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A new Google malvertising campaign is leveraging a cluster of domains mimicking a legitimate IP scanner software to deliver a previously unknown backdoor dubbed  MadMxShell . "The threat actor registered multiple look-alike domains using a typosquatting technique and leveraged Google Ads to push these domains to the top of search engine results targeting specific search keywords, thereby luring victims to visit these sites," Zscaler ThreatLabz researchers Roy Tay and Sudeep Singh  said . As many as 45 domains are said to have been registered between November 2023 and March 2024, with the sites masquerading as port scanning and IT management software such as Advanced IP Scanner, Angry IP Scanner, IP scanner PRTG, and ManageEngine. While this is  not the first time  threat actors are  banking  on  malvertising techniques  to serve malware via lookalike sites, the development marks the first time the delivery vehicle is being used to propagate a sophisticated Windows backdoo

Cybersecurity researchers have discovered a new Raspberry Robin campaign wave that has been propagating the malware through malicious Windows Script Files ( WSFs ) since March 2024. "Historically, Raspberry Robin was known to spread through removable media like USB drives, but over time its distributors have experimented with other initial infection vectors," HP Wolf Security researcher Patrick Schläpfer  said  in a report shared with The Hacker News. Raspberry Robin, also called QNAP worm, was  first spotted  in September 2021 that has since  evolved into a downloader  for various other payloads in recent years, such as SocGholish, Cobalt Strike, IcedID, BumbleBee, and TrueBot, and also serving as a precursor for ransomware. While the malware was initially distributed by means of USB devices containing LNK files that retrieved the payload from a compromised QNAP device, it has since  adopted other methods  such as social engineering and malvertising. It's attribute

Identities now transcend human boundaries. Within each line of code and every API call lies a non-human identity. These entities act as programmatic access keys, enabling authentication and facilitating interactions among systems and services, which are essential for every API call, database query, or storage account access. As we depend on multi-factor authentication and passwords to safeguard human identities, a pressing question arises: How do we guarantee the security and integrity of these non-human counterparts? How do we authenticate, authorize, and regulate access for entities devoid of life but crucial for the functioning of critical systems? Let's break it down. The challenge Imagine a cloud-native application as a bustling metropolis of tiny neighborhoods known as microservices, all neatly packed into containers. These microservices function akin to diligent worker bees, each diligently performing its designated task, be it processing data, verifying credentials, or

As SaaS applications dominate the business landscape, organizations need optimized network speed and robust security measures. Many of them have been turning to SASE, a product category that offers cloud-based network protection while enhancing network infrastructure performance. However, a new report: "Better Together: SASE and Enterprise Browser Extension for the SaaS-First Enterprise" ( Download here ), challenges SASE's ability to deliver comprehensive security against web-borne cyber threats on its own. From phishing attacks to malicious extensions and account takeovers, traditional network traffic analysis and security falls short. The report sheds light on these limitations and introduces the role of secure browser extensions as an essential component in a comprehensive security strategy. SASE Advantages and Limitations SASE takes on a dual role in addressing both infrastructure and security. However, while SASE offers clear advantages in security, it may not e

A new phishing campaign has been observed leveraging a novel loader malware to deliver an information stealer and keylogger called  Agent Tesla . Trustwave SpiderLabs said it identified a phishing email bearing this attack chain on March 8, 2024. The message masquerades as a bank payment notification, urging the user to open an archive file attachment. The archive ("Bank Handlowy w Warszawie - dowód wpłaty_pdf.tar.gz") conceals a malicious loader that activates the procedure to deploy Agent Tesla on the compromised host. "This loader then used obfuscation to evade detection and leveraged polymorphic behavior with complex decryption methods," security researcher Bernard Bautista  said  in a Tuesday analysis. "The loader also exhibited the capability to bypass antivirus defenses and retrieved its payload using specific URLs and user agents leveraging proxies to further obfuscate traffic." The tactic of embedding malware within seemingly benign files is

Cybersecurity researchers have discovered an updated variant of a stealer and malware loader called  BunnyLoader  that modularizes its various functions as well as allow it to evade detection. "BunnyLoader is dynamically developing malware with the capability to steal information, credentials and cryptocurrency, as well as deliver additional malware to its victims," Palo Alto Networks Unit 42  said  in a report published last week. The new version, dubbed BunnyLoader 3.0, was announced by its developer named Player (or Player_Bunny) on February 11, 2024, with rewritten modules for data theft, reduced payload size, and enhanced keylogging capabilities. BunnyLoader was  first documented  by Zscaler ThreatLabz in September 2023, describing it as a malware-as-a-service (MaaS) designed to harvest credentials and facilitate cryptocurrency theft. It was initially offered on a subscription basis for $250 per month. The malware has since undergone frequent updates that are aimed

Cybersecurity researchers have detected in the wild yet another variant of the Phobos ransomware family known as  Faust . Fortinet FortiGuard Labs, which detailed the latest iteration of the ransomware, said it's being propagated by means of an infection that delivers a Microsoft Excel document (.XLAM) containing a VBA script. "The attackers utilized the Gitea service to store several files encoded in Base64, each carrying a malicious binary," security researcher Cara Lin  said  in a technical report published last week. "When these files are injected into a system's memory, they initiate a file encryption attack." Faust is the latest addition to several ransomware variants from the Phobos family, including Eking, Eight, Elbie, Devos, and 8Base. It's worth noting that Faust was  previously documented  by Cisco Talos in November 2023. The cybersecurity firm described the variant as active since 2022 and "does not target specific industries or re

A new Go-based malware loader called  CherryLoader  has been discovered by threat hunters in the wild to deliver additional payloads onto compromised hosts for follow-on exploitation. Arctic Wolf Labs, which discovered the new attack tool in two recent intrusions, said the loader's icon and name masquerades as the legitimate CherryTree note-taking application to dupe potential victims into installing it. "CherryLoader was used to drop one of two privilege escalation tools,  PrintSpoofer  or  JuicyPotatoNG , which would then run a batch file to establish persistence on the victim device," researchers Hady Azzam, Christopher Prest, and Steven Campbell  said . In another novel twist, CherryLoader also packs modularized features that allow the threat actor to swap exploits without recompiling code. It's currently not known how the loader is distributed, but the attack chains examined by the cybersecurity firm show that CherryLoader ("cherrytree.exe") and i

Cybersecurity researchers have identified a "lightweight method" called  iShutdown  for reliably identifying signs of spyware on Apple iOS devices, including notorious threats like NSO Group's  Pegasus , QuaDream's  Reign , and Intellexa's  Predator .  Kaspersky, which analyzed a set of iPhones that were compromised with Pegasus, said the infections left traces in a file named "Shutdown.log," a text-based system log file available on all iOS devices and which records every reboot event alongside its environment characteristics. "Compared to more time-consuming acquisition methods like forensic device imaging or a full iOS backup, retrieving the Shutdown.log file is rather straightforward," security researcher Maher Yamout  said . "The log file is stored in a sysdiagnose (sysdiag) archive." The Russian cybersecurity firm said it identified entries in the log file that recorded instances where "sticky" processes, such as

A new Mirai-based botnet called  NoaBot  is being used by threat actors as part of a crypto mining campaign since the beginning of 2023. "The capabilities of the new botnet, NoaBot, include a wormable self-spreader and an SSH key backdoor to download and execute additional binaries or spread itself to new victims," Akamai security researcher Stiv Kupchik said in a report shared with The Hacker News. Mirai , which had its source code leaked in 2016, has been the progenitor of a number of botnets, the most recent being  InfectedSlurs , which is capable of mounting distributed denial-of-service (DDoS) attacks. There are indications that NoaBot could be linked to another botnet campaign involving a Rust-based malware family known as  P2PInfect , which recently received an update to target routers and IoT devices. This is based on the fact that threat actors have also experimented with dropping P2PInfect in place of NoaBot in recent attacks targeting SSH servers, indicating likely at

Threat hunters have unmasked the latest tricks adopted by a malware strain called  GuLoader  in an effort to make analysis more challenging. "While GuLoader's core functionality hasn't changed drastically over the past few years, these constant updates in their obfuscation techniques make analyzing GuLoader a time-consuming and resource-intensive process," Elastic Security Labs researcher Daniel Stepanic  said  in a report published this week. First spotted in late 2019, GuLoader (aka CloudEyE) is an advanced shellcode-based malware downloader that's used to distribute a wide range of payloads, such as information stealers, while incorporating a bevy of sophisticated anti-analysis techniques to dodge traditional security solutions. A  steady stream  of  open-source reporting  into the malware in recent months has revealed the threat actors behind it have continued to improve its ability to bypass existing or new security features alongside other implemented fe

In a rapidly evolving digital landscape, it's crucial to reevaluate how we secure web environments. Traditional antivirus-approach solutions have their merits, but they're reactive. A new report delves into the reasons for embracing proactive web security solutions, ensuring you stay ahead of emerging threats.  To learn more, download the full report  here . The New Paradigm If you've been relying on the old-style antivirus-based approach to website security up to now, then we could summarize why you need to update to the more proactive approach simply by saying — prevention is always preferable to cure. That's the overarching rationale for adopting a proactive web security solution, but let's break it down into a few more detailed reasons for updating to the newer and more effective proactive approach.  To be clear, we're not denying that an antivirus-approach solution is ideal for detecting and responding to threats, but there's no escaping the fact that it's limited

Phishing campaigns delivering malware families such as DarkGate and PikaBot are following the same tactics previously used in attacks leveraging the now-defunct QakBot trojan. "These include hijacked email threads as the initial infection, URLs with unique patterns that limit user access, and an infection chain nearly identical to what we have seen with QakBot delivery," Cofense  said  in a report shared with The Hacker News. "The malware families used also follow suit to what we would expect QakBot affiliates to use." QakBot, also called QBot and Pinkslipbot, was  shut down  as part of a coordinated law enforcement effort codenamed Operation Duck Hunt earlier this August. The use of DarkGate and PikaBot in these campaigns is not surprising as they can both act as conduits to deliver additional payloads to compromised hosts, making them both an attractive option for cybercriminals. PikaBot's parallels to QakBot were  previously highlighted  by Zscaler in its analysis of the malw

A new cyber attack campaign has been observed using spurious  MSIX  Windows app package files for popular software such as Google Chrome, Microsoft Edge, Brave, Grammarly, and Cisco Webex to distribute a novel malware loader dubbed  GHOSTPULSE . "MSIX is a Windows app package format that developers can leverage to package, distribute, and install their applications to Windows users," Elastic Security Labs researcher Joe Desimone  said  in a technical report published last week. "However, MSIX requires access to purchased or stolen code signing certificates making them viable to groups of above-average resources." Based on the installers used as lures, it's suspected that potential targets are  enticed  into downloading the MSIX packages through known techniques such as compromised websites, search engine optimization (SEO) poisoning, or malvertising. Launching the MSIX file opens a Windows prompting the users to click the Install button, doing so which res

Cybersecurity researchers have called attention to a new antivirus evasion technique that involves embedding a malicious Microsoft Word file into a PDF file. The sneaky method, dubbed  MalDoc in PDF  by JPCERT/CC, is said to have been employed in an in-the-wild attack in July 2023. "A file created with MalDoc in PDF can be opened in Word even though it has magic numbers and file structure of PDF," researchers Yuma Masubuchi and Kota Kino  said . "If the file has a configured macro, by opening it in Word, VBS runs and performs malicious behaviors." Such specially crafted files are called  polyglots  as they are a legitimate form of multiple different file types, in this case, both PDF and Word (DOC). This entails adding an MHT file created in Word and with a macro attached after the PDF file object. The end result is a valid PDF file that can also be opened in the Word application. Put differently; the PDF document embeds within itself a Word document with a VB

Cisco has rolled out security updates to address a critical flaw reported in the ClamAV open source antivirus engine that could lead to remote code execution on susceptible devices. Tracked as  CVE-2023-20032  (CVSS score: 9.8), the issue relates to a case of remote code execution residing in the HFS+ file parser component. The flaw affects versions 1.0.0 and earlier, 0.105.1 and earlier, and 0.103.7 and earlier. Google security engineer Simon Scannell has been credited with discovering and reporting the bug. "This vulnerability is due to a missing buffer size check that may result in a heap buffer overflow write," Cisco Talos  said  in an advisory. "An attacker could exploit this vulnerability by submitting a crafted HFS+ partition file to be scanned by ClamAV on an affected device." Successful exploitation of the weakness could enable an adversary to run arbitrary code with the same privileges as that of the ClamAV scanning process, or crash the process, resu