Corelight Labs Team

In January 2022, Microsoft disclosed a remote code execution vulnerability for Internet Information Server (IIS) identified as CVE-2022-21907, which they have subsequently reported as wormable. Through Microsoft, Corelight Labs was able to review a... Read more »

We recently discussed some methods for detecting the Log4j exploit, and we’ve now developed another method that everyone running Zeek® or a Corelight sensor can use. Our new approach is based on the rarity of legitimate downloads of Java via LDAP.... Read more »

On its surface, CVE-2021-42292 doesn’t look like the kind of vulnerability that a network-based tool can find reliably. Marked by Microsoft as a local file format vulnerability, security veterans would expect that between encryption and encoding,... Read more »

Recently Blackberry analyzed a new GoLang Remote Access Trojan (RAT) named “ChaChi.” This sample was interesting in that it tunnels information over DNS as its preferred command and control (C2) mechanism. We downloaded two PCAPs from the malware... Read more »

Recently Blackberry analyzed a new GoLang Remote Access Trojan (RAT) named “ChaChi.” This sample was interesting in that it tunnels information over DNS as its preferred command and control (C2) mechanism. We downloaded two PCAPs from the malware... Read more »

Recently, Trustwave reported on a new malware family which they discovered during a breach investigation. The backdoor, dubbed Pingback, executes on Windows systems and communicates with its controller via ICMP messages. ICMP (Internet Control... Read more »