Team Cymru | Breaking Cybersecurity News | The Hacker News

The threat actors linked to the malware loader known as IcedID have made updates to the BackConnect (BC) module that's used for post-compromise activity on hacked systems, new findings from Team Cymru reveal. IcedID, also called BokBot , is a strain of malware similar to  Emotet  and  QakBot  that started off as a banking trojan in 2017, before switching to the role of an initial access facilitator for other payloads. Recent versions of the malware have been  observed  removing functionality related to online banking fraud to prioritize ransomware delivery. The BackConnect (BC) module,  first documented  by Netresec in October 2022, relies on a proprietary command-and-control (C2) protocol to exchange commands between a server and the infected host. The protocol, which comes with a VNC component for remote access, has also been identified in other malware such as the now-discontinued  BazarLoader  and QakBot. In December 2022, Team ...

The threat actors behind the  Vidar malware  have made changes to their backend infrastructure, indicating attempts to retool and conceal their online trail in response to public disclosures about their modus operandi. "Vidar threat actors continue to rotate their backend IP infrastructure, favoring providers in Moldova and Russia," cybersecurity company Team Cymru said in a new analysis shared with The Hacker News. Vidar  is a commercial information stealer that's known to be active since late 2018. It's also a fork of another stealer malware called  Arkei  and is offered for sale between $130 and $750 depending on the subscription tier. Typically delivered through phishing campaigns and sites advertising cracked software, the malware comes with a wide range of capabilities to harvest sensitive information from infected hosts. Vidar has also been  observed  to be distributed via rogue Google Ads and a malware loader dubbed Bumblebee. Team Cymru...

Cybersecurity researchers are calling attention to a free-to-use browser automation framework that's being increasingly used by threat actors as part of their attack campaigns. "The framework contains numerous features which we assess may be utilized in the enablement of malicious activities," researchers from Team Cymru  said  in a new report published Wednesday. "The technical entry bar for the framework is purposefully kept low, which has served to create an active community of content developers and contributors, with actors in the underground economy advertising their time for the creation of bespoke tooling." The U.S. cybersecurity company said it observed command-and-control (C2) IP addresses associated with malware such as  Bumblebee ,  BlackGuard , and  RedLine Stealer  establishing connections to the downloads subdomain of Bablosoft ("downloads.bablosoft[.]com"), the maker of the Browser Automation Studio (BAS). Bablosoft was previously...

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...