truebot malware

Truebot malware is a malicious software that infiltrates computer systems, often without the user's knowledge, to exploit and damage the device. It was primarily delivered by cyber threat actors via malicious phishing email attachments, but newer versions observed in 2023 also gained initial access through exploiting CVE-2022-31199, allowing for large-scale deployment within compromised environments. This malware can be hidden within various legitimate file formats used for malicious purposes and is capable of enumerating the affected system’s computer names and domain names. Notably, Truebot is generally linked to the Silence Group, and has been identified with a low degree of confidence as having infrastructure overlaps with TrickBot, Ryuk, FIN7, and other malware operations. In April 2023, Clop ransomware was observed exploiting vulnerable PaperCut servers and installing Truebot malware, similar to its use in GoAnywhere attacks. Once gaining initial access, Cl0p members deploy the TrueBot malware and a Cobalt Strike beacon to creep through the network and collect data. The CL0P actors are known to delete traces of Truebot malware after it has been used, making detection and mitigation more challenging. On July 6, 2023, US and Canadian authorities issued a warning about increased Truebot malware activity involving new tactics, techniques, and procedures (TTPs). The joint advisory came from the Cybersecurity and Infrastructure Security Agency (CISA), the Federal Bureau of Investigation (FBI), the Multi-State Information Sharing and Analysis Center (MS-ISAC), and the Canadian Centre for Cyber Security (CCCS). They noted that threat actors were leveraging newly identified Truebot malware variants to target organizations in the US and Canada via new techniques.