Rare Backdoors Suspected to be Tied to Gelsemium APT Found in Targeted Attack in Southeast Asian Government

A cluster of threat actor activity that Unit 42 observed attacking a Southeast Asian government target could provide insight into a rarely seen, stealthy APT group known as Gelsemium. The researchers found this activity as part of an investigation into Read More …

Flax Typhoon using legitimate software to quietly access Taiwanese organizations

Microsoft has identified a nation-state activity group tracked as Flax Typhoon, based in China, that is targeting dozens of organizations in Taiwan with the likely intention of performing espionage. Flax Typhoon gains and maintains long-term access to Taiwanese organizations’ networks Read More …

Hello Ransomware Uses Updated China Chopper Web Shell, SharePoint Vulnerability

In January, Trend Micro researchers encountered a new ransomware using .hello as its extension in one of our cases that possibly arrived via a SharePoint server vulnerability. This appeared to be a new ransomware family dubbed as the Hello ransomware Read More …

Hafnium’s China Chopper: a ‘slick’ and tiny web shell for creating server backdoors

Researchers have provided insight into China Chopper, a web shell used by the state-sponsored Hafnium hacking group. Hafnium is a group of cyberattackers originating from China. The collective recently came into the spotlight due to Microsoft linking them to recent Read More …

Threat Actors Still Exploiting SharePoint Vulnerability to Attack Middle East Government Organizations

On September 10, 2019, we observed unknown threat actors exploiting a vulnerability in SharePoint described in CVE-2019-0604 to install several webshells on the website of a Middle East government organization. One of these webshells is the open source AntSword webshell freely available on Read More …