Microsoft has been tracking activity related to the financially motivated threat actor Octo Tempest, whose evolving campaigns represent a growing concern for many organizations across multiple industries.
Microsoft Defender Experts observed a multi-stage adversary-in-the-middle (AiTM) and business email compromise (BEC) attack targeting banking and financial services organizations over two days. This attack originated from a compromised trusted vendor, involved AiTM and BEC attacks across multiple supplier/partner organizations for financial fraud, and did not use a reverse proxy like typical AiTM attacks.
DEV-1101 is an actor tracked by Microsoft responsible for the development, support, and advertising of several AiTM phishing kits, including an open-source kit capable of circumventing MFA through reverse-proxy functionality.
As organizations increase their coverage of multifactor authentication (MFA), threat actors have begun to move to more sophisticated techniques to allow them to compromise corporate resources without needing to satisfy MFA. Recently, the Microsoft Detection and Response Team (DART) has seen an increase in attackers utilizing token theft for this purpose.
Microsoft discovered a memory corruption vulnerability in a ChromeOS component that could have been triggered remotely, allowing attackers to perform either a denial-of-service (DoS) or, in extreme cases, remote code execution (RCE).
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The Microsoft Threat Intelligence Center (MSTIC) has observed and taken actions to disrupt campaigns launched by SEABORGIUM in campaigns involve persistent phishing and credential theft campaigns leading to intrusions and data theft.
A large-scale phishing campaign that attempted to target over 10,000 organizations since September 2021 used adversary-in-the-middle (AiTM) phishing sites to steal passwords, hijack a user’s sign-in session, and skip the authentication process, even if the user had enabled multifactor authentication (MFA).
Microsoft uncovered high-severity vulnerabilities in a mobile framework used by multiple large mobile service providers in pre-installed Android System apps that potentially exposed users to remote or local attacks.
