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Home Alerts

Water Makara Uses JavaScript for Phishing

October 14, 2024
Reading Time: 2 mins read
in Alerts
Water Makara Uses JavaScript for Phishing

Recent research by Trend Micro has uncovered a rise in spear phishing attacks attributed to the threat actor group known as Water Makara, with a specific focus on organizations in Brazil. This group is employing a sophisticated tactic that utilizes the Astaroth banking malware, which is known for its ability to steal sensitive information. The attackers are leveraging obfuscated JavaScript embedded in malicious emails disguised as official tax documents, effectively bypassing traditional security measures. By creating a sense of urgency around personal income tax filings, these malicious emails entice recipients to download harmful ZIP files, unwittingly facilitating the malware’s deployment.

The spear phishing campaign primarily targets various industries, with manufacturing companies, retail firms, and government agencies being the most affected sectors. The malicious emails often contain attachments that appear legitimate, but these ZIP files harbor a malicious LNK file. When executed by the recipient, this LNK file runs embedded JavaScript commands designed to establish a connection with a command-and-control (C&C) server controlled by the attackers. This method of social engineering highlights the need for employees to be vigilant and discerning when interacting with unexpected or suspicious emails.

Upon analysis, the ZIP files used in the attacks often bear names associated with personal income tax documents, such as “IRPF20248328025.zip,” which translates to “Personal Income Tax.” This familiar nomenclature increases the likelihood of victims opening these files, leading to the execution of the harmful scripts. The embedded LNK files utilize the legitimate Windows utility mshta.exe to execute the obfuscated JavaScript commands, establishing a foothold for the Astaroth malware on the compromised systems.

In response to the evolving threat landscape, organizations must bolster their cybersecurity defenses. Implementing regular security training for employees, enforcing strong password policies, utilizing multifactor authentication (MFA), and keeping software up to date are critical steps in mitigating the risks associated with spear phishing attacks. As Water Makara continues to adapt its strategies, raising awareness about these tactics and fostering a culture of security within organizations will be vital in protecting against potential breaches.

Reference:
  • Water Makara Deploys Obfuscated JavaScript in Spear Phishing Campaigns
Tags: Astaroth malwareBrazilCyber AlertsCyber Alerts 2024Cyber threatsJavascriptOctober 2024PhishingSpear phishingthreat actorTrend MicroWater Makara
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