It may be unsophisticated but the Agent Tesla RAT is “street-wise,” adapting and evolving just enough to wreak havoc on organizations’ security efforts.
Recent improvements to the malware include more robust spreading and injection methods, as well as discovery and theft of wireless network details and credentials, according to an analysis by SentinelOne. Expanding its palette, Agent Tesla now can harvest configuration data and credentials from common VPN clients, FTP and email clients, and web browsers, exhibiting an ability to extract credentials from the registry as well as related configuration or support files.
“When combined with timely social engineering lures, these non-sophisticated attacks continue to be successful,” Jim Walter, SentinelOne’s senior threat researcher, wrote in an blog post that provided screenshots and specific code for injection drops. “Detection and prevention are key to reducing exposure to these threats.”
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