Threat actors continue to prey on the public’s fears of the COVID-19 pandemic by conducting malware activities disguised behind COVID-19 safety measure documents, according to BleepingComputer.
Researchers at Cybaze/Yoroi ZLAb previously reported receiving a CoronaVirusSafetyMeasures_pdf.exe executable that is likely spread as an email attachment in phishing campaigns. The executable turned out to be a Remcos RAT dropper with persistence capabilities and the ability to log the user’s keystrokes.
Other researchers also reported emails spreading around that are purported to be from the Ministry of Health of the People's Republic of China with emergency COVID-19 regulations in English but are actually the Lokibot information stealer malware. The MalwareHunterTeam collective also unveiled a COVID-19 themed document claiming to be from the Center for Public Health of the Ministry of Health of Ukraine with malicious macros that enable threat actors to perform clipboard stealing, screenshotting and keylogging on victims.
The World Health Organization recently warned of phishing attacks impersonating the organization that were designed to steal information.
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Such websites, which are operated under "AI Nude" and are advanced by black hat SEO techniques, promise the conversion of uploaded photos into deepfake nudes but display a link, which when clicked redirected to another site with the password and link to the password-protected Dropbox-hosted archive that contains the infostealer malware.
Such packages leveraged in the attacks had their legitimacy established by fraudulent statistics and included malicious code distributed across several dependencies to better evade detection.
Aside from execution stability enhancements brought upon by overhauled client- and server-side frameworks, as well as text extraction improvements, Rhadamanthys version 0.7.0 has also been beefed up with Microsoft Software Installer file execution and installation capabilities aimed at better concealing malicious activity.