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A cybercrime group with links to the RansomHub ransomware has been observed using a new tool designed to terminate endpoint detection and response (EDR) software on compromised hosts, joining the likes of other similar programs like AuKill (aka AvNeutralizer) and Terminator . The EDR-killing utility has been dubbed EDRKillShifter by cybersecurity company Sophos, which discovered the tool in connection with a failed ransomware attack in May 2024. "The EDRKillShifter tool is a 'loader' executable – a delivery mechanism for a legitimate driver that is vulnerable to abuse (also known as a 'bring your own vulnerable driver,' or BYOVD , tool)," security researcher Andreas Klopsch said . "Depending on the threat actor's requirements, it can deliver a variety of different driver payloads." RansomHub , a suspected rebrand of the Knight ransomware, surfaced in February 2024, leveraging known security flaws to obtain initial access and drop legitimate rem...

A newly discovered attack vector in GitHub Actions artifacts dubbed ArtiPACKED could be exploited to take over repositories and gain access to organizations' cloud environments. "A combination of misconfigurations and security flaws can make artifacts leak tokens, both of third party cloud services and GitHub tokens, making them available for anyone with read access to the repository to consume," Palo Alto Networks Unit 42 researcher Yaron Avital said in a report published this week. "This allows malicious actors with access to these artifacts the potential of compromising the services to which these secrets grant access." The cybersecurity company said it primarily observed the leakage of GitHub tokens (e.g., GITHUB_TOKEN and ACTIONS_RUNTIME_TOKEN), which could not only give malicious actors unauthorized access to the repositories, but also grant them the ability to poison the source code and get it pushed to production via CI/CD workflows. Artifacts in...

A previously unknown threat actor has been attributed to a spate of attacks targeting Azerbaijan and Israel with an aim to steal sensitive data. The attack campaign, detected by NSFOCUS on July 1, 2024, leveraged spear-phishing emails to single out Azerbaijani and Israeli diplomats. The activity is being tracked under the moniker Actor240524 . "Actor240524 possesses the ability to steal secrets and modify file data, using a variety of countermeasures to avoid overexposure of attack tactics and techniques," the cybersecurity company said in an analysis published last week. The attack chains commence with the use of phishing emails bearing Microsoft Word documents that, upon opening, urge the recipients to " Enable Content " and run a malicious macro responsible for executing an intermediate loader payload codenamed ABCloader ("MicrosoftWordUpdater.log"). In the next step, ABCloader acts as a conduit to decrypt and load a DLL malware called ABCsync (...

Cybersecurity researchers have discovered a new variant of the Gafgyt botnet that's targeting machines with weak SSH passwords to ultimately mine cryptocurrency on compromised instances using their GPU computational power. This indicates that the "IoT botnet is targeting more robust servers running on cloud native environments," Aqua Security researcher Assaf Morag said in a Wednesday analysis. Gafgyt (aka BASHLITE, Lizkebab, and Torlus), known to be active in the wild since 2014, has a history of exploiting weak or default credentials to gain control of devices such as routers, cameras, and digital video recorders (DVRs). It's also capable of leveraging known security flaws in Dasan, Huawei, Realtek, SonicWall, and Zyxel devices. The infected devices are corralled into a botnet capable of launching distributed denial-of-service (DDoS) attacks against targets of interest. There is evidence to suggest that Gafgyt and Necro are operated by a threat group calle...

An ongoing social engineering campaign with alleged links to the Black Basta ransomware group has been linked to "multiple intrusion attempts" with the goal of conducting credential theft and deploying a malware dropper called SystemBC. "The initial lure being utilized by the threat actors remains the same: an email bomb followed by an attempt to call impacted users and offer a fake solution," Rapid7 said , adding "external calls were typically made to the impacted users via Microsoft Teams." The attack chain then convinces the user to download and install a legitimate remote access software named AnyDesk, which acts as a channel for deploying follow-on payloads and exfiltrate sensitive data. This includes the use of an executable called "AntiSpam.exe" that purports to download email spam filters and urges users to enter their Windows credentials to complete the update. The step is followed by the execution of several binaries, DLL files, ...

A coalition of law enforcement agencies coordinated by the U.K. National Crime Agency (NCA) has led to the arrest and extradition of a Belarussian and Ukrainian dual-national believed to be associated with Russian-speaking cybercrime groups. Maksim Silnikau (aka Maksym Silnikov), 38, went by the online monikers J.P. Morgan, xxx, and lansky. He was extradited to the U.S. from Poland on August 9, 2024, to face charges related to international computer hacking and wire fraud schemes. "J.P. Morgan and his associates are elite cyber criminals who practiced extreme operational and online security in an effort to avoid law enforcement detection," the NCA said in a statement. These individuals, the agency said, were responsible for the development and distribution of ransomware strains such as Reveton and Ransom Cartel , as well as exploit kits like Angler . Reveton, introduced in 2011, has been described as the "first ever ransomware-as-a-service business model." V...

Simply relying on traditional password security measures is no longer sufficient. When it comes to protecting your organization from credential-based attacks, it is essential to lock down the basics first. Securing your Active Directory should be a priority – it is like making sure a house has a locked front door before investing in a high-end alarm system. Once the fundamentals are covered, look at how integrating external attack surface management (EASM) can significantly augment your password security, offering a robust shield against potential cyber threats and breaches.  First Secure Your Active Directory IT administrators should not just adhere to the minimum password policy standards by including complexity mandates. To enhance Active Directory security, they should enforce a policy that prohibits users from generating feeble passwords and incorporate a tool to detect and block the use of compromised passwords. passwords and adding a solution that can check for the use o...

Monitoring evolving DDoS trends is essential for anticipating threats and adapting defensive strategies. The comprehensive Gcore Radar Report for the first half of 2024 provides detailed insights into DDoS attack data, showcasing changes in attack patterns and the broader landscape of cyber threats. Here, we share a selection of findings from the full report. Key Takeaways The number of DDoS attacks in H1 2024 has increased by 46% compared to the same period last year, reaching 445K in Q2 2024. Compared to data for the previous six months (Q3–4 2023), it increased by 34%. Peak attack power increased slightly: The most powerful attack in H1 2024 reached 1.7 Tbps. By comparison, in 2023, it was 1.6 Tbps. Although there has only been an increase of 0.1 Tbps in a year, this still indicates a gain in power that poses a significant danger. To put this into perspective, a terabit per second (Tbps) represents a massive amount of data flooding a network, equivalent to over 212,000 high-d...

Microsoft on Tuesday shipped fixes to address a total of 90 security flaws , including 10 zero-days, of which six have come under active exploitation in the wild. Of the 90 bugs, nine are rated Critical, 80 are rated Important, and one is rated Moderate in severity. This is also in addition to 36 vulnerabilities that the tech giant resolved in its Edge browser since last month. The Patch Tuesday updates are notable for addressing six actively exploited zero-days - CVE-2024-38189 (CVSS score: 8.8) - Microsoft Project Remote Code Execution Vulnerability CVE-2024-38178 (CVSS score: 7.5) - Windows Scripting Engine Memory Corruption Vulnerability CVE-2024-38193 (CVSS score: 7.8) - Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability CVE-2024-38106 (CVSS score: 7.0) - Windows Kernel Elevation of Privilege Vulnerability CVE-2024-38107 (CVSS score: 7.8) - Windows Power Dependency Coordinator Elevation of Privilege Vulnerability CVE-2024-38213 (CVS...