Gozi Malware: Analysis, Detection, Removal

What is Gozi Malware?

Gozi malware is a widely known banking Trojan, first discovered in 2007, that targets financial institutions by stealing sensitive data such as login credentials and personal banking information. Its key functions include keylogging, form grabbing, and injecting malicious code into web sessions. Gozi is considered a high-risk threat due to its ability to adapt and evade detection.

When was Gozi first discovered?

Gozi was initially discovered in early 2007 by security researchers analyzing a leaked sample. It gained notoriety for its effectiveness and has since evolved into various sophisticated versions.

Who created Gozi?

The identities of the individuals or groups behind Gozi remain uncertain. However, reports indicate that the malware originated from cybercriminal entities with advanced coding knowledge.

What does Gozi target?

Gozi primarily targets Windows-based systems and focuses on financial institutions and online banking platforms. Its geographical impact has been widespread, with campaigns identified across North America, Europe, and other regions.

Gozi distribution method

Gozi malware typically spreads through phishing emails with malicious attachments, drive-by downloads on compromised websites, and exploit kits that take advantage of unpatched software vulnerabilities.

Technical analysis of Gozi Malware

Tactics, Techniques & Procedures (TTPs)

Gozi uses stealthy persistence mechanisms, such as modifying registry keys and injecting malicious payloads into trusted processes. It leverages techniques like Dynamic Web Injection to steal credentials without victim awareness while transferring data to command-and-control (C2) servers.

Indicators of Compromise (IoCs)

Suspicious domain connections and IPs
File hashes linked to Gozi samples
Unfamiliar processes in task manager or altered system files

How to know if you’re infected with Gozi?

Signs of infection include unexplained system slowdowns, unusual network activity, missing funds from financial accounts, or alerts from endpoint protection tools.

Gozi removal instructions

Removing Gozi requires comprehensive action. Begin by disconnecting the infected computer from the network to prevent further damage. Use trusted EDR solutions or remediation tools to identify and remove malicious files. A complete system reinstallation may be necessary if the infection is severe.

Is Gozi still active?

Yes, Gozi remains active, with cybercriminal groups releasing updated variants to bypass modern security defenses. Vigilance is required to guard against this persistent threat.

Mitigation & Prevention Strategies

Preventing Gozi infections involves implementing robust cybersecurity practices such as regular software patching, enabling multi-factor authentication, and conducting regular phishing awareness training. Continuous monitoring via managed detection and response services like th Huntress Managed Cybersecurity Platform can help proactively mitigate Gozi attacks.

Gozi FAQs

Gozi is a banking Trojan designed to steal confidential financial information through methods such as keylogging and web session injection. It works by infiltrating systems via phishing or exploit kits and relaying stolen data to cybercriminal-controlled servers.

Gozi spreads through malicious email attachments, fraudulent links, and drive-by downloads on compromised websites. Once executed, it persists by embedding itself in legitimate processes and evading detection tools.

[[Q]Is Gozi still a threat in 2025?

Yes, Gozi remains a relevant threat as updated versions continue to emerge. Cybercriminals refine its capabilities to bypass evolving defenses, making constant vigilance necessary.