Monday, July 15, 2024
EHA

Dangerous macOS Backdoor That Steals User Login Credentials Remained Undetected for Years

A macOS backdoor dubbed Calisto remained undetected from the radar of antivirus solutions for years. The malware initially uploaded into virustotal back in 2016 and remains undetected until May 2018.

Security researchers from Kaspersky spotted the macOS malware sample with suspiciously familiar features that include remote login, screen sharing, remote login and hidden root account.

Calisto Distribution & Installation

Calisto installation file is an unsigned DMG image that poses as a Leading Mac security and antivirus software Intego’s security solution for Mac.

Threat actors made the macOS malware appearing more convincing and only the user who already installed the app can spot the difference.

Calisto

As like any other application it starts the installation with the license agreement and in the next step it asks for the username and password. Once the user inputs the credentials it shows installation failed and asks users a new installation package from the official site.

Calisto’s activity on a computer with SIP-enabled is limited and it failed to modify system files. In the infected machine, it creates a hidden folder.Callisto to store Keychain data, login credentials, network connection details and Google Chrome data.

With SIP disabled machine it performs many other operations that include

Copying itself to /System/Library/ folder
Sets itself to launch automatically on startup
Unmounts and uninstalls its DMG image
Adds itself to Accessibility
Harvests additional information about the system
Enables remote access to the system
Forwards the harvested data to a C&C server

According to researchers, the Calisto backdoor appears to be similar like Backdoor.OSX.Proton which steals user personal data and contents of Keychain.

To defends against Calisto and their analogues, never disable SIP, Updates OS to current version, Run application only from the trusted source and use a reputed Antivirus.

Also Read

MACOS Malware Targeting Cryptocurrency Users On Slack and Discord – 100% Undetected Virustotal

macOS Signature Validation Flaw Allows a Malicious Code Appeared to be Signed by Apple

New MacOS Backdoor Distributed through Malicious Word Documents

Website

Latest articles

Critical Cellopoint Secure Email Gateway Flaw Let Attackers Execute Arbitrary Code

A critical vulnerability has been discovered in the Cellopoint Secure Email Gateway, identified as...

Singapore Banks to Phase out OTPs for Bank Account Logins Within 3 Months

The Monetary Authority of Singapore (MAS) and The Association of Banks in Singapore (ABS)...

GuardZoo Android Malware Attacking military personnel via WhatsApp To Steal Sensitive Data

A Houthi-aligned group has been deploying Android surveillanceware called GuardZoo since October 2019 to...

ViperSoftX Weaponizing AutoIt & CLR For Stealthy PowerShell Execution

ViperSoftX is an advanced malware that has become more complicated since its recognition in...

Malicious NuGet Campaign Tricking Developers To Inject Malicious Code

Hackers often target NuGet as it's a popular package manager for .NET, which developers...

Akira Ransomware Attacking Airline Industry With Legitimate Tools

Airlines often become the target of hackers as they contain sensitive personal and financial...

DarkGate Malware Exploiting Excel Files And SMB File Shares

DarkGate, a Malware-as-a-Service (MaaS) platform, experienced a surge in activity since September 2023, employing...
Guru baran
Guru baranhttps://gbhackers.com
Gurubaran is a co-founder of Cyber Security News and GBHackers On Security. He has 10+ years of experience as a Security Consultant, Editor, and Analyst in cybersecurity, technology, and communications.

Free Webinar

Low Rate DDoS Attack

9 of 10 sites on the AppTrana network have faced a DDoS attack in the last 30 days.
Some DDoS attacks could readily be blocked by rate-limiting, IP reputation checks and other basic mitigation methods.
More than 50% of the DDoS attacks are employing botnets to send slow DDoS attacks where millions of IPs are being employed to send one or two requests per minute..
Key takeaways include:

  • The mechanics of a low-DDoS attack
  • Fundamentals of behavioural AI and rate-limiting
  • Surgical mitigation actions to minimize false positives
  • Role of managed services in DDoS monitoring

Related Articles