Wednesday , June 4 2025
windows

Microsoft fixes two Windows zero-days exploited in attacks

Microsoft fixed two zero-day vulnerabilities in April 2024 Patch Tuesday, but they didn’t label them as such at first. CVE-2024-26234 is a vulnerability that involves a malicious driver being signed with a valid Microsoft Hardware Publisher Certificate. It was discovered by Sophos X-Ops in December 2023 and reported by team lead Christopher Budd.

This malicious file was labeled as “Catalog Authentication Client Service” by “Catalog Thales,” likely an attempt to impersonate Thales Group. However, further investigation revealed that it was previously bundled with a marketing software called LaiXi Android Screen Mirroring.’

CVSS 9.6: IBM QRadar & Cloud Pak Security Flaws Exposed

IBM has issued a security advisory for vulnerabilities in its QRadar Suite Software and Cloud Pak for Security platforms. These...
Read More
CVSS 9.6: IBM QRadar & Cloud Pak Security Flaws Exposed

ALERT
Thousands of IP addresses compromised nationwide: CIRT warn

As Bangladesh prepares for the extended Eid-ul-Adha holidays, the BGD e-GOV Computer Incident Response Team (CIRT) has issued an urgent...
Read More
ALERT  Thousands of IP addresses compromised nationwide: CIRT warn

New Android Malware ‘Crocodilus’ Targets Banks in 8 Countries

In March 2025, the Threatfabric mobile Threat Intelligence team identified Crocodilus, a new Android banking Trojan designed for device takeover....
Read More
New Android Malware ‘Crocodilus’ Targets Banks in 8 Countries

Qualcomm Patches 3 Zero-Days Used in Targeted Android Attacks

Qualcomm has issued security patches for three zero-day vulnerabilities in the Adreno GPU driver, affecting many chipsets that are being...
Read More
Qualcomm Patches 3 Zero-Days Used in Targeted Android Attacks

Critical RCE Flaw Patched in Roundcube Webmail

Roundcube Webmail has fixed a critical security flaw that could enable remote code execution after authentication. Disclosed by security researcher...
Read More
Critical RCE Flaw Patched in Roundcube Webmail

Hacker claim Leak of Deloitte Source Code & GitHub Credentials

A hacker known as "303" claim to breach the company's systems and leaked sensitive internal data on a dark web...
Read More
Hacker claim Leak of Deloitte Source Code & GitHub Credentials

CISA Issued Guidance for SIEM and SOAR Implementation

CISA and ACSC issued new guidance this week on how to procure, implement, and maintain SIEM and SOAR platforms. SIEM...
Read More
CISA Issued Guidance for SIEM and SOAR Implementation

Linux flaws enable password hash theft via core dumps in Ubuntu, RHEL, Fedora

The Qualys Threat Research Unit (TRU) found two local information-disclosure vulnerabilities in Apport and systemd-coredump. Both issues are race-condition vulnerabilities....
Read More
Linux flaws enable password hash theft via core dumps in Ubuntu, RHEL, Fedora

Australia enacts mandatory ransomware payment reporting

New ransomware payment reporting rules take effect in Australia yesterday (May 30) for all organisations with an annual turnover of...
Read More
Australia enacts mandatory ransomware payment reporting

Why Govt Demands Foreign CCTV Firms to Submit Source Code?

Global makers of surveillance gear have clashed with Indian regulators in recent weeks over contentious new security rules that require...
Read More
Why Govt Demands Foreign CCTV Firms to Submit Source Code?

While Sophos couldn’t verify the authenticity of LaiXi software, Budd says they’re confident the file is a malicious backdoor.

“Just as we did in 2022, we immediately reported our findings to the Microsoft Security Response Center. After validating our discovery, the team at Microsoft has added the relevant files to its revocation list (updated today as part of the usual Patch Tuesday cycle; see CVE-2024-26234),” Budd said.

Sophos’ findings support information from a January report by cybersecurity company Stairwell and a tweet by reverse engineering expert Johann Aydinba.

Redmond has updated the advisory for CVE-2024-26234, confirming that it has been exploited and publicly disclosed.

In July 2023 and December 2022, Sophos discovered more harmful drivers that had been signed using valid WHCP certificates. However, instead of assigning CVE-IDs like they do now, Microsoft released security advisories for those incidents.

MotW bypass exploited in malware attacks:

Microsoft silently patched another zero-day vulnerability today. This vulnerability, tracked as CVE-2024-29988, is related to a security feature bypass in SmartScreen prompt. The vulnerability is caused by a weakness in the protection mechanism.

CVE-2024-29988 is a bypass for the CVE-2024-21412 flaw and was reported by Peter Girnus of Trend Micro’s Zero Day Initiative, as well as by Dmitrij Lenz and Vlad Stolyarov from Google’s Threat Analysis Group.

Dustin Childs, ZDI’s Head of Threat Awareness, identified it as a tool used in attacks to install malware on specific Windows systems. The tool is able to avoid detection by EDR/NDR and bypass the Mark of the Web (MotW) feature.

“This vulnerability is related to CVE-2024-21412, which was discovered by ZDI threat researchers in the wild and first addressed in February,” Childs told BleepingComputer.

“The first patch did not completely resolve the vulnerability. This update addresses the second part of the exploit chain. Microsoft did not indicate they were patching this vulnerability, so it was a (welcome) surprise when the patch went live.”

The Water Hydra group also used a different vulnerability to target forex and stock trading communities on New Year’s Eve.

CVE-2024-21412 was a bypass for another Defender SmartScreen vulnerability called CVE-2023-36025. This vulnerability was fixed in November 2023 but was used as a zero-day to distribute Phemedrone malware.

Microsoft released security updates for 150 vulnerabilities in April 2024. Out of these, 67 were remote code execution bugs.

Source: Microsoft, Bleepingcomputer

Check Also

mobile

Bank server compromised using customer’s mobile, steal ₹11 crore

Cyber fraudsters hacked the Himachal Pradesh State Cooperative Bank’s server using a customer’s mobile phone. …

Leave a Reply

Your email address will not be published. Required fields are marked *