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New Facebook malware targets business accounts

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Helsinki-based cybersecurity vendor WithSecure (formerly F-Secure Business) says it has discovered an operation, dubbed “DUCKTAIL,” that uses social media-based spear phishing attacks to gain access to Facebook Business accounts.

The company said that it has “high confidence” that a Vietnamese threat actor is behind the attacks, which aim malicious messages at LinkedIn users who are likely to have admin access to their companies’ Facebook accounts. The threat actor also targets email addresses of potential victims directly.

What makes the attack unique, according to WithSecure, is the infostealer malware component, which is designed specifically to gain access to Facebook Business accounts. Previous attacks targeting Facebook did not target Facebook Business accounts in particular.  If a victim can be induced to open a malicious link, the malware scans the infected computer for browsers and extracts cookies that indicate authenticated Facebook sessions for use in gaining access to those accounts. Command and control is handled via the Telegram messaging service, using the Telegram Bot system, and private data is also sent back to the hacker in this way.

Hacked accounts can provide the bad actor with a wealth of information, including 2FA codes, IP addresses and geolocation, financial details and credit card numbers, and much more. It can also compromise Facebook advertising accounts.

Mohammad Kazem Hassan Nejad, a researcher for WithSecure, said that the malicious actor behind the DUCKTAIL attacks has been careful in selecting the malware’s targets.

“We believe that the DUCKTAIL operators carefully select a small number of targets to increase their chances of success and remain unnoticed,” he said in a statement announcing the company’s findings. “We have observed individuals with managerial, digital marketing, digital media, and human resources roles in companies to have been targeted.”

Copyright © 2022 IDG Communications, Inc.

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