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Laptops with Windows Hello Fingerprint Authentication Vulnerable

 


Microsoft’s Windows Hello security, which offers a passwordless method of logging into Windows-powered machines may not be as secure as users think. Microsoft Windows Hello fingerprint authentication was evaluated for security over its fingerprint sensors embedded in laptops. This led to the discovery of multiple vulnerabilities that would allow a threat actor to bypass Windows Hello Authentication completely. 

As reported by Blackwing Intelligence in a blog post, Microsoft's Offensive Research and Security Engineering (MORSE) had asked them to conduct an assessment of the security of the three top fingerprint sensors embedded in laptops, in response to a recent request. 

There was research conducted on three laptops, the Dell Inspiron 15, the Lenovo ThinkPad T14, and the Microsoft Surface Pro Type Cover with Fingerprint ID, which were used in the study. It was discovered that several vulnerabilities in the Windows Hello fingerprint authentication system could be exploited by researchers working on the project.

In addition, The document also reveals that the fingerprint sensors used in Lenovo ThinkPad T14, Dell Inspiron 15, Surface Pro 8 and X tablets made by Goodix, Synaptics, and ELAN were vulnerable to man-in-the-middle attacks due to their underlying technology. 

A premier sensor enabling fingerprint authentication through Windows Hello is not as secure as manufacturers would like. It has been discovered that there are several security flaws in many fingerprint sensors used in many laptops that are compatible with the Windows Hello authentication feature due to the use of outdated firmware. 

It was discovered by researchers at Blackwing Intelligence, a company that conducts research into the security, offensive capabilities, and vulnerability of hardware and software products. The researchers found weaknesses in fingerprint sensors embedded in the devices from Goodix, Synaptics, and ELAN, all of which are manufactured by these manufacturers. 

Using fingerprint reader exploits requires users to already have fingerprint authentication set up on their targeted laptops so that the exploits can work. Three fingerprint sensors in the system are all part of a type of sensor that is known as "match on chip" (MoC), which includes all biometric management functions in the integrated circuit of the sensor itself.

Concept Of Vulnerability Match On Chip As reported by Cyber Security News, this vulnerability is due to a flaw within the concept of the "match on chip" type sensors. Microsoft removed the option of storing some fingerprint templates on the host machine and replaced it with a "match on chip" sensor.  This means that the fingerprint templates are now stored on the chip, thus potentially reducing the concern that fingerprints might be exfiltrated from the host if the host becomes compromised, which could compromise the privacy of your data. 

Despite this, this method has a downside as it does not prevent malicious sensors from spoofing the communication between the sensor and the host, so in this case, an authorized and authenticated user who is using the sensor can easily be fooled. 

There have been several successful attempts at defeating Windows Hello biometric-based authentication systems in the past, but this isn't the first time. This month, Microsoft released two patches (CVE-2021-34466, CVSS score: 6.1), aimed at patching up a security flaw that was rated medium severity in July 2021, and that could allow an adversary to hijack the login process by spoofing the target's face. 

The validity of Microsoft's statement as to whether they will be able to find a fix for the flaws is still unclear; however, this is not the first time Windows Hello, a biometric-based system, has been the victim of attacks. A proof of concept in 2021 showed that by using an infrared photo of a victim with the facial recognition feature of Windows Hello, it was possible to bypass the authentication method. Following this, Microsoft fixed the issue to prevent the problem from occurring again.

Gh0stCringe Malware Recently Attacked Insecure Microsoft SQL and MySQL Servers

 

Hackers are deploying the Gh0stCringe remote support trojans on vulnerable computers by inadequately targeting secured Microsoft SQL and MySQL database servers. 

Gh0stCringe, also known as CirenegRAT, is a Gh0st RAT malware variant that was most recently used in Chinese cyber-espionage activities in 2020, however, it has been around since 2018. The malware has several instructions and functionalities which can be activated after the malware connects to its command and control server, or through data stored in the virus's settings. 

Attackers can use Gh0stCringe to download payloads like crypto miners from C2 servers, access specified websites via the Internet Explorer web browser, and even wipe the start-up disk's Master Boot Record (MBR). The malware includes a keylogger, which records input data in the Default. key file in the Windows System directory if it is activated. 

Threat actors are infiltrating database servers and writing the malicious'mcsql.exe' executable to disc utilizing the mysqld.exe, mysqld-nt.exe, and sqlserver.exe processes. These assaults are comparable to the Microsoft SQL server attempts, which used the Microsoft SQL xp cmdshell command to drop Cobalt Strike beacons. In addition to Gh0stCringe, AhnLab's study notes the presence of numerous malware samples on the investigated servers, implying potentially competing threat actors are infiltrating the same servers to drop payloads with its own operations.

Gh0stCringe RAT is a strong virus that can connect to a C2 server to receive custom commands or exfiltrate stolen data to the enemies. For an endless loop, the keylogging component uses the Windows Polling method (GetAsyncKeyState API) to ask the state of each key. This otherwise dependable recording mechanism carries the risk of very high CPU utilization, however, this is unlikely to cause issues for threat actors on poorly maintained servers. The malware will also record keystrokes for the previous three minutes and send them to the infection's command and control servers along with basic system and network information. 

Threat actors will be able to steal login passwords and other sensitive information that logged-in users entered on the device using these logged keystrokes. CirenegRAT has four operational modes: 0, 1, 2, and a specific Windows 10 mode which the threat actor can choose from during deployment.

Update your server software to install the most recent security upgrades, which can help you avoid a variety of attacks to make use of known flaws. It's also critical to use a secure admin password that can't be brute-forced. The most important step is to put the database server behind a firewall to only allow authorized devices to connect to it.

Google reCAPTCHA used by Phishing Attackers

 


Thousands of phishing emails threaten Microsoft users to obtain their Office 365 credentials during an active attack. The attackers add to the campaign an air of authenticity by the use of a bogus Google reCAPTCHA scheme and top domain landing pages which include symbols of victims' organizations. Though more than 2,500 phishing emails connected with the campaign have been blocked by the organization. Security company Zscaler's Threat Analysis Unit, ThreatLabZ, has noticed that since December 2020 phishing is increasing, with mostly senior staff working in the banking industry being targeted. 

Google reCAPTCHA is a service that effectively prevents spam and misuse on websites by using a Turing test to separate human beings and bots (by asking the user to click on a fire hydrant out of a series of images, for instance). The campaign starts with an attacker sending phishing emails to targets, which tend to come from some kind of single contact system to simplify corporate communication. There is a malicious email attachment in the email. The victims are diverted to a .xyz phishing website, which is masked by the official Google reCAPTCHA page, to trick visitors when they open the embedded HTML file. This shows that an attacker has done his research which allows him to configure his landing pages to fit his victim's profile, also making the attack more credible. Phishing emails claim to be programmed emails from the unified communication resources of victimizations which say they have a voice message link. 

Following, checking the reCAPTCHA, the victims will be sent to a false Microsoft login page. When victims submit their username and password, they are encouraged to add credibility to the campaign by falsifying a message " validation successful." The researchers added that “Users are then shown a recording of a voicemail message that they can play, allowing threat actors to avoid suspicion.” 

"These attacks can be categorized as BEC [business email compromise] although the sender, in this case, involves the use of popular unified communication systems used by the organizations," Gayathri Anbalagan, the lead researcher on the Zscaler study points out. "We are not able to attribute this campaign to a specific threat actor but looking at the operational theme and the target profiles, it is likely to be a single coordinated campaign." 

“Similar phishing campaigns utilizing fake Google reCAPTCHA have been observed for several years, but this specific campaign targeting executives across specific industry verticals started in December 2020,” noted researchers. Phishing attackers have also acquired multiple approaches to make the scams look more credible, such as Google Translate or customized font.