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Microsoft on Friday disclosed that a single activity group in August 2022 achieved initial access and breached Exchange servers by chaining the  two newly disclosed zero-day flaws  in a limited set of attacks aimed at less than 10 organizations globally. "These attacks installed the Chopper web shell to facilitate hands-on-keyboard access, which the attackers used to perform Active Directory reconnaissance and data exfiltration," the Microsoft Threat Intelligence Center (MSTIC)  said  in a new analysis. The weaponization of the vulnerabilities is expected to ramp up in the coming days, Microsoft further warned, as malicious actors co-opt the exploits into their toolkits, including deploying ransomware, due to the "highly privileged access Exchange systems confer onto an attacker." The tech giant attributed the ongoing attacks with medium confidence to a state-sponsored organization, adding it was already investigating these attacks when the Zero Day Initiative d

Since its emergence, Generative AI has revolutionized enterprise productivity. GenAI tools enable faster and more effective software development, financial analysis, business planning, and customer engagement. However, this business agility comes with significant risks, particularly the potential for sensitive data leakage. As organizations attempt to balance productivity gains with security concerns, many have been forced to choose between unrestricted GenAI usage to banning it altogether. A new e-guide by LayerX titled 5 Actionable Measures to Prevent Data Leakage Through Generative AI Tools is designed to help organizations navigate the challenges of GenAI usage in the workplace. The guide offers practical steps for security managers to protect sensitive corporate data while still reaping the productivity benefits of GenAI tools like ChatGPT. This approach is intended to allow companies to strike the right balance between innovation and security. Why Worry About ChatGPT? The e

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) on Friday  added  a recently disclosed critical flaw impacting Atlassian's Bitbucket Server and Data Center to the Known Exploited Vulnerabilities ( KEV ) catalog, citing evidence of active exploitation. Tracked as  CVE-2022-36804 , the issue relates to a command injection vulnerability that could allow malicious actors to gain arbitrary code execution on susceptible installations by sending a specially crafted HTTP request. Successful exploitation, however, banks on the prerequisite that the attacker already has access to a public repository or possesses read permissions to a private Bitbucket repository. "All versions of Bitbucket Server and Datacenter released after 6.10.17 including 7.0.0 and newer are affected, this means that all instances that are running any versions between 7.0.0 and 8.3.0 inclusive are affected by this vulnerability," Atlassian  noted  in a late August 2022 advisory. CISA did

Threat actors have been found deploying never-before-seen post-compromise implants in VMware's virtualization software to seize control of infected systems and evade detection. Google's Mandiant threat intelligence division referred to it as a "novel malware ecosystem" that impacts VMware ESXi, Linux vCenter servers, and Windows virtual machines, allowing attackers to maintain persistent access to the  hypervisor  as well as execute arbitrary commands. The  hyperjacking attacks , per the cybersecurity vendor, involved the use of malicious vSphere Installation Bundles ( VIBs ) to sneak in two implants, dubbed VIRTUALPITA and VIRTUALPIE, on the ESXi hypervisors. "It is important to highlight that this is not an external remote code execution vulnerability; the attacker needs admin-level privileges to the ESXi hypervisor before they can deploy malware," Mandiant researchers Alexander Marvi, Jeremy Koppen, Tufail Ahmed, and Jonathan Lepore said in an exhaus

An espionage-focused threat actor has been observed using a steganographic trick to conceal a previously undocumented backdoor in a Windows logo in its attacks against Middle Eastern governments. Broadcom's Symantec Threat Hunter Team attributed the updated tooling to a hacking group it tracks under the name  Witchetty , which is also known as  LookingFrog , a subgroup operating under the TA410 umbrella. Intrusions involving TA410 – which is believed to share connections with a Chinese threat group known as APT10 (aka Cicada, Stone Panda, or TA429) – primarily feature a modular implant called LookBack. Symantec's latest analysis of attacks between February and September 2022, during which the group targeted the governments of two Middle Eastern countries and the stock exchange of an African nation, highlights the use of another backdoor dubbed Stegmap. The new malware leverages  steganography  – a technique used to embed a message (in this case, malware) in a non-secret d

A social engineering campaign leveraging job-themed lures is weaponizing a years-old remote code execution flaw in Microsoft Office to deploy Cobalt Strike beacons on compromised hosts. "The payload discovered is a leaked version of a Cobalt Strike beacon," Cisco Talos researchers Chetan Raghuprasad and Vanja Svajcer  said  in a new analysis published Wednesday. "The beacon configuration contains commands to perform targeted process injection of arbitrary binaries and has a high reputation domain configured, exhibiting the redirection technique to masquerade the beacon's traffic." The malicious activity, discovered in August 2022, attempts to exploit the vulnerability  CVE-2017-0199 , a remote code execution issue in Microsoft Office, that allows an attacker to take control of an affected system. The entry vector for the attack is a phishing email containing a Microsoft Word attachment that employs job-themed lures for roles in the U.S. government and Publ

Endpoint devices like desktops, laptops, and mobile phones enable users to connect to enterprise networks and use their resources for their day-to-day work. However, they also expand the attack surface and make the organisation vulnerable to malicious cyberattacks and data breaches. Why Modern Organisations Need EDR According to the 2020 global  risk report  by Ponemon Institute, smartphones, laptops, mobile devices, and desktops are some of the most vulnerable entry points that allow threat actors to compromise enterprise networks. Security teams must assess and address the security risks created by these devices before they can damage the organisation. And for this, they require Endpoint Detection & Response (EDR). EDR solutions provide real-time visibility into endpoints and detect threats like malware and ransomware. By continuously monitoring endpoints, they enable security teams to uncover malicious activities, investigate threats, and initiate appropriate responses to pr