Latest cybersecurity reporting from selected sources.

Microsoft Threat Intelligence identified threat actor activity with overlapping tradecraft commonly associated with ShinyHunters, including voice phishing (vishing), supply-chain compromise, and misconfigured guest access targeting SaaS-based applications. The post Defending SaaS-based applications against ShinyHunters OAuth abuse appeared first on Microsoft Security Blog.

Attackers are abusing Microsoft 365 mailbox rules to hide activity, exfiltrate data and retain access after account compromise, researchers warn

Organizations typically roll out multi-factor authentication (MFA) and assume stolen passwords are no longer enough to access systems. In Windows environments, that assumption is often wrong. Attackers still compromise networks every day using valid credentials. The issue is not MFA itself, but coverage.  Enforced through an identity provider (IdP) such as Microsoft Entra ID, Okta, or

Threat actors are targeting technology, manufacturing, and financial organizations in campaigns that combine device code phishing and voice phishing (vishing) to abuse the OAuth 2.0 Device Authorization flow and compromise Microsoft Entra accounts. [...]

A financially motivated threat actor codenamed UNC5142 has been observed abusing blockchain smart contracts as a way to facilitate the distribution of information stealers such as Atomic (AMOS), Lumma, Rhadamanthys (aka RADTHIEF), and Vidar, targeting both Windows and Apple macOS systems

The threat actor known as Silver Fox has been attributed to abuse of a previously unknown vulnerable driver associated with WatchDog Anti-malware as part of a Bring Your Own Vulnerable Driver (BYOVD) attack aimed at disarming security solutions installed on compromised hosts

A sophisticated malicious campaign that researchers call OneClik has been leveraging Microsoft's ClickOnce software deployment tool and custom Golang backdoors to compromise organizations within the energy, oil, and gas sectors. [...]

Microsoft is warning of cyber attack campaigns that abuse legitimate file hosting services such as SharePoint, OneDrive, and Dropbox that are widely used in enterprise environments as a defense evasion tactic

Business email compromise, illicit cryptomining, phishing ... if it makes a dollar, this lot do it Multiple miscreants are misusing OAuth to automate financially motivated cyber crimes – such as business email compromise (BEC), phishing, large-scale spamming campaigns – and deploying virtual machines to illicitly mine for cryptocurrencies, according to Microsoft.…

Akamai says it reported the flaws to Microsoft. Redmond shrugged A series of attacks against Microsoft Active Directory domains could allow miscreants to spoof DNS records, compromise Active Directory and steal all the secrets it stores, according to Akamai security researchers.…

The abuse methods require pre-existing access to a compromised user account or Teams token

Hackers are abusing the Windows Problem Reporting (WerFault.exe) error reporting tool for Windows to load malware into a compromised system's memory using a DLL sideloading technique. [...]

We look into some of the implementations that cybercriminals use to bypass the Windows Antimalware Scan Interface (AMSI) and how security teams can detect threats attempting to abuse it for compromise with Trend Micro Vision One™.