Russian RomCom Attacks Target Ukrainian Government with New SingleCamper RAT Variant

The Russian threat actor known as RomCom has been linked to a new wave of cyber attacks aimed at Ukrainian government agencies and unknown Polish entities since at least late 2023. The intrusions are characterized by the use of a variant of the RomCom RAT dubbed SingleCamper aka SnipBot or RomCom...

Protecting major events: An incident response blueprint

Ensuring the cybersecurity of major events -- whether it's sports, professional conferences, expos, inter-government meetings or other gatherings -- is a complex and time-intensive task. It requires a comprehensive approach and collaboration among various stakeholders, including vendors,...

Privilege Escalation

Tgithub.com/talos-systems/talos is vulnerable to Privilege Escalation. The vulnerability is due to improper validation of the requests during the certificate signing process for worker nodes in the Talos cluster. It allows a control plane node to issue Talos API certificates that grant unauthoriz...

Ghidra data type archive for Windows driver functions

While reverse-engineering Windows drivers with Ghidra, it is common to encounter a function or data type that is not recognized during disassembly. This is because Ghidra does not natively include the majority of the definitions for data types and functions used by Windows drivers. Thankfully,...

Vulnerability in popular PDF reader could lead to arbitrary code execution; Multiple issues in GNOME project

Cisco Talos' Vulnerability Research team recently disclosed six new security vulnerabilities across a range of software, including one in a popular PDF reader that could lead to arbitrary code execution. Foxit PDF Reader, one of the most popular alternatives to Adobe Acrobat, contains a memory...

Largest Patch Tuesday since July includes two exploited in the wild, three critical vulnerabilities

The largest Microsoft Patch Tuesday since July includes two vulnerabilities that have been exploited in the wild and three other critical issues across the company's range of hardware and software offerings. October's monthly security update from Microsoft includes fixes for 117 CVEs, the most in...

CISA is warning us (again) about the threat to critical infrastructure networks

Government-run water systems and other critical infrastructure are still at risk from state-sponsored actors, according to a renewed warning from the U.S. Cybersecurity and Infrastructure Security Agency. CISA released an advisory last week on the matter of days after a small water treatment...

Foxit Reader checkbox Calculate use-after-free vulnerability

Talos Vulnerability Report TALOS-2024-1967 Foxit Reader checkbox Calculate use-after-free vulnerability October 2, 2024 CVE Number CVE-2024-28888 SUMMARY A use-after-free vulnerability exists in the way Foxit Reader 2024.1.0.23997 handles a checkbox field object. A specially crafted Javascript co...

Talos discovers denial-of-service vulnerability in Microsoft Audio Bus; Potential remote code execution in popular open-source PLC

Cisco Talos' Vulnerability Research team recently disclosed two vulnerabilities in Microsoft products that have been patched by the company over the past two Patch Tuesdays. One is a vulnerability in the High-Definition Audio Bus Driver in Windows systems that could lead to a denial of service,...

Microsoft Pragmatic General Multicast Server PgmCloseConnection stale memory dereference

Talos Vulnerability Report TALOS-2024-2062 Microsoft Pragmatic General Multicast Server PgmCloseConnection stale memory dereference September 25, 2024 CVE Number CVE-2024-38140 SUMMARY A memory corruption vulnerability exists in the Pragmatic General Multicast server in Microsoft Windows 10 Kerne...

Vulnerability in Acrobat Reader could lead to remote code execution; Microsoft patches information disclosure issue in Windows API

Cisco Talos' Vulnerability Research team discovered two vulnerabilities have been disclosed and fixed over the past few weeks. Talos discovered a time-of-check time-of-use vulnerability in Adobe Acrobat Reader, one of the most popular PDF readers currently available, and an information disclosure...

DragonRank, a Chinese-speaking SEO manipulator service provider

Key Takeaways Cisco Talos is disclosing a new threat called "DragonRank" that primarily targets countries in Asia and a few in Europe, operating PlugX and BadIIS for search engine optimization SEO rank manipulation. DragonRank exploits targets' web application services to deploy a web shell and...

Vulnerability in Tencent WeChat custom browser could lead to remote code execution

Certain versions of WeChat, a popular messaging app created by tech giant Tencent, contain a type confusion vulnerability that could allow an adversary to execute remote code. While this issue, CVE-2023-3420, was disclosed and patched in the V8 engine in June 2023, the WeChat Webview component wa...

Malware Attackers Using MacroPack to Deliver Havoc, Brute Ratel, and PhantomCore

Threat actors are likely employing a tool designated for red teaming exercises to serve malware, according to new findings from Cisco Talos. The program in question is a payload generation framework called MacroPack, which is used to generate Office documents, Visual Basic scripts, Windows...

Threat actors using MacroPack to deploy Brute Ratel, Havoc and PhantomCore payloads

Cisco Talos recently discovered several related Microsoft Office documents uploaded to VirusTotal by various actors between May and July 2024 that were all generated by a version of a payload generator framework called "MacroPack." MacroPack is a framework designated for Red Team exercises, but w...

What kind of summer has it been?

Hello Talos followers. I'm back for my annual takeover of the Threat Source newsletter. First, an update on that killer sloth movie I was so excited about in August 2023. "Slotherhouse" debuted with an impressive $137,133 at the box office, with critics hailing its various set pieces such as "dea...

GO-2022-0995 Talos worker join token can be used to get elevated access level to the Talos API in github.com/talos-systems/talos

Talos worker join token can be used to get elevated access level to the Talos API in github.com/talos-systems/talos...

Hackers Could Exploit Microsoft Teams on macOS to Steal Data

Cisco Talos reveals 8 vulnerabilities in Microsofts macOS apps, exploiting TCC framework weaknesses. Hackers can bypass security, inject…...

How multiple vulnerabilities in Microsoft apps for macOS pave the way to stealing permissions

Cisco Talos has identified eight vulnerabilities in Microsoft applications for the macOS operating system. An adversary could exploit these vulnerabilities by injecting malicious libraries into Microsofts applications to gain their entitlements and user-granted permissions. Permissions regulate...

Microsoft Excel for macOS library injection vulnerability

Talos Vulnerability Report TALOS-2024-1976 Microsoft Excel for macOS library injection vulnerability August 19, 2024 CVE Number CVE-2024-43106 SUMMARY A library injection vulnerability exists in Microsoft Excel 16.83 for macOS. A specially crafted library can leverage Excel’s access privileges,...