In the ever-evolving world of cyber threats, a new phishing campaign has emerged, targeting unsuspecting Facebook users. This campaign is particularly sinister, as it uses fake copyright infringement notices to lure victims. Here’s a deep dive into this alarming trend and how you can protect yourself.

The Anatomy of the Attack

Who’s in the Crosshairs?

While any Facebook user could potentially be a target, Guardio Labs’ research indicates that this

Understanding the mechanics behind the phishing campaign on Facebook provides valuable insights into the sophistication and tactics employed by the hackers. Let’s delve deeper into the technical aspects of this attack.

1. Initial Contact through Compromised Networks

The hackers initiate their campaign by leveraging a vast network of fake and compromised Facebook accounts. These accounts are often created using automated bots or are genuine accounts that have been hijacked. The latter provides a more authentic appearance, making the phishing attempt more convincing.

2. Crafting the Perfect Phishing Message

The phishing messages are meticulously crafted to appear legitimate. They often mimic the official communication style of Facebook, complete with logos, headers, and footers. The core of the message revolves around a fake copyright infringement notice, designed to instill a sense of urgency and panic in the recipient.

3. Malware Delivery Mechanism

The hackers employ a two-step process to deliver their malware:

  • Batch File Attachment: The unsuspecting user receives a RAR or ZIP attachment, which contains a batch file. This file acts as the first stage of the attack, serving as a downloader for the main malware payload.
  • Malware Dropper from GitHub: Once the batch file is executed, it reaches out to GitHub, a popular platform for hosting and sharing code. Here, it fetches the main malware dropper, which is responsible for deploying the password-stealing malware onto the victim’s system.

4. Stealth and Evasion Techniques

The malware is designed with stealth in mind. It uses multiple layers of obfuscation, making it challenging for traditional antivirus software to detect it. By hosting the malware dropper on GitHub, a trusted platform, the hackers also bypass many network security solutions that would typically block known malicious domains.

5. Data Exfiltration Process

Once the malware is installed, it begins its data harvesting operation. It scans the system for stored cookies and login credentials, especially focusing on browsers where users often save their passwords for convenience. All this data is then compiled into a ZIP file.

The malware then establishes a connection to a command and control (C2) server, often using encrypted channels to avoid detection. The ZIP file containing the stolen data is then uploaded to this server.

6. Final Blow: Wiping Cookies

Post data exfiltration, the malware performs a cleanup operation. It wipes all cookies from the victim’s computer, effectively logging them out of all their online accounts. This step is particularly malicious, as it not only disorients the victim but also gives the hackers a window of opportunity to change account passwords without immediate detection.

campaign has a particular interest in Facebook Business accounts. This focus on businesses underscores the broader risks associated with unsolicited messages on social media platforms. Business accounts often have more at stake, making them lucrative targets for cybercriminals.

The Deceptive Lure

What makes this campaign especially cunning is its use of copyright violation notices. These notices are designed to grab the attention of business owners, making them more likely to fall for the scam. In some instances, the hackers even provide information on specific products sold by a business, adding another layer of seeming authenticity to their deceitful approach.

The Malicious Payload

Once the initial message is sent, the hackers don’t stop there. They follow up by sending a batch file disguised as a RAR or ZIP attachment. If the recipient is tricked into downloading and launching this file, a malware dropper fetched from GitHub springs into action. This malware is designed to steal passwords by collecting all cookies and login data from the victim’s browser. Once gathered, this data is compiled and sent back to the hackers. To add insult to injury, the malware then wipes all cookies from the victim’s computer, effectively logging them out of their accounts. This action gives the hackers ample time to change passwords and seize control of the accounts.

The Alarming Scale

The scale of this phishing campaign is genuinely staggering. Guardio Labs’ research indicates that around 100,000 phishing messages are dispatched every week, targeting Facebook users across North America, Europe, Australia, Japan, and Southeast Asia. Even more concerning is that 7% of all Facebook Business accounts have been on the receiving end of these messages. Thankfully, only a small fraction (0.4%) have been duped into downloading the malicious file.

Staying Safe in the Digital Jungle

Protection is paramount. Users must exercise extreme caution when navigating messages on Facebook and other social media sites. Key red flags to watch out for include misspelled words, poor grammar, and messages that convey a sense of urgency. It’s worth noting that in this campaign, the hackers cleverly used fake copyright violations to instill a sense of urgency, hoping to catch Facebook Business users off guard.

In Conclusion

The digital landscape is fraught with threats, but with awareness and vigilance, you can navigate it safely. Always be skeptical of unsolicited messages, especially those that create a sense of urgency or ask for personal information. Stay informed, stay cautious, and stay safe.

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