TrueBot | Breaking Cybersecurity News | The Hacker News

Cybersecurity agencies have warned about the emergence of new variants of the TrueBot malware. This enhanced threat is now targeting companies in the U.S. and Canada with the intention of extracting confidential data from infiltrated systems. These sophisticated attacks exploit a critical vulnerability ( CVE-2022-31199 ) in the widely used Netwrix Auditor server and its associated agents. This vulnerability enables unauthorized attackers to execute malicious code with the SYSTEM user's privileges, granting them unrestricted access to compromised systems. The TrueBot malware , linked with cybercriminal collectives Silence and FIN11, is deployed to siphon off data and disseminate ransomware, jeopardising the safety of numerous infiltrated networks. The cybercriminals gain their initial foothold by exploiting the cited vulnerability, then proceed to install TrueBot. Once they have breached the networks, they install the FlawedGrace Remote Access Trojan (RAT) to escalate their p...

A surge in TrueBot activity was observed in May 2023, cybersecurity researchers disclosed. "TrueBot is a downloader trojan botnet that uses command and control servers to collect information on compromised systems and uses that compromised system as a launching point for further attacks," VMware's Fae Carlisle  said . Active since at least 2017, TrueBot is linked to a group known as Silence that's believed to share overlaps with the notorious Russian cybercrime actor known as  Evil Corp . Recent  TrueBot infections  have leveraged a critical flaw in Netwrix Auditor ( CVE-2022-31199 , CVSS score: 9.8) as well as  Raspberry Robin  as delivery vectors. The attack chain documented by VMware, on the other hand, starts off with a drive-by-download of an executable named " update.exe " from Google Chrome, suggesting that users are lured into downloading the malware under the pretext of a software update. Once run, update.exe establishes connections with a ...

A new analysis of Raspberry Robin's attack infrastructure has  revealed  that it's possible for other threat actors to repurpose the infections for their own malicious activities, making it an even more potent threat. Raspberry Robin (aka QNAP worm), attributed to a threat actor dubbed DEV-0856, is a malware that has  increasingly   come under the radar  for being used in attacks aimed at finance, government, insurance, and telecom entities. Given its use by multiple threat actors to drop a wide range of payloads such as SocGholish , Bumblebee ,  TrueBot ,  IcedID , and  LockBit  ransomware, it's believed to be a pay-per-install (PPI) botnet capable of serving next-stage malware. Raspberry Robin, notably, employs infected USB drives as a propagation mechanism and leverages breached QNAP network-attached storage (NAS) devices as first-level command-and-control (C2). Cybersecurity firm SEKOIA said it was able to identify at least eight vi...

If you invite guest users into your Entra ID tenant, you may be opening yourself up to a surprising risk.  A gap in access control in Microsoft Entra's subscription handling is allowing guest users to create and transfer subscriptions into the tenant they are invited into, while maintaining full ownership of them.  All the guest user needs are the permissions to create subscriptions in their home tenant, and an invitation as a guest user into an external tenant. Once inside, the guest user can create subscriptions in their home tenant, transfer them into the external tenant, and retain full ownership rights. This stealthy privilege escalation tactic allows a guest user to gain a privileged foothold in an environment where they should only have limited access. Many organizations treat guest accounts as low-risk based on their temporary, limited access, but this behavior, which works as designed, opens the door to known attack paths and lateral movement within the resource t...