Vulnerabilities and exploits

We detected attacks with the use of an elevation of privilege exploit on multiple Microsoft Windows servers. Variants of the malware payload used along with the zero-day exploit were detected in widespread espionage campaigns. We are calling this cluster of activity MysterySnail.

Last week, Microsoft reported the RCE vulnerability CVE-2021-40444 in the MSHTML browser engine. Kaspersky is aware of targeted attacks using this vulnerability, and our products protect against attacks leveraging it.

Ferocious Kitten, TunnelSnake, PuzzleMaker and other threat actors, zero-day vulnerabilities, ransomware and banking Trojans – check out our review of Q2 2021.

PC threat statistics for Q2 2021 contain data on miners, encrypting ransomware, financial malware and threats to Windows, macOS and IoT.

Last week Microsoft warned Windows users about vulnerabilities in the Windows Print Spooler service – CVE-2021-1675 and CVE-2021-34527 (also known as PrintNightmare). We are closely monitoring the situation and improving generic detection of these vulnerabilities.

Сybersecurity companies implement a variety of methods to discover previously unknown malware files. Machine learning (ML) is a powerful and widely used approach for this task. But can we rely entirely on machine learning approaches in the battle with the bad guys? Or could powerful AI itself be vulnerable?

We detected a wave of highly targeted attacks against multiple companies. Closer analysis revealed that all these attacks exploited a chain of Google Chrome and Microsoft Windows zero-day exploits.

SolarWinds attacks, MS Exchange vulnerabilities, fake adblocker distributing miner, malware for Apple Silicon platform and other threats in Q1 2021.

In Q1 2021, we blocked more than 2 billion attacks launched from online resources across the globe, detected 77.4M unique malicious and potentially unwanted objects, and recognized 614M unique URLs as malicious.

In the EU, 70% of user computers experienced at least one Malware-class attack, 115,452,157 web attacks and 86,584,675 phishing attempts were blocked.

CVE-2021-28310 is an out-of-bounds (OOB) write vulnerability in dwmcore.dll, which is part of Desktop Window Manager (dwm.exe). We believe it is exploited in the wild, potentially by several threat actors.

The four vulnerabilities inside Microsoft Exchange Server allow an attacker to gain access to all registered email accounts, or to execute arbitrary code (RCE) within the Exchange Server context.

The Digital Footprint Intelligence Service announces the results of research on the digital footprints of governmental, financial and industrial organizations for countries in the Middle East region.

Kaspersky solutions blocked 666,809,967 attacks launched from online resources in various countries across the world, 173,335,902 unique URLs were recognized as malicious by Web Anti-Virus.

More than six years have passed since the banking Trojan Emotet was first detected. During this time it has repeatedly mutated, changed direction, acquired partners, picked up modules, and generally been the cause of high-profile incidents and multimillion-dollar losses.