Financially motivated criminal hackers leverage a new infostealer dubbed Ducktail to exfiltrate browser cookies and take over victims’ Facebook Business accounts. The evidence suggests that the adversaries behind the campaign are Vietnam-based, primarily targeting professionals working in HR, management, and marketing. The beginning of the active development of the Ducktail campaign can be traced back to the second half of 2021.
Adversaries propagate the malware via a spear phishing campaign targeting their victims on Linkedin.
The detection has translations for 24 SIEM, EDR & XDR platforms. The rule is aligned with the MITRE ATT&CK® framework v.10, addressing the Defense Evasion, Execution, and Command and Control tactics with Process Injection (T1055), User Execution (T1204), and Web Service (T1102) as the primary techniques.
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The malware campaign dubbed Ducktail was detailed by analysts from WithSecure. Based on the observed attacks, Ducktail operators target corporate users with admin access to Facebook’s Business and Ads platform, luring them into downloading bogus Facebook advertising information hosted on Dropbox, Apple iCloud, and MediaFire. There are instances of the threat actors behind the Ducktail campaign spreading malware via Linkedin by sending out weaponized archive files. The attacks are wide-ranging, targeting victims across different industry verticals globally.
Ducktail infostealer malware is written in .NET Core. Adversaries use Telegram for command-and-control communication and data exfiltration. When the victim executes the malware, it scans for browsers installed on the compromised device to exfiltrate stored cookies and all relevant Facebook-related data. The malware also runs an infinite loop in the background which establishes a continuous exfiltration process.
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