HTML smugglers turn to SVG images
* HTML smuggling is a technique attackers use to hide an encoded malicious script within an HTML email attachment or webpage. * Once a victim receives the email and opens the attachment, their browser decodes and runs the script, which then assembles a malicious payload directl
Breaking the silence - Recent Truebot activity
Since August 2022, we have seen an increase in infections of Truebot (aka Silence.Downloader) malware. Truebot was first identified in 2017 and researchers have linked it to a threat actor called Silence Group that is responsible for several high-impact attacks on financial insti
Get a Loda This: LodaRAT meets new friends
* LodaRAT samples were deployed alongside other malware families, including RedLine and Neshta. * Cisco Talos identified several variants and altered versions of LodaRAT with updated functionality have been seen in the wild. * Changes in these LodaRAT variants include new f
Threat Advisory: High Severity OpenSSL Vulnerabilities
In late October two new buffer overflow vulnerabilities, CVE-2022-3602 and CVE-2022-3786, were announced in OpenSSL versions 3.0.0 to 3.0.6. These vulnerabilities can be exploited by sending an X.509 certificate with a specially crafted email address, potentially causing a buffer
Threat Advisory: Microsoft warns of actively exploited vulnerabilities in Exchange Server
Even organizations that use Exchange Online may still be affected if they run a hybrid server.
Avos ransomware group expands with new attack arsenal
By Flavio Costa, * In a recent customer engagement, we observed a month-long AvosLocker campaign. * The attackers utilized several different tools, including Cobalt Strike, Sliver and multiple commercial network scanners. * The initial ingress point in this incident was a pa
Threat Advisory: Atlassian Confluence zero-day vulnerability under active exploitation
Cisco Talos is monitoring reports of an actively exploited zero-day vulnerability in Confluence Data Center and Server. Confluence is a Java-based corporate Wiki employed by numerous enterprises. At this time, it is confirmed that all supported versions of Confluence are affecte
Threat Advisory: Zero-day vulnerability in Microsoft diagnostic tool MSDT could lead to code execution
A recently discovered zero-day vulnerability in the Microsoft Windows Support Diagnostic Tool (MSDT) made headlines over the past few days. CVE-2022-30190, also known under the name "Follina," exists when MSDT is called using the URL protocol from an application, such as Microso
Threat Advisory: Critical F5 BIG-IP Vulnerability
Summary A recently disclosed vulnerability in F5 Networks' BIG-IP could allow an unauthenticated attacker to access the BIG-IP system to execute arbitrary system commands, create and delete files, disable services and could lead to additional malicious activity. This vulnerabil