QBot Trojan delivered via malspam campaign exploiting US election uncertainties

This blog post was authored by Jérôme Segura and Hossein Jazi. The 2020 US elections have been the subject of intense scrutiny and emotions, while happening in the middle of a global pandemic. As election night ended and uncertainty regarding the results began to creep in, threat actors decided t...

Ransomware Activity Targeting the Healthcare and Public Health Sector

Summary This advisory was updated to include information on Conti, TrickBot, and BazarLoader, including new IOCs and Yara Rules for detection. This advisory uses the MITRE Adversarial Tactics, Techniques, and Common Knowledge ATT &CK® version 7 framework. See the ATT&CK for Enterprise version 7 f...

Threat Roundup for October 23 to October 30

Today, Talos is publishing a glimpse into the most prevalent threats we've observed between Oct. 23 and Oct. 30. As with previous roundups, this post isn't meant to be an in-depth analysis. Instead, this post will summarize the threats we've observed by highlighting key behavioral characteristics...

Threat Roundup for October 16 to October 23

Today, Talos is publishing a glimpse into the most prevalent threats we've observed between Oct. 16 and Oct. 23. As with previous roundups, this post isn't meant to be an in-depth analysis. Instead, this post will summarize the threats we've observed by highlighting key behavioral characteristics...

CrimeOps of the KashmirBlack Botnet – Part II

Introduction The previous blog - “CrimeOps of the KasmirBlack Botnet - Part I” - described the DevOps behind the botnet. It showed how its well-designed infrastructure makes it easy to expand and add new exploits or payloads without much effort,and explained the evolution and version deployment o...

Vulntober: Multiple Mobile Browser Address Bar Spoofing Vulnerabilities

Today, we're announcing a coordinated vulnerability disclosure publication with our longtime mobile hacker friend, Rafay Baloch. If you'd like to just jump straight to the technical details for these vulnerabilities, I invite you to read his paper here. If you want to know more about why this...

Siemens S7-400 PLC has an industrial control device vulnerability

The S7-400 PLCs are programmable controllers for use in the mid- to high-grade performance range. A vulnerability exists in the Siemens S7-400 PLC for industrial control devices. An attacker can exploit the vulnerability to cause the control device to stop, the RUN light to go out, the STOP light...

Threat Roundup for October 9 to October 16

Today, Talos is publishing a glimpse into the most prevalent threats we've observed between Oct. 9 and Oct. 16. As with previous roundups, this post isn't meant to be an in-depth analysis. Instead, this post will summarize the threats we've observed by highlighting key behavioral characteristics,...

Microsoft Windows TCP/IP Remote Code Execution Vulnerability (CVE-2020-16898) – Automatically Discover, Prioritize and Remediate Using Qualys VMDR®

On October 13, 2020, Microsoft fixed a critical remote code execution vulnerability in the Windows TCP/IP stack for handling ICMPv6 Router Advertisement packets. While Microsoft ranks this vulnerability as “Exploitation More Likely,” we may see a proof-of-concept released soon. The security issue...

Threat Roundup for September 25 to October 2

Today, Talos is publishing a glimpse into the most prevalent threats we've observed between Sept. 25 and Oct. 2. As with previous roundups, this post isn't meant to be an in-depth analysis. Instead, this post will summarize the threats we've observed by highlighting key behavioral characteristics...

Threat Roundup for September 18 to September 25

Today, Talos is publishing a glimpse into the most prevalent threats we've observed between Sept. 18 and Sept. 25. As with previous roundups, this post isn't meant to be an in-depth analysis. Instead, this post will summarize the threats we've observed by highlighting key behavioral...

Technical Approaches to Uncovering and Remediating Malicious Activity

Summary This joint advisory is the result of a collaborative research effort by the cybersecurity authorities of five nations: Australia,1 Canada,2 New Zealand,34 the United Kingdom,5 and the United States.6 It highlights technical approaches to uncovering malicious activity and includes mitigati...

Threat Roundup for September 11 to September 18

Today, Talos is publishing a glimpse into the most prevalent threats we've observed between Sept. 11 and Sept. 18. As with previous roundups, this post isn't meant to be an in-depth analysis. Instead, this post will summarize the threats we've observed by highlighting key behavioral...

Threat Roundup for September 4 to September 11

Today, Talos is publishing a glimpse into the most prevalent threats we've observed between Sept. 4 and Sept. 11. As with previous roundups, this post isn't meant to be an in-depth analysis. Instead, this post will summarize the threats we've observed by highlighting key behavioral characteristic...

Nodesass is malware

The nodesass package is a piece of malware that steals environment variables and sends them to attacker controlled locations. All versions have been unpublished from the npm registry. Recommendation As this package is malware, if you find it installed in your environment, the real security concer...

GHSA-XFMW-2VMM-579C Nodesass is malware

The nodesass package is a piece of malware that steals environment variables and sends them to attacker controlled locations. All versions have been unpublished from the npm registry. Recommendation As this package is malware, if you find it installed in your environment, the real security concer...

GHSA-8GV6-G7VP-HR34 mysqljs is malware

The mysqljs package is a piece of malware that steals environment variables and sends them to attacker controlled locations. All versions have been unpublished from the npm registry. Recommendation As this package is malware, if you find it installed in your environment, the real security concern...

mysqljs is malware

The mysqljs package is a piece of malware that steals environment variables and sends them to attacker controlled locations. All versions have been unpublished from the npm registry. Recommendation As this package is malware, if you find it installed in your environment, the real security concern...

North Korea ATM Hack

The US Cybersecurity and Infrastructure Security Agency CISA published a long and technical alert describing a North Korea hacking scheme against ATMs in a bunch of countries worldwide: This joint advisory is the result of analytic efforts among the Cybersecurity and Infrastructure Security Agenc...

Cisco Releases Security Advisory for DVMRP Vulnerability in IOS XR Software

Cisco has released a security advisory on a vulnerability—CVE-2020-3566—in the Distance Vector Multicast Routing Protocol DVMRP feature of Cisco IOS XR software. This vulnerability affects Cisco devices running IOS XR software that have an active interface configured under multicast routing. A...