REvil ransomware attack against MSPs and its clients around the world

An attack perpetrated by REvil aka Sodinokibi ransomware gang against Managed Service Providers (MSPs) and their clients was discovered on July 2. Some of the victims reportedly have been compromised a popular MSP software which led to encryption of their customers. Continue reading REvil ransomware attack against MSPs and its clients around the world

Zero-day vulnerabilities in Microsoft Exchange Server

The four vulnerabilities inside Microsoft Exchange Server allow an attacker to compromise a vulnerable server. As a result, an attacker will gain access to all registered email accounts, or be able to execute arbitrary code (remote code execution or RCE) within the Exchange Server context. Continue reading Zero-day vulnerabilities in Microsoft Exchange Server

Sunburst: connecting the dots in the DNS requests

We matched private and public DNS data for the SUNBURST-malware root C2 domain with the CNAME records, to identify who was targeted for further exploitation. In total, we analyzed 1722 DNS records, leading to 1026 unique target name parts and 964 unique UIDs. Continue reading Sunburst: connecting the dots in the DNS requests

Chrome 0-day exploit CVE-2019-13720 used in Operation WizardOpium

Recently, we caught a new unknown exploit for Chrome browser. We promptly reported this to the Google. After reviewing of the PoC we provided, the company confirmed there was a zero-day vulnerability and assigned it CVE-2019-13720. Continue reading Chrome 0-day exploit CVE-2019-13720 used in Operation WizardOpium