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A previously undocumented "flexible" backdoor called  Kapeka  has been "sporadically" observed in cyber attacks targeting Eastern Europe, including Estonia and Ukraine, since at least mid-2022. The findings come from Finnish cybersecurity firm WithSecure, which attributed the malware to the Russia-linked advanced persistent threat (APT) group tracked as  Sandworm  (aka APT44 or Seashell Blizzard). Microsoft is tracking the same malware under the name KnuckleTouch. "The malware [...] is a flexible backdoor with all the necessary functionalities to serve as an early-stage toolkit for its operators, and also to provide long-term access to the victim estate," security researcher Mohammad Kazem Hassan Nejad  said . Kapeka comes fitted with a dropper that's designed to launch and execute a backdoor component on the infected host, after which it removes itself. The dropper is also responsible for setting up persistence for the backdoor either as a schedul

Cisco is warning about a global surge in brute-force attacks targeting various devices, including Virtual Private Network (VPN) services, web application authentication interfaces, and SSH services, since at least March 18, 2024. "These attacks all appear to be originating from TOR exit nodes and a range of other anonymizing tunnels and proxies," Cisco Talos  said . Successful attacks could pave the way for unauthorized network access, account lockouts, or denial-of-service conditions, the cybersecurity company added. The attacks, said to be broad and opportunistic, have been observed targeting the below devices - Cisco Secure Firewall VPN  Checkpoint VPN Fortinet VPN SonicWall VPN RD Web Services  Mikrotik  Draytek  Ubiquiti  Cisco Talos described the brute-forcing attempts as using both generic and valid usernames for specific organizations, with the attacks indiscriminately targeting a wide range of sectors across geographies. The source IP addresses for t

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The threat actor tracked as  TA558  has been observed leveraging steganography as an obfuscation technique to deliver a wide range of malware such as Agent Tesla, FormBook, Remcos RAT, LokiBot, GuLoader, Snake Keylogger, and XWorm, among others. "The group made extensive use of steganography by sending VBSs, PowerShell code, as well as RTF documents with an embedded exploit, inside images and text files," Russian cybersecurity company Positive Technologies  said  in a Monday report. The campaign has been codenamed SteganoAmor for its reliance on steganography and the choice of file names such as greatloverstory.vbs and easytolove.vbs. A majority of the attacks have targeted industrial, services, public, electric power, and construction sectors in Latin American countries, although companies located in Russia, Romania, and Turkey have also been singled out. The development comes as TA558 has also been spotted  deploying Venom RAT  via phishing attacks aimed at enterprise

Two individuals have been arrested in Australia and the U.S. in connection with an alleged scheme to develop and distribute a remote access trojan called Hive RAT (previously Firebird). The U.S. Justice Department (DoJ)  said  the malware "gave the malware purchasers control over victim computers and enabled them to access victims' private communications, their login credentials, and other personal information." A 24-year-old individual named Edmond Chakhmakhchyan (aka "Corruption") from Van Nuys in Los Angeles, California, was taken into custody after he was caught selling a license of Hive RAT to an undercover employee of a law enforcement agency. He has been charged with one count of conspiracy and one count of advertising a device as an interception device, each of which carries a penalty of five years in prison. Chakhmakhchyan pleaded not guilty and was ordered to stand trial on June 4, 2024. Court documents allege a partnership between the malware'

Cybersecurity researchers have discovered a "renewed" cyber espionage campaign targeting users in South Asia with the aim of delivering an Apple iOS spyware implant called  LightSpy . "The latest iteration of LightSpy, dubbed 'F_Warehouse,' boasts a modular framework with extensive spying features," the BlackBerry Threat Research and Intelligence Team  said  in a report published last week. There is evidence to suggest that the campaign may have targeted India based on  VirusTotal   submissions  from within its borders. First documented in 2020 by Trend Micro and Kaspersky,  LightSpy  refers to an advanced iOS backdoor that's distributed via watering hole attacks through compromised news sites. A subsequent analysis from ThreatFabric in October 2023  uncovered  infrastructure and functionality overlaps between the malware and DragonEgg, a fully-featured Android spyware attributed to the Chinese nation-state group APT41 (aka Winnti). The initial in

Palo Alto Networks has released hotfixes to address a maximum-severity security flaw impacting PAN-OS software that has come under active exploitation in the wild. Tracked as  CVE-2024-3400  (CVSS score: 10.0), the critical vulnerability is a case of command injection in the GlobalProtect feature that an unauthenticated attacker could weaponize to execute arbitrary code with root privileges on the firewall. Fixes for the shortcoming are available in the following versions - PAN-OS 10.2.9-h1 PAN-OS 11.0.4-h1, and PAN-OS 11.1.2-h3 Patches for other commonly deployed maintenance releases are expected to be released over the next few days. "This issue is applicable only to PAN-OS 10.2, PAN-OS 11.0, and PAN-OS 11.1 firewalls configured with GlobalProtect gateway or GlobalProtect portal (or both) and device telemetry enabled," the company  clarified  in its updated advisory. It also said that while Cloud NGFW firewalls are not impacted by CVE-2024-3400, specific PAN-OS

Threat actors have been exploiting the newly disclosed zero-day flaw in Palo Alto Networks PAN-OS software dating back to March 26, 2024, nearly three weeks before it came to light yesterday. The network security company's Unit 42 division is  tracking  the activity under the name  Operation MidnightEclipse , attributing it as the work of a single threat actor of unknown provenance. The security vulnerability, tracked as  CVE-2024-3400  (CVSS score: 10.0), is a command injection flaw that enables unauthenticated attackers to execute arbitrary code with root privileges on the firewall. It's worth noting that the issue is applicable only to PAN-OS 10.2, PAN-OS 11.0, and PAN-OS 11.1 firewall configurations that have GlobalProtect gateway and device telemetry enabled. Operation MidnightEclipse entails the exploitation of the flaw to create a cron job that runs every minute to fetch commands hosted on an external server ("172.233.228[

"Test files" associated with the  XZ Utils backdoor  have made their way to a Rust crate known as  liblzma-sys , new  findings  from Phylum reveal. liblzma-sys, which has been downloaded over 21,000 times to date, provides Rust developers with bindings to the liblzma implementation, an underlying library that is part of the  XZ Utils  data compression software. The impacted version in question is 0.3.2. "The current distribution (v0.3.2) on Crates.io contains the test files for XZ that contain the backdoor," Phylum  noted  in a GitHub issue raised on April 9, 2024. "The test files themselves are not included in either the .tar.gz nor the .zip tags  here on GitHub  and are only present in liblzma-sys_0.3.2.crate that is installed from Crates.io." Following responsible disclosure, the files in question ("tests/files/bad-3-corrupt_lzma2.xz" and "tests/files/good-large_compressed.lzma") have since been removed from liblzma-sys version

The Iranian threat actor known as MuddyWater has been attributed to a new command-and-control (C2) infrastructure called  DarkBeatC2 , becoming the latest such tool in its arsenal after  SimpleHarm ,  MuddyC3, PhonyC2 , and  MuddyC2Go . "While occasionally switching to a new remote administration tool or changing their C2 framework, MuddyWater's methods remain constant," Deep Instinct security researcher Simon Kenin  said  in a technical report published last week. MuddyWater, also called Boggy Serpens, Mango Sandstorm, and TA450, is assessed to be affiliated with Iran's Ministry of Intelligence and Security (MOIS). It's known to be active since at least 2017, orchestrating spear-phishing attacks that lead to the deployment of various legitimate Remote Monitoring and Management (RMM) solutions on compromised systems. Prior findings from Microsoft show that the group has ties with another Iranian threat activity cluster tracked as  Storm-1084  (aka DarkBit), with t

Cybersecurity researchers have discovered a credit card skimmer that's concealed within a fake  Meta Pixel tracker script  in an attempt to evade detection. Sucuri said that the malware is injected into websites through tools that allow for custom code, such as WordPress plugins like  Simple Custom CSS and JS  or the " Miscellaneous Scripts " section of the Magento admin panel. "Custom script editors are popular with bad actors because they allow for external third party (and malicious) JavaScript and can easily pretend to be benign by leveraging naming conventions that match popular scripts like Google Analytics or libraries like JQuery," security researcher Matt Morrow  said . The bogus Meta Pixel tracker script identified by the web security company contains similar elements as its legitimate counterpart, but a closer examination reveals the addition of JavaScript code that substitutes references to the domain "connect.facebook[.]net" with "

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) on Thursday issued an emergency directive (ED 24-02) urging federal agencies to hunt for signs of compromise and enact preventive measures following the recent compromise of Microsoft's systems that led to the theft of email correspondence with the company. The attack, which  came to light  earlier this year, has been attributed to a Russian nation-state group tracked as Midnight Blizzard (aka APT29 or Cozy Bear). Last month, Microsoft revealed that the adversary managed to access some of its source code repositories but noted that there is no evidence of a breach of customer-facing systems. The emergency directive, which was originally issued privately to federal agencies on April 2, was  first reported  on by CyberScoop two days later. "The threat actor is using information initially exfiltrated from the corporate email systems, including authentication details shared between Microsoft customers and Micros

A threat actor tracked as  TA547  has targeted dozens of German organizations with an information stealer called  Rhadamanthys  as part of an invoice-themed phishing campaign. "This is the first time researchers observed TA547 use Rhadamanthys, an information stealer that is used by multiple cybercriminal threat actors," Proofpoint  said . "Additionally, the actor appeared to use a PowerShell script that researchers suspect was generated by a large language model (LLM)." TA547 is a prolific, financially motivated threat actor that's known to be active since at least November 2017, using email phishing lures to deliver a variety of Android and Windows malware such as ZLoader, Gootkit, DanaBot, Ursnif, and even Adhubllka ransomware. In recent years, the group has  evolved  into an initial access broker (IAB) for ransomware attacks. It has also been observed employing geofencing tricks to restrict payloads to specific regions. The email messages observed as p

An active Android malware campaign dubbed eXotic Visit has been primarily targeting users in South Asia, particularly those in India and Pakistan, with malware distributed via dedicated websites and Google Play Store. Slovak cybersecurity firm said the activity, ongoing since November 2021, is not linked to any known threat actor or group. It's tracking the group behind the operation under the name  Virtual Invaders . "Downloaded apps provide legitimate functionality, but also include code from the open-source Android  XploitSPY RAT ," ESET security researcher Lukáš Štefanko  said  in a technical report released today. The campaign is said to be highly targeted in nature, with the apps available on Google Play having negligible number of installs ranging from zero to 45. The apps have since been taken down. The fake-but-functional apps primarily masquerade as messaging services like Alpha Chat, ChitChat, Defcom, Dink Messenger, Signal Lite, TalkU, WeTalk, Wicker Mes

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

Threat actors are now taking advantage of GitHub's search functionality to trick unsuspecting users looking for popular repositories into downloading spurious counterparts that serve malware. The latest assault on the open-source software supply chain involves concealing malicious code within Microsoft Visual Code project files that's designed to download next-stage payloads from a remote URL, Checkmarx  said  in a report shared with The Hacker News. "Attackers create malicious repositories with popular names and topics, using techniques like automated updates and fake stars to boost search rankings and deceive users," security researcher Yehuda Gelb said. The idea is to manipulate the search rankings in GitHub and bring threat actor-controlled repositories to the top when users filter and sort their results based on the most recent updates by consistently committing small changes to a file named "log," and increase the popularity via bogus stars added v

Microsoft has released security updates for the month of April 2024 to remediate a record  149 flaws , two of which have come under active exploitation in the wild. Of the 149 flaws, three are rated Critical, 142 are rated Important, three are rated Moderate, and one is rated Low in severity. The update is aside from  21 vulnerabilities  that the company addressed in its Chromium-based Edge browser following the release of the  March 2024 Patch Tuesday fixes . The two shortcomings that have come under active exploitation are below - CVE-2024-26234  (CVSS score: 6.7) - Proxy Driver Spoofing Vulnerability CVE-2024-29988  (CVSS score: 8.8) - SmartScreen Prompt Security Feature Bypass Vulnerability While Microsoft's own advisory provides no information about CVE-2024-26234, cybersecurity firm Sophos said it discovered in December 2023 a malicious executable ("Catalog.exe" or "Catalog Authentication Client Service") that's  signed  by a valid Microsoft Wi