespread fake PC programs that disguises itself as a system cleaning or optimization tool. First spotted in early 2019, the malware is used to deliver various types of malicious payloads to systems, working as a loader for malicious files with the aim of stealing sensitive data once in your computer’s system. Depending on the victim's geographical location, Gcleaner can secretly download and extract malware such as AZORult, the Raccoon info stealer, Smoke Loader, and RedLine Stealer.

Possible symptoms

The most common Gcleaner malware symptoms include:

  • Unexpected pop-up ads.
  • Slow device performance.
  • Increased battery drain.
  • Increased data usage.
  • New unknown apps.
  • Frequent system crashes or freezes.
  • Unauthorized system changes.
  • Disabled antivirus and other security software.

Sources of infection

SMS phishing campaigns, malware websites, and malicious ads are the main sources of infection for this loader. In addition, Gcleaner can reach your computer through bundled apps or via peer-to-peer (P2P) sharing.

Protection

To protect yourself against threats like Gcleaner, you should be aware of common phishing techniques and be cautious while downloading apps.

  • Do not click on suspicious links in SMS messages and emails.
  • Only download reputable apps from official sources.
  • Use NordVPN’s Threat Protection to scan downloads for viruses and block malicious ads.
  • Enable Threat Protection’s vulnerability scanner to check your software for potential weaknesses.
  • Enable multi-factor authentication (MFA) where possible.
  • Install reliable antivirus software and keep it updated.
  • Update your operating system and all software regularly to benefit from the most recent security patches.

Removal

Manually removing Gcleaner from your device might be challenging, so it’s best to use a reliable antivirus software for this.

  • Disconnect the infected device from the internet.
  • Restart your device in safe mode.
  • Run a full system scan with your antivirus software.
  • Detect the malicious app and delete it.
  • Run another system scan to ensure no traces of malware are left.
  • Change all passwords and monitor your accounts for suspicious activity.