Security Companies Zscaler and Seculert independently detected assaults that recently utilized "MSUpdater Trojan" a RAT (Remote Access Tool) featured malicious program through fake e-mails, apparently inviting recipients for attending some conference, while the messages themselves aimed at government-associated organizations.
Specifically, the phishing electronic mails, which carried the Trojan, contained one PDF attachment supposedly announcing an invitation for being at a conference, which potentially held some meaning for the recipient.
Further, by abusing zero-day security flaws within Adobe Reader, the PDF attachment released the MSUpdater Trojan that in the guise of a 'Microsoft Windows Update' remained invisible to security software.
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