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Hackers sent Joe Biden’s presidential campaign staffers malicious emails that impersonated anti-virus software company McAfee, and used a mix of legitimate services (such as Dropbox) to avoid detection. The emails were an attempt to steal staffers’ credentials and infect them with malware. The unsuccessful advanced persistent threat group (APT) attacks on Biden’s campaign were first uncovered in June, along with cyberattacks targeting Donald Trump’s campaign. However, the details of the attacks themselves, and the tactics used, were scant until Google Threat Analysis Group’s (TAG) Friday analysis. “In one example, attackers impersonated McAfee,” said researchers on Friday. “The targets would be prompted to install a legitimate version of McAfee anti-virus software from GitHub, while malware was simultaneously silently installed to the system.” The campaign was based on email based links that would ultimately download malware hosted on GitHub, researchers said. The malware was specifically a python-based implant using Dropbox for command and control (C2), which once downloaded would allow the attacker to upload and download files and execute arbitrary commands. Every malicious piece of this attack was hosted on legitimate services – making it harder for defenders to rely on network signals for detection, researchers noted. The McAfee lure used in the Biden cyberattack. Credit: Google Google attributed the attack on Biden’s campaign staff to APT 31 (also known as…

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