Trustwave SpiderLabs Uncovers Ov3r_Stealer Malware Spread via Phishing and Facebook Advertising. Learn More

Trustwave SpiderLabs Uncovers Ov3r_Stealer Malware Spread via Phishing and Facebook Advertising. Learn More

Managed Detection & Response

Eliminate active threats with 24/7 threat detection, investigation, and response.

Co-Managed SOC (SIEM)

Maximize your SIEM investment, stop alert fatigue, and enhance your team with hybrid security operations support.

Advisory & Diagnostics

Advance your cybersecurity program and get expert guidance where you need it most.

Penetration Testing

Test your physical locations and IT infrastructure to shore up weaknesses before exploitation.

Database Security

Prevent unauthorized access and exceed compliance requirements.

Email Security

Stop email threats others miss and secure your organization against the #1 ransomware attack vector.

Digital Forensics & Incident Response

Prepare for the inevitable with 24/7 global breach response in-region and available on-site.

Firewall & Technology Management

Mitigate risk of a cyberattack with 24/7 incident and health monitoring and the latest threat intelligence.

Microsoft Exchange Server Attacks
Stay protected against emerging threats
Rapidly Secure New Environments
Security for rapid response situations
Securing the Cloud
Safely navigate and stay protected
Securing the IoT Landscape
Test, monitor and secure network objects
Why Trustwave
About Us
Awards and Accolades
Trustwave SpiderLabs Team
Trustwave Fusion Security Operations Platform
Trustwave Security Colony
Technology Alliance Partners
Key alliances who align and support our ecosystem of security offerings
Trustwave PartnerOne Program
Join forces with Trustwave to protect against the most advance cybersecurity threats
SpiderLabs Blog

Trustwave SpiderLabs Uncovers Ov3r_Stealer Malware Spread via Phishing and Facebook Advertising

During an Advanced Continual Threat Hunt (ACTH) investigation that took place in early December 2023, Trustwave SpiderLabs discovered Ov3r_Stealer, an infostealer distributed using Facebook advertising and phishing emails. SpiderLabs’ “Facebook Advertising Spreads Novel Malware Variant,” is an in-depth dive into Ov3r_Stealer, exposing what the Threat Hunt team learned about the threat actors, their techniques, tactics, and procedures and how the malware functions.

The threat actors designed Ov3r_Stealer to swipe credentials and crypto wallets and send that information to a Telegram channel the threat actor monitors. The tactics and techniques used to drop the malware and the code is not unique, but because this malware was relatively unknown at the time of discovery, it allowed our investigators to dig a little deeper into its backstory and potentially the origins of this malware.

We found the initial attack vector for this malware was through a Facebook job advertisement for an Account Manager position. Weaponized links brought the user to a malicious discord content delivery URL, which in turn began the execution phase of the attack. The attackers also use other methods of distribution.

In one victim’s environment we observed a Powershell script masquerading as a Windows Control Panel binary that was executed the malware was downloaded. Once the malware was loaded on the system and executed, a persistence was established with the malware running every 90 minutes.

The malware is designed to exfiltrate specific types of data such as: GeoLocation (based on IP), hardware info, passwords, cookies, credit card information, auto-fills, browser extensions, crypto wallets, Office documents, and antivirus product information. Once the information was gathered, it was then exfiltrated to a Telegram channel the threat actor was monitoring.

What the threat actors can do next is not fully understood, but the stolen information could potentially be sold to the highest bidder, or the malware, like many others before it, becomes modularized and is later used as a dropper for other malware or post exploit tools up to and including ransomware.

However, what is just mentioned is the tip of the iceberg in the team’s analysis. Please follow this link to learn the technical elements behind the malware and insights into the threat actors, communication channels, and repositories.

Latest SpiderLabs Blogs

Breakdown of Tycoon Phishing-as-a-Service System

Just weeks after Trustwave SpiderLabs reported on the Greatness phishing-as-a-service (PaaS) framework, SpiderLabs’ Global Threat Operations team uncovered another PaaS that it has dubbed Tycoon...

Read More

Physical Address Strangeness in Spam

Ten years ago, Congress passed the "CAN-SPAM Act" (also known as theYou-CAN-SPAM Act, since it defined legal spam and supersedes any stricter state-antispam laws). One of the provisions of the act is...

Read More

Trustwave SpiderLabs Guide: Jailbreaking Apple iOS 17 and Above

PLEASE NOTE: Jailbreaking any phone has the potential to permanently damage your device. Even if successful, you will be voiding your warranty and will no longer receive any official security or...

Read More