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Cybersecurity researchers have detailed an updated version of an advanced fingerprinting and redirection toolkit called  WoofLocker  that's engineered to conduct tech support scams. The sophisticated traffic redirection scheme was  first documented  by Malwarebytes in January 2020, leveraging JavaScript embedded in compromised websites to perform anti-bot and web traffic filtering checks to serve next-stage JavaScript that redirects users to a browser locker (aka browlock). This redirection mechanism, in turn, makes use of steganographic tricks to conceal the JavaScript code within a PNG image that's served only when the validation phase is successful. Should a user be detected as a bot or not interesting traffic, a decoy PNG file without the malicious code is delivered. WoofLocker is also known as 404Browlock due to the fact that visiting the browlock URL directly without the appropriate redirection or one-time session token results in a 404 error page. The cyb...

Networking hardware company Juniper Networks has released an "out-of-cycle" security update to address multiple flaws in the J-Web component of Junos OS that could be combined to achieve remote code execution on susceptible installations. The four vulnerabilities have a cumulative CVSS rating of 9.8, making them Critical in severity. They affect all versions of Junos OS on SRX and EX Series. "By chaining exploitation of these vulnerabilities, an unauthenticated, network-based attacker may be able to remotely execute code on the devices," the company  said  in an advisory released on August 17, 2023. The J-Web interface allows users to configure, manage, and monitor Junos OS devices. A brief description of the flaws is as follows - CVE-2023-36844  and  CVE-2023-36845  (CVSS scores: 5.3) - Two PHP external variable modification vulnerabilities in J-Web of Juniper Networks Junos OS on EX Series and SRX Series allows an unauthenticated, network-based attacker...

Threat actors are using Android Package (APK) files with unknown or unsupported compression methods to elude malware analysis. That's according to findings from Zimperium, which found 3,300 artifacts leveraging such compression algorithms in the wild. 71 of the identified samples can be loaded on the operating system without any problems. There is no evidence that the apps were available on the Google Play Store at any point in time, indicating that the apps were distributed through other means, typically via untrusted app stores or social engineering to trick the victims into sideloading them. The APK files use "a technique that limits the possibility of decompiling the application for a large number of tools, reducing the possibilities of being analyzed," security researcher Fernando Ortega  said . "In order to do that, the APK (which is in essence a ZIP file), is using an unsupported decompression method." The advantage of such an approach is its abilit...

A coordinated law enforcement operation across 25 African countries has led to the arrest of 14 suspected cybercriminals, INTERPOL  announced  Friday. The exercise, conducted in partnership with AFRIPOL, enabled investigators to identify 20,674 cyber networks that were linked to financial losses of more than $40 million. "The four-month Africa Cyber Surge II operation was launched in April 2023 and focused on identifying cybercriminals and compromised infrastructure," the agency said. As part of the operation, three suspects were arrested in Cameroon in connection with an online scam involving the fraudulent sale of works of art worth $850,000. Another suspect was arrested in Nigeria for defrauding a Gambian victim. Also arrested were two money mules linked to scams initiated through messaging platforms. The cyber networks comprised 3,786 command-and-control (C2) servers, 14,134 victim IP addresses tied to data stealer infections, 1,415 phishing links and domains, 939 ...

While IT security managers in companies and public administrations rely on the concept of Zero Trust, APTS (Advanced Persistent Threats) are putting its practical effectiveness to the test. Analysts, on the other hand, understand that Zero Trust can only be achieved with comprehensive insight into one's own network.  Just recently, an attack believed to be perpetrated by the Chinese hacker group  Storm-0558  targeted several government agencies. They used fake digital authentication tokens to access webmail accounts running on Microsoft's Outlook service. In this incident, the attackers stole a signing key from Microsoft, enabling them to issue functional access tokens for Outlook Web Access (OWA) and Outlook.com and to download emails and attachments. Due to a plausibility check error, the digital signature, which was only intended for private customer accounts (MSA), also worked in the Azure Active Directory for business customers.  Embracing the Zero Trust Revo...

A new "mass-spreading" social engineering campaign is targeting users of the Zimbra Collaboration email server with an aim to collect their login credentials for use in follow-on operations. The activity, active since April 2023 and still ongoing, targets a wide range of small and medium businesses and governmental entities, most of which are located in Poland, Ecuador, Mexico, Italy, and Russia. It has not been attributed to any known threat actor or group. "Initially, the target receives an email with a phishing page in the attached HTML file," ESET researcher Viktor Šperka  said  in a report. "The email warns the target about an email server update, account deactivation, or similar issue and directs the user to click on the attached file." The messages also spoof the from address to appear as if they are coming from a Zimbra administrator in a likely attempt to convince the recipients into opening the attachment. The HTML file contains a Zimbra lo...

Microsoft on Thursday disclosed that it found a new version of the  BlackCat  ransomware (aka ALPHV and Noberus) that embeds tools like Impacket and RemCom to facilitate lateral movement and remote code execution. "The  Impacket tool  has credential dumping and remote service execution modules that could be used for broad deployment of the BlackCat ransomware in target environments," the company's threat intelligence team  said  in a series of posts on X (formerly Twitter). "This BlackCat version also has the  RemCom hacktool  embedded in the executable for remote code execution. The file also contains hardcoded compromised target credentials that actors use for lateral movement and further ransomware deployment." RemCom, billed as an open-source alternative to PsExec, has been put to use by Chinese and Iranian nation-state threat actors like  Dalbit  and  Chafer  (aka Remix Kitten) to move across the victim environments in...

Google has announced plans to add a new feature in the upcoming version of its Chrome web browser to proactively alert users when an extension they have installed has been removed from the Chrome Web Store. The feature, set for release alongside Chrome 117, allows users to be notified when an add-on has been unpublished by a developer, taken down for violating Chrome Web Store policy, or marked as malware. The tech giant said it intends to highlight such extensions under a "Safety check" category in the "Privacy and security" section of the browser settings page. "When a user clicks 'Review,' they will be taken to their extensions and given the choice to either remove the extension or hide the warning if they wish to keep the extension installed," Oliver Dunk, a developer relations engineer for Chrome extensions,  said . "As in previous versions of Chrome, extensions marked as malware are automatically disabled." The development co...

A previously undetected attack method called  NoFilter  has been found to abuse the Windows Filtering Platform ( WFP ) to achieve privilege escalation in the Windows operating system. "If an attacker has the ability to execute code with admin privilege and the target is to perform  LSASS Shtinkering , these privileges are not enough," Ron Ben Yizhak, a security researcher at Deep Instinct, told The Hacker News. "Running as "NT AUTHORITY\SYSTEM" is required. The techniques described in this research can escalate from admin to SYSTEM." The  findings  were presented at the DEF CON security conference over the weekend. The starting point of the  research  is an in-house tool called RPC Mapper the cybersecurity company used to map remote procedure call ( RPC ) methods, specifically those that invoke  WinAPI , leading to the discovery of a method named "BfeRpcOpenToken," which is part of WFP. WFP is a  set of API and system services  th...

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...

Cybersecurity researchers have documented a novel post-exploit persistence technique on iOS 16 that could be abused to fly under the radar and maintain access to an Apple device even when the victim believes it is offline. The method "tricks the victim into thinking their device's Airplane Mode works when in reality the attacker (following successful device exploit) has planted an artificial Airplane Mode which edits the UI to display Airplane Mode icon and cuts internet connection to all apps except the attacker application," Jamf Threat Labs researchers Hu Ke and Nir Avraham said in a report shared with The Hacker News. Airplane Mode , as the name implies, allows users to turn off wireless features in their devices, effectively preventing them from connecting to Wi-Fi networks, cellular data, and Bluetooth as well as sending or receiving calls and text messages. The approach devised by Jamf, in a nutshell, provides an illusion to the user that the Airplane Mode is...

A new, financially motivated operation dubbed  LABRAT  has been observed weaponizing a now-patched critical flaw in GitLab as part of a cryptojacking and proxyjacking campaign. "The attacker utilized undetected signature-based tools, sophisticated and stealthy cross-platform malware, command-and-control (C2) tools which bypassed firewalls, and kernel-based rootkits to hide their presence," Sysdig  said  in a report shared with The Hacker News. "Furthermore, the attacker abused a legitimate service,  TryCloudflare , to obfuscate their C2 network." Proxyjacking  allows the attacker to rent the compromised host out to a proxy network, making it possible to monetize the unused bandwidth. Cryptojacking, on the other hand, refers to the abuse of the system resources to mine cryptocurrency. A notable aspect of the campaign is the use of compiled binaries written in Go and .NET to fly under the radar, with LABRAT also providing backdoor access to the infected ...