Do you know how a spear-phishing attack actually achieves the end result of acquiring loads of personal data? What is a malware downloader used in a spear-phishing attract? Let’s find a few answers.
The target organization, institution, or individual is sent emails in bulk which contain a malicious program in the form of an attachment or download link. A malware downloader or Trojan downloader downloads and installs malware into the target computer from email attachments or download links.
What typically happens in this form of cyberattack can be explained with the help of an example.
A spear-phishing campaign was launched some time ago targeting a U.S. government agency. To lure them in, the subject line indicated the email to contain information about the geopolitical problems in North Korea and the email was written in Russian.
This spear-phishing campaign called “Fractured Statue” had the emails containing six different types of malicious document attachments and the emails were sent in three waves.
Carrotball was a potential malware downloader that was harbored in these emails. When these malicious attachments were downloaded, they infected the systems with malware which consisted of the malicious documents concealing Carrotbat downloaders with Syscon payloads. Both Carrotball and Carrotbat served as the backdoors for the download and installation of Syscon remote access trojan (RAT). The backdoor thus provides complete access to a system and ultimately facilitates stealing of confidential data.
A malware downloader is a inconspicous piece of software that can easily go undetected and inflict great damage, thus we need to keep our security up to date. Thus, beware of what you are downloading and installing to avoid getting in the trap of cybercriminals.
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