Yifan YF325 httpd do_wds stack-based buffer overflow vulnerability

Talos Vulnerability Report TALOS-2023-1765 Yifan YF325 httpd dowds stack-based buffer overflow vulnerability October 11, 2023 CVE Number CVE-2023-31272 SUMMARY A stack-based buffer overflow vulnerability exists in the httpd dowds functionality of Yifan YF325 v1.020221108. A specially crafted...

QakBot Threat Actors Still in Action, Using Ransom Knight and Remcos RAT in Latest Attacks

Despite the disruption to its infrastructure, the threat actors behind the QakBot malware have been linked to an ongoing phishing campaign since early August 2023 that led to the delivery of Ransom Knight aka Cyclops ransomware and Remcos RAT. This indicates that "the law enforcement operation ma...

Qakbot-affiliated actors distribute Ransom Knight malware despite infrastructure takedown

The threat actors behind the Qakbot malware have been conducting a campaign since early August 2023 in which they have been distributing Ransom Knight ransomware and the Remcos backdoor via phishing emails. Notably, this activity appeared to begin before the FBI seized Qakbot infrastructure in la...

Threat Roundup for September 22 to September 29

Today, Talos is publishing a glimpse into the most prevalent threats weve observed between Sept. 22 and Sept. 29. As with previous roundups, this post isnt meant to be an in-depth analysis. Instead, this post will summarize the threats weve observed by highlighting key behavioral characteristics,...

10 new vulnerabilities disclosed by Talos, including use-after-free issue in Google Chrome

Cisco Talos disclosed 10 vulnerabilities over the past two weeks affecting a range of software, including the popular Google Chrome web browser. Attackers could exploit these vulnerabilities to carry out a variety of attacks, in some cases gaining the ability to execute remote code on the targete...

Accusoft ImageGear CreateDIBfromPict out-of-bounds write vulnerability

Talos Vulnerability Report TALOS-2023-1729 Accusoft ImageGear CreateDIBfromPict out-of-bounds write vulnerability September 25, 2023 CVE Number CVE-2023-23567 SUMMARY A heap-based buffer overflow vulnerability exists in the CreateDIBfromPict functionality of Accusoft ImageGear 20.1. A specially...

Accusoft ImageGear pictwread heap-based buffer overflow vulnerability

Talos Vulnerability Report TALOS-2023-1760 Accusoft ImageGear pictwread heap-based buffer overflow vulnerability September 25, 2023 CVE Number CVE-2023-35002 SUMMARY A heap-based buffer overflow vulnerability exists in the pictwread functionality of Accusoft ImageGear 20.1. A specially crafted...

You can try to hide your firmware from Kelly Patterson, but she’ll find it (and break it)

How her work illustrates the difference Talos vulnerability research team makes When Kelly Patterson first learned how to code by making small programs in her high school class, she preferred breaking her creations to building them. Shed make a game and then spend double the time debugging that...

Eight vulnerabilities in Open Automation Software Platform could lead to information disclosure, improper authentication

Cisco Talos recently disclosed eight vulnerabilities in the engine configuration functionality in Open Automations Software Platform. OAS Platform is commonly found in industrial operations and enterprise environments. It allows various devices, including PLCs, servers, files, databases and...

Open Automation Software OAS Platform OAS Engine configuration management information disclosure vulnerability

Talos Vulnerability Report TALOS-2023-1774 Open Automation Software OAS Platform OAS Engine configuration management information disclosure vulnerability September 5, 2023 CVE Number CVE-2023-32271 SUMMARY An information disclosure vulnerability exists in the OAS Engine configuration management...

Open Automation Software OAS Platform OAS Engine authentication bypass vulnerability

Talos Vulnerability Report TALOS-2023-1770 Open Automation Software OAS Platform OAS Engine authentication bypass vulnerability September 5, 2023 CVE Number CVE-2023-34998 SUMMARY An authentication bypass vulnerability exists in the OAS Engine functionality of Open Automation Software OAS Platfor...

Open Automation Software OAS Platform OAS Engine configuration file write vulnerability

Talos Vulnerability Report TALOS-2023-1771 Open Automation Software OAS Platform OAS Engine configuration file write vulnerability September 5, 2023 CVE Number CVE-2023-32615 SUMMARY A file write vulnerability exists in the OAS Engine configuration functionality of Open Automation Software OAS...

Phishing-as-a-Service Gets Smarter: Microsoft Sounds Alarm on AiTM Attacks

Microsoft is warning of an increase in adversary-in-the-middle AiTM phishing techniques, which are being propagated as part of the phishing-as-a-service PhaaS cybercrime model. In addition to an uptick in AiTM-capable PhaaS platforms, the tech giant noted that existing phishing services like...

Lazarus Group's infrastructure reuse leads to discovery of new malware

In the Lazarus Groups latest campaign, which we detailed in a recent blog, the North Korean state-sponsored actor is exploiting CVE-2022-47966, a ManageEngine ServiceDesk vulnerability to deploy multiple threats. In addition to their "QuiteRAT" malware, which we covered in the blog, we also...

Lazarus Group exploits ManageEngine vulnerability to deploy QuiteRAT

Cisco Talos discovered the North Korean state-sponsored actor Lazarus Group targeting internet backbone infrastructure and healthcare entities in Europe and the United States. This is the third documented campaign attributed to this actor in less than a year, with the actor reusing the same...

Three vulnerabilities in NVIDIA graphics driver could cause memory corruption

Piotr Bania of Cisco Talos discovered the vulnerabilities mentioned in this post. Cisco Talos recently disclosed three vulnerabilities in the shader functionality of the NVIDIA D3D10 driver that works with NVIDIAs graphics cards. The driver is vulnerable to memory corruption if an adversary sends...

Generating FLIRT signatures for Nim and other non-C programming languages

Adversaries are increasingly writing malware in programming languages such as Go, Rust, or Nim, because they present challenges to investigators using reverse-engineering tools designed to work best against the C family of languages. Its often difficult for reverse engineers examining non-C...

What Cisco Talos knows about the Rhysida ransomware

Cisco Talos is aware of the recent advisory published by the U.S. Department of Health and Human Services HHS warning the healthcare industry about Rhysida ransomware activity. As weve discussed recently, there has been huge growth in the ransomware and extortion space, potentially linked to the...

New Yashma Ransomware Variant Targets Multiple English-Speaking Countries

An unknown threat actor is using a variant of the Yashma ransomware to target various entities in English-speaking countries, Bulgaria, China, and Vietnam at least since June 4, 2023. Cisco Talos, in a new write-up, attributed the operation with moderate confidence to an adversary of likely...

Previewing Talos at BlackHat 2023

Welcome to this weeks edition of the Threat Source newsletter. The time has come once again for all of us well, not me specifically but lots of other Talos people to descend on Las Vegas for Hacker Summer Camp. Cisco Talos will be well-represented at BlackHat and DEF CON over the course of the ne...