FrigidStealer Malware

Mac users are often under the illusion that their systems are impervious to malware threats. However, cybercriminals have continued to develop sophisticated malware specifically targeting macOS. One such recent and dangerous threat is FrigidStealer—a malicious stealer-type malware that infiltrates Mac systems, exfiltrates sensitive data, and can lead to identity theft and financial losses. This article provides an in-depth analysis of FrigidStealer, a breakdown of its symptoms, distribution methods, detection names, and most importantly, how to remove it effectively with SpyHunter.

FrigidStealer Threat Summary

Below is a table summarizing the key characteristics of FrigidStealer:

Attribute	Details
Threat Name	FrigidStealer
Threat Type	Mac malware, stealer, password-stealing virus
Detection Names	Combo Cleaner (Trojan.GenericKD.75636707, Trojan.GenericKD.75636461), Emsisoft (Trojan.GenericKD.75636707 (B), Trojan.GenericKD.75636461 (B)), Ikarus (OSX.Agent), Kaspersky (UDS:Trojan-PSW.OSX.Amos.ag)
Symptoms of Infection	No visible symptoms, but user data (passwords, cookies, notes) is silently exfiltrated
Damage	Stolen passwords, banking information, identity theft, financial losses, severe privacy issues
Distribution Methods	Fake updates, deceptive pop-up ads, free software installers (bundling)
Danger Level	High

How FrigidStealer Infects Mac Systems

FrigidStealer primarily spreads through fraudulent update campaigns. These campaigns lure users into downloading fake Safari or Chrome browser updates. Upon downloading the DMG installer file, users are instructed to bypass Mac’s Gatekeeper security feature by right-clicking and selecting “Open.”

Once executed, the malware proceeds with the installation, prompting users to enter their Mac passwords under the pretense of granting system permissions. This action allows FrigidStealer to capture credentials and exfiltrate files with sensitive information, such as login details and cryptocurrency-related data.

Key Functionalities of FrigidStealer

• Credential Theft: Captures user passwords via deceptive permission requests.
• File Extraction: Searches for login credentials and crypto-related data stored in Desktop and Documents folders.
• Cookie Hijacking: Extracts browser cookies, potentially leading to unauthorized access to user accounts.
• Notes Data Theft: Targets the native Notes app to steal stored text-based information.

How to Remove FrigidStealer Malware?

FrigidStealer is a stealthy and dangerous Mac malware. To ensure a complete removal of this threat, follow the detailed step-by-step removal guide below using SpyHunter.

Step 1: Use SpyHunter to Scan and Remove FrigidStealer

1. Download SpyHunter for Mac.
2. Install the software and launch it.
3. Run a full system scan to detect FrigidStealer and other potential threats.
4. Once the scan completes, review the detected threats.
5. Click “Fix Threats” to remove FrigidStealer from your Mac.

Step 2: Manually Remove FrigidStealer (Advanced Users)

Delete Suspicious Applications

1. Open Finder → Applications.
2. Look for any suspicious applications (especially recently installed ones that you do not recognize).
3. Drag the application to the Trash and empty it.

Remove FrigidStealer-Related Files from Library Folders

1. Open Finder and select Go → Go to Folder.
2. Enter the following paths one by one and delete suspicious files:
   • ~/Library/LaunchAgents/
   • ~/Library/Application Support/
   • ~/Library/LaunchDaemons/
3. Remove any files associated with unknown or recently installed programs.

Reset Browsers to Remove Malicious Extensions

For Safari

1. Open Safari and go to Preferences → Extensions.
2. Remove any suspicious extensions.
3. Navigate to Privacy → Manage Website Data → Remove All.
4. Restart Safari.

For Google Chrome

1. Open Chrome and go to Settings → Extensions.
2. Delete unknown or suspicious extensions.
3. Go to Privacy and Security → Clear Browsing Data → Clear Data.
4. Restart Chrome.

Preventive Measures Against FrigidStealer

To avoid future infections, follow these best practices:

Never Download Updates from Unofficial Sources

Always update browsers and other software directly from the official website or the Mac App Store.

Enable Gatekeeper and XProtect

1. Go to System Preferences → Security & Privacy.
2. Ensure App Store and identified developers is selected.

Use Strong and Unique Passwords

• Use a reliable password manager.
• Enable two-factor authentication (2FA) whenever possible.

Regularly Scan Your System with Anti-Malware Software

SpyHunter provides real-time protection and automatic scans to detect and remove threats like FrigidStealer before they cause damage.

Be Wary of Pop-Ups and Suspicious Websites

• Never click on pop-up ads claiming your Mac is “infected.”
• Avoid downloading software from unknown third-party sources.

Conclusion

FrigidStealer is a dangerous stealer malware designed to target Mac users by disguising itself as a legitimate browser update. Once installed, it silently exfiltrates sensitive data, including login credentials, cookies, and notes, which can lead to identity theft and financial loss. The best way to protect against FrigidStealer is through a combination of careful browsing habits, robust cybersecurity measures, and anti-malware tools like SpyHunter.

If you suspect that your Mac is infected with FrigidStealer, act immediately by following our removal guide. Stay vigilant and always keep your system protected against evolving cyber threats.