DUCKTAIL – Affecting Facebook Business Ads.
Researchers have discovered an operation, named DUCKTAIL, targetting individuals and organizations that operate on Facebook’s Business and Ads.
The threat actors target individuals and employees that may have access to a Facebook Business account, they use an information-stealer malware that steals browser cookies and abuse authenticated Facebook sessions to steal information from the victim’s Facebook account.
The attackers connected the victims through LinkedIn, some of the samples observed by the experts have been hosted on file or cloud hosting services, such as Dropbox, iCloud, and MediaFire.
The samples used in the DUCKTAIL operation were written in .NET Core and were compiled using its single file feature. This feature bundles all dependent libraries into a single executable.
The use of .Net Core allows the attackers to embed Telegram. Bot client as well as any other external dependencies into a single executable and use Telegram channels as Command and Control (C&C).
In order to steal Facebook session cookies from the victims, the malware scans the machine for popular browsers, including Google Chrome, Microsoft Edge, Brave Browser, and Firefox.
The malware also steals information from the victim’s personal Facebook account, including name, email address, date of birth, and user ID, along with other data such as 2FA codes, user agents, IP address, and geolocation
The attackers can access to the victim’s personal account, hijack it by adding their email address retrieved from the Telegram channel and grant themselves Admin and Finance editor access.
DUCKTAIL samples analyzed by the experts includes US, India, Saudi Arabia, Italy, Germany, Sweden, Finland, and the Philippines.
Facebook Business administrators are recommended to check access permissions for their business accounts and remove any unknown users.
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