DLL hijacking | Breaking Cybersecurity News | The Hacker News

The threat actor linked to the exploitation of the recently disclosed security flaws in Microsoft SharePoint Server is using a bespoke command-and-control (C2) framework called AK47 C2 (also spelled ak47c2) in its operations. The framework includes at least two different types of clients, HTTP-based and Domain Name System ( DNS )-based, which have been dubbed AK47HTTP and AK47DNS, respectively, by Check Point Research. The activity has been attributed to Storm-2603 , which, according to Microsoft, is a suspected China-based threat actor that has leveraged the SharePoint flaws – CVE-2025-49706 and CVE-2025-49704 (aka ToolShell) – to deploy Warlock (aka X2anylock) ransomware. A previously unreported threat cluster, evidence gathered following an analysis of VirusTotal artifacts shows that the group may have been active since at least March 2025, deploying ransomware families like LockBit Black and Warlock together – something that's not observed commonly among established e-c...

A high-severity security flaw has been disclosed in ServiceNow's platform that, if successfully exploited, could result in data exposure and exfiltration. The vulnerability, tracked as CVE-2025-3648 (CVSS score: 8.2), has been described as a case of data inference in Now Platform through conditional access control list (ACL) rules. It has been codenamed Count(er) Strike . "A vulnerability has been identified in the Now Platform that could result in data being inferred without authorization," ServiceNow said in a bulletin. "Under certain conditional access control list (ACL) configurations, this vulnerability could enable unauthenticated and authenticated users to use range query requests to infer instance data that is not intended to be accessible to them." Cybersecurity company Varonis, which discovered and reported the flaw in February 2024, said it could have been exploited by malicious actors to obtain unauthorized access to sensitive information, inclu...

Bogus websites advertising Google Chrome have been used to distribute malicious installers for a remote access trojan called ValleyRAT. The malware, first detected in 2023, is attributed to a threat actor tracked as Silver Fox, with prior attack campaigns primarily targeting Chinese-speaking regions like Hong Kong, Taiwan, and Mainland China. "This actor has increasingly targeted key roles within organizations—particularly in finance, accounting, and sales department — highlighting a strategic focus on high-value positions with access to sensitive data and systems," Morphisec researcher Shmuel Uzan said in a report published earlier this week. Early attack chains have been observed delivering ValleyRAT alongside other malware families such as Purple Fox and Gh0st RAT, the latter of which has been extensively used by various Chinese hacking groups . As recently as last month, counterfeit installers for legitimate software have served as a distribution mechanism for t...

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Bogus installers for Adobe Acrobat Reader are being used to  distribute  a new multi-functional malware dubbed  Byakugan . The starting point of the attack is a PDF file written in Portuguese that, when opened, shows a blurred image and asks the victim to click on a link to download the Reader application to view the content. According to Fortinet FortiGuard Labs, clicking the URL leads to the delivery of an installer ("Reader_Install_Setup.exe") that activates the infection sequence. Details of the campaign were  first disclosed  by the AhnLab Security Intelligence Center (ASEC) last month. The attack chain leverages techniques like DLL hijacking and Windows User Access Control (UAC) bypass to load a malicious dynamic-link library (DLL) file named "BluetoothDiagnosticUtil.dll," which, in turn, loads unleashes the final payload. It also deploys a legitimate installer for a PDF reader like Wondershare PDFelement. The binary is equipped to gather and exfiltra...

A threat activity cluster tracked as  Earth Freybug  has been observed using a new malware called UNAPIMON to fly under the radar. "Earth Freybug is a cyberthreat group that has been active since at least 2012 that focuses on espionage and financially motivated activities," Trend Micro security researcher Christopher So  said  in a report published today. "It has been observed to target organizations from various sectors across different countries." The cybersecurity firm has described Earth Freybug as a subset within  APT41 , a China-linked cyber espionage group that's also tracked as Axiom, Brass Typhoon (formerly Barium), Bronze Atlas, HOODOO, Wicked Panda, and Winnti. The adversarial collective is known to rely on a combination of living-off-the-land binaries (LOLBins) and custom malware to realize its goals. Also adopted are techniques like dynamic-link library (DLL) hijacking and application programming interface (API) unhooking. Trend Micro said th...

Security researchers have detailed a new variant of a dynamic link library ( DLL ) search order hijacking technique that could be used by threat actors to bypass security mechanisms and achieve execution of malicious code on systems running Microsoft Windows 10 and Windows 11. The approach "leverages executables commonly found in the trusted WinSxS folder and exploits them via the classic DLL search order hijacking technique," cybersecurity firm Security Joes  said  in a new report exclusively shared with The Hacker News. In doing so, it allows adversaries to eliminate the need for elevated privileges when attempting to run nefarious code on a compromised machine as well as introduce potentially vulnerable binaries into the attack chain, as  observed   in the   past . DLL search order hijacking , as the name implies, involves  gaming the search order  used to load DLLs in order to execute malicious payloads for purposes of defense evasion, persiste...

An ongoing cyber attack campaign originating from China is targeting the Southeast Asian gambling sector to deploy Cobalt Strike beacons on compromised systems.  Cybersecurity firm SentinelOne said the tactics, techniques, and procedures point to the involvement of a threat actor tracked as  Bronze Starlight  (aka Emperor Dragonfly or Storm-0401), which has been linked to the use of  short-lived   ransomware families  as a smokescreen to conceal its espionage motives. "The threat actors abuse Adobe Creative Cloud, Microsoft Edge, and McAfee VirusScan executables vulnerable to DLL hijacking to deploy Cobalt Strike beacons," security researchers Aleksandar Milenkoski and Tom Hegel  said  in an analysis published today. It also bears noting that the campaign exhibits overlaps with an intrusion set monitored by ESET under the name  Operation ChattyGoblin . This activity, in turn, shares commonalities with a  supply chain attack  tha...

Dell's SupportAssist utility that comes pre-installed on millions of Dell laptops and PCs contains a security vulnerability that could allow malicious software or rogue logged-in users to escalate their privileges to administrator-level and access sensitive information. Discovered by security researchers at SafeBreach Labs , the vulnerability, identified as CVE-2019-12280, is a privilege-escalation issue and affects Dell's SupportAssist application for business PCs (version 2.0) and home PCs (version 3.2.1 and all prior versions). Dell SupportAssist, formerly known as Dell System Detect, checks the health of your system's hardware and software, alerting customers to take appropriate action to resolve them. To do so, it runs on your computer with SYSTEM-level permissions. With this high-level privileges, the utility interacts with the Dell Support website and automatically detects Service Tag or Express Service Code of your Dell product, scans the existing device d...

A team of security researchers from Cybellum, an Israeli zero-day prevention firm, has discovered a new Windows vulnerability that could allow hackers to take full control of your computer. Dubbed DoubleAgent , the new injecting code technique works on all versions of Microsoft Windows operating systems, starting from Windows XP to the latest release of Windows 10. What's worse? DoubleAgent exploits a 15-years-old undocumented legitimate feature of Windows called " Application Verifier ," which cannot be patched. Application Verifier is a runtime verification tool that loads DLLs (dynamic link library) into processes for testing purpose, allowing developers quickly detect and fix programming errors in their applications. Unpatchable Microsoft Application Verifier Exploit The vulnerability resides in how this Application Verifier tool handles DLLs. According to the researchers, as part of the process, DLLs are bound to the target processes in a Windows Regist...

Security researchers have disclosed local zero day DLL hijacking vulnerabilities in several applications developed by Corel Software that could allow an attacker to execute arbitrary commands on victims' computer, potentially affecting more than 100 million users. The security holes were publicly disclosed by Marcos Accossatto from a vulnerability research firm Core Security after the vendor didn't respond to his private disclosure about the flaws. Corel develops wide range of products including graphics, photo, video and other media editing programs. According to the researcher, when a media file associated with one of the vulnerable Corel products is opened, the product also loads a specifically named DLL (Dynamic Link Library) file into memory if it's located in the same directory as the opened media file. These DLL files contain executable code which could allow an attacker to install malware on victims' computers by inserting malicious DLLs into the...