Malvertising on Microsoft Edge's News Feed pushes tech support scams
We uncovered a campaign on the Microsoft Edge home page where malicious ads are luring victims into tech support scams.
Undermining Microsoft Teams Security by Mining Tokens
In August 2022, the Vectra Protect team identified an attack path that enables malicious actors with file system access to steal credentials for any Microsoft Teams user who is signed in.
Microsoft investigates Iranian attacks against the Albanian government
Shortly after the destructive cyberattacks on the Albanian government in mid-July, the Microsoft Detection and Response Team (DART) was engaged to lead an investigation into the attacks.
Peut-on encore, en Suisse, recourir à des services cloud offerts par Microsoft ?
Dans une prise de position publiée le 13 juin 2022, le Préposé fédéral à la protection des données et à la transparence a estimé que le recours aux services cloud M365 de Microsoft serait susceptible de violer la Loi fédérale sur la protection des données, quand bien même le projet de la Caisse nationale suisse d'assurance en cas d'accidents (SUVA) envisage que les données soient hébergées en Suisse et que le cocontractant du responsable du traitement soit une entité européenne du Groupe Microsoft.
Looking for the ‘Sliver’ lining: Hunting for emerging command-and-control frameworks - Microsoft Security Blog
Threat actors evade detection by adopting the Sliver command-and-control (C2) framework in intrusion campaigns.
MagicWeb: NOBELIUM’s post-compromise trick to authenticate as anyone
Microsoft security researchers have discovered a post-compromise capability we’re calling MagicWeb, which is used by a threat actor we track as NOBELIUM to maintain persistent access to compromised environments.
Disrupting SEABORGIUM’s ongoing phishing operations
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.
Large-Scale AiTM Attack targeting enterprise users of Microsoft email services
A ThreatLabz technical analysis of the latest variant of proxy-based AiTM attacks that are phishing enterprise users for their Microsoft credentials.
911 Proxy Service Implodes After Disclosing Breach
911[.]re, a proxy service that since 2015 has sold access to hundreds of thousands of Microsoft Windows computers daily, announced this week that it is shutting down in the wake of a data breach that destroyed key components of its…
Untangling KNOTWEED: European private-sector offensive actor using 0-day exploits
MSTIC and MSRC disclose technical details of a private-sector offensive actor (PSOA) tracked as KNOTWEED using multiple Windows and Adobe 0-day exploits, including one for the recently patched CVE-2022-22047, in limited and targeted attacks against European and Central American customers.
North Korean threat actor targets small and midsize businesses with H0lyGh0st ransomware
A group of actors originating from North Korea that MSTIC tracks as DEV-0530 has been developing and using ransomware in attacks since June 2021. This group, which calls itself H0lyGh0st, utilizes a ransomware payload with the same name.
From cookie theft to BEC: Attackers use AiTM phishing sites as entry point to further financial fraud
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).
Ongoing phishing campaign can hack you even when you’re protected with MFA
Campaign that steals email has targeted at least 10,000 organizations since September.
Uncovering a macOS App Sandbox escape vulnerability: A deep dive into CVE-2022-26706 - Microsoft Security Blog
Microsoft uncovered a vulnerability in macOS that could allow specially crafted codes to escape the App Sandbox and run unrestricted on the system. We shared these findings with Apple, and fix for this vulnerability, now identified as CVE-2022-26706, was included in the security updates on May 16, 2022.
Cybersecurity experts question Microsoft's Ukraine report
Leading cybersecurity experts and foreign policy scholars raise serious questions and concerns about Microsoft's report on the Ukraine war.
Microsoft finds Raspberry Robin worm in hundreds of Windows networks
Microsoft says that a recently spotted Windows worm has been found on the networks of hundreds of organizations from various industry sectors.
The SessionManager IIS backdoor: a possibly overlooked GELSEMIUM artefact
In early 2022, we investigated an IIS backdoor called SessionManager. It has been used against NGOs, government, military and industrial organizations in Africa, South America, Asia, Europe, Russia and the Middle East.
NSA, Partners Recommend Properly Configuring, Monitoring PowerShell in New Report
The National Security Agency (NSA) and partner cybersecurity authorities released a Cybersecurity Information Sheet today recommending that Microsoft Windows® operators and administrators properly
7-zip now supports Windows ‘Mark-of-the-Web’ security feature
7-zip has finally added support for the long-requested 'Mark-of-the-Web' Windows security feature, providing better protection from malicious downloaded files.
Defending Ukraine: Early Lessons from the Cyber War
This report represents research conducted by Microsoft’s threat intelligence and data science teams with the goal of sharpening our understanding of the threat landscape in the ongoing war in Ukraine. The report also offers a series of lessons and conclusions resulting from the data gathered and analyzed. Notably, the report reveals new information about Russian efforts including an increase in network penetration and espionage activities amongst allied governments, non-profits and other organizations outside Ukraine. This report also unveils detail about sophisticated and widespread Russian foreign influence operations being used among other things, to undermine Western unity and bolster their war efforts. We are seeing these foreign influence operations enacted in force in a coordinated fashion along with the full range of cyber destructive and espionage campaigns. Finally, the report calls for a coordinated and comprehensive strategy to strengthen collective defenses – a task that will require the private sector, public sector, nonprofits and civil society to come together. The foreword of this new report, written by Microsoft President and Vice Chair Brad Smith, offers additional detail below.
FBI says fraud on LinkedIn a 'significant threat' to platform and consumers
Fraudsters who target LinkedIn users in sophisticated investment schemes pose a "significant threat" to the platform, the FBI tells CNBC.
Guidance for CVE-2022-30190 Microsoft Support Diagnostic Tool Vulnerability
On Monday May 30, 2022, Microsoft issued CVE-2022-30190 regarding the Microsoft Support Diagnostic Tool (MSDT) in Windows vulnerability.
Ransomware-as-a-service: Understanding the cybercrime gig economy and how to protect yourself
Microsoft coined the term “human-operated ransomware” to clearly define a class of attack driven by expert humane intelligence at every step of the attack chain and culminate in intentional business disruption and extortion. In this blog, we explain the ransomware-as-a-service affiliate model and disambiguate between the attacker tools and the various threat actors at play during a security incident.
Apple, Google and Microsoft Commit to Expanded Support for FIDO Standard to Accelerate Availability of Passwordless Sign-Ins
Faster, easier and more secure sign-ins will be available to consumers across leading devices and platforms Mountain View, California, MAY 5, 2022 – In a joint effort to make the web […]
Microsoft finds new elevation of privilege Linux vulnerability, Nimbuspwn
Microsoft has discovered several vulnerabilities, collectively referred to as Nimbuspwn, that could be chained together, allowing an attacker to elevate privileges to root on many Linux desktop endpoints. Leveraging Nimbuspwn as a vector for root access could allow attackers to achieve greater impact on vulnerable devices by deploying payloads and performing other malicious actions via arbitrary root code execution.
DEV-0537 criminal actor targeting organizations for data exfiltration and destruction
The activity we have observed has been attributed to a threat group that Microsoft tracks as DEV-0537, also known as LAPSUS$. DEV-0537 is known for using a pure extortion and destruction model without deploying ransomware payloads.
Lapsus$ hackers leak 37GB of Microsoft's alleged source code
The Lapsus$ hacking group claims to have leaked the source code for Bing, Cortana, and other projects stolen from Microsoft's internal Azure DevOps server.
New Malware Capable of Controlling Social Media Accounts Infects 5,000+ Machines and is actively being Distributed via Gaming Applications on Microsoft's Official Store
New Malware Capable of Controlling Social Media Accounts Infects 5,000+ Machines and is actively being Distributed via Gaming Applications on Microsoft’s Official Store
ZINC weaponizing open-source software - Microsoft Security Blog
In recent months, Microsoft has detected a wide range of social engineering campaigns using weaponized legitimate open-source software by an actor we track as ZINC. Microsoft Threat Intelligence Center (MSTIC) observed activity targeting employees in organizations across multiple industries including media, defense and aerospace, and IT services in the US, UK, India, and Russia. Based on the observed tradecraft, infrastructure, tooling, and account affiliations, MSTIC attributes this campaign with high confidence to ZINC, a state-sponsored group based out of North Korea with objectives focused on espionage, data theft, financial gain, and network destruction.
Microsoft-signed malicious Windows drivers used in ransomware attacks
Microsoft has revoked several Chardware developer accounts after drivers signed through their profiles were used in cyberattacks, including ransomware incidents.