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EnemyBot Linux Botnet Now Exploits Web Server, Android and CMS Vulnerabilities

EnemyBot Linux Botnet Now Exploits Web Server, Android and CMS Vulnerabilities

May 30, 2022Ravie Lakshmanan
A nascent Linux-based botnet named Enemybot has expanded its capabilities to include recently disclosed security vulnerabilities in its arsenal to target web servers, Android devices, and content management systems (CMS). "The malware is rapidly adopting one-day vulnerabilities as part of its exploitation capabilities," AT&T Alien Labs  said  in a technical write-up published last week. "Services such as VMware Workspace ONE, Adobe ColdFusion, WordPress, PHP Scriptcase and more are being targeted as well as IoT and Android devices." First disclosed by  Securonix  in March and later by  Fortinet , Enemybot has been linked to a threat actor tracked as Keksec (aka Kek Security, Necro, and FreakOut), with early attacks targeting routers from Seowon Intech, D-Link, and iRZ. Enemybot, which is capable of carrying out  DDoS attacks , draws its origins from several other botnets like Mirai, Qbot, Zbot, Gafgyt, and LolFMe. An analysis of the latest variant reveals
The Myths of Ransomware Attacks and How To Mitigate Risk

The Myths of Ransomware Attacks and How To Mitigate Risk

May 27, 2022The Hacker News
Today's modern companies are built on data, which now resides across countless cloud apps. Therefore  preventing data loss  is essential to your success. This is especially critical for mitigating against rising ransomware attacks — a threat that  57% of security leaders expect to be compromised by within the next year .  As  organizations continue to evolve, in turn so does ransomware . To help you stay ahead, Lookout Chief Strategy Officer, Aaron Cockerill met with Microsoft Chief Security Advisor, Sarah Armstrong-Smith to discuss how  remote work  and the cloud have made it more difficult to spot a ransomware attack, as well as how deploying behavioral-anomaly-based detection can help mitigate ransomware risk.  Access the full interview .  Aaron Cockerill:  I feel like the way modern enterprises operate, which includes a combination of technologies, has allowed the ransomware to thrive. Having experienced this type of attack in my past roles, I know how many CISOs are feeling
Experts Warn of Rise in ChromeLoader Malware Hijacking Users' Browsers

Experts Warn of Rise in ChromeLoader Malware Hijacking Users' Browsers

May 26, 2022Ravie Lakshmanan
A malvertising threat is witnessing a new surge in activity since its emergence earlier this year. Dubbed ChromeLoader , the malware is a "pervasive and persistent browser hijacker that modifies its victims' browser settings and redirects user traffic to advertisement websites," Aedan Russell of Red Canary  said  in a new report. ChromeLoader is a rogue Chrome browser extension and is typically distributed in the form of ISO files via pay-per-install sites and baited social media posts that advertise QR codes to cracked video games and pirated movies. While it primarily functions by hijacking user search queries to Google, Yahoo, and Bing and redirecting traffic to an advertising site, it's also notable for its use of PowerShell to inject itself into the browser and get the extension added. The malware, also known as Choziosi Loader, was first documented by G DATA earlier this February. "For now the only purpose is getting revenue via unsolicited adverti
Researchers Find New Malware Attacks Targeting Russian Government Entities

Researchers Find New Malware Attacks Targeting Russian Government Entities

May 25, 2022Ravie Lakshmanan
An unknown advanced persistent threat (APT) group has been linked to a series of spear-phishing attacks targeting Russian government entities since the onset of the Russo-Ukrainian war in late February 2022. "The campaigns [...] are designed to implant a Remote Access Trojan (RAT) that can be used to surveil the computers it infects, and run commands on them remotely," Malwarebytes  said  in a technical report published Tuesday. The cybersecurity company attributed the attacks with low confidence to a Chinese hacking group, citing infrastructure overlaps between the RAT and Sakula Rat malware used by a threat actor known as  Deep Panda . The attack chains, while leveraging different lures over the course of two months, all employed the same malware barring small differences in the source code. The campaign is said to have commenced around February 26, days after Russia's military invasion of Ukraine, with the emails distributing the RAT under the guise of an interac
New Chaos Ransomware Builder Variant "Yashma" Discovered in the Wild

New Chaos Ransomware Builder Variant "Yashma" Discovered in the Wild

May 24, 2022Ravie Lakshmanan
Cybersecurity researchers have disclosed details of the latest version of the Chaos ransomware line, dubbed Yashma. "Though Chaos ransomware builder has only been in the wild for a year, Yashma claims to be the sixth version (v6.0) of this malware," BlackBerry research and intelligence team said in a report shared with The Hacker News. Chaos is a customizable ransomware builder that  emerged  in underground forums on June 9, 2021, by falsely marketing itself as the .NET version of Ryuk despite sharing no such overlaps with the notorious counterpart. The fact that it's offered for sale also means that any malicious actor can purchase the builder and develop their own ransomware strains, turning it into a potent threat. It has since undergone five successive iterations aimed at improving its functionalities: version 2.0 on June 17, version 3.0 on July 5, version 4.0 on August 5, and version 5.0 in early 2022. While the first three variants of Chaos functioned more l
Conti Ransomware Operation Shut Down After Splitting into Smaller Groups

Conti Ransomware Operation Shut Down After Splitting into Smaller Groups

May 24, 2022Ravie Lakshmanan
Even as the operators of Conti threatened to overthrow the Costa Rican government , the notorious cybercrime gang officially took down its attack infrastructure in favor of migrating their malicious cyber activities to other ancillary operations, including Karakurt and BlackByte. "From the negotiations site, chatrooms, messengers to servers and proxy hosts - the Conti brand, not the organization itself, is shutting down," AdvIntel researchers Yelisey Bogusalvskiy and Vitali Kremez  said  in a report. "However, this does not mean that the threat actors themselves are retiring." The voluntary termination, with the exception of its name-and-shame blog, is said to have occurred on May 19, 2022, while an organizational rejig was happening simultaneously to ensure a smooth transition of the ransomware group's members. AdvIntel said Conti, which is also tracked under the moniker  Gold Ulrick , orchestrated its own demise by utilizing information warfare techniques.
Fronton: Russian IoT Botnet Designed to Run Social Media Disinformation Campaigns

Fronton: Russian IoT Botnet Designed to Run Social Media Disinformation Campaigns

May 23, 2022Ravie Lakshmanan
Fronton, a distributed denial-of-service (DDoS) botnet that came to light in March 2020, is much more powerful than previously thought, per the latest research. "Fronton is a system developed for coordinated inauthentic behavior on a massive scale," threat intelligence firm Nisos said in a  report  published last week. "This system includes a web-based dashboard known as SANA that enables a user to formulate and deploy trending social media events en masse. The system creates these events that it refers to as Инфоповоды, 'newsbreaks,' utilizing the botnet as a geographically distributed transport." The existence of Fronton, an IoT botnet, became public knowledge following revelations from  BBC Russia  and  ZDNet  in March 2020 after a Russian hacker group known as Digital Revolution published documents that it claimed were obtained after breaking into a subcontractor to the FSB, the Federal Security Service of the Russian Federation. Further investigat
Microsoft Warns Rise in XorDdos Malware Targeting Linux Devices

Microsoft Warns Rise in XorDdos Malware Targeting Linux Devices

May 20, 2022Ravie Lakshmanan
A Linux botnet malware known as XorDdos has witnessed a 254% surge in activity over the last six months, according to latest research from Microsoft. The trojan, so named for carrying out denial-of-service attacks on Linux systems and its use of XOR-based encryption for communications with its command-and-control (C2) server, is  known  to have been  active  since at least 2014. "XorDdos' modular nature provides attackers with a versatile trojan capable of infecting a variety of Linux system architectures," Ratnesh Pandey, Yevgeny Kulakov, and Jonathan Bar Or of the Microsoft 365 Defender Research Team  said  in an exhaustive deep-dive of the malware. "Its SSH brute-force attacks are a relatively simple yet effective technique for gaining root access over a number of potential targets." Remote control over vulnerable IoT and other internet-connected devices is gained by means of secure shell (SSH) brute-force attacks, enabling the malware to form a botnet
Cytrox's Predator Spyware Targeted Android Users with Zero-Day Exploits

Cytrox's Predator Spyware Targeted Android Users with Zero-Day Exploits

May 20, 2022Ravie Lakshmanan
Google's Threat Analysis Group (TAG) on Thursday pointed fingers at a North Macedonian spyware developer named Cytrox for developing exploits against five zero-day (aka 0-day) flaws, four in Chrome and one in Android, to target Android users. "The 0-day exploits were used alongside n-day exploits as the developers took advantage of the time difference between when some critical bugs were patched but not flagged as security issues and when these patches were fully deployed across the Android ecosystem," TAG researchers Clement Lecigne and Christian Resell  said . Cytrox is alleged to have packaged the exploits and sold them to different government-backed actors located in Egypt, Armenia, Greece, Madagascar, Côte d'Ivoire, Serbia, Spain, and Indonesia, who, in turn, weaponized the bugs in at least three different campaigns. The commercial surveillance company is the maker of  Predator , an implant  analogous  to that of NSO Group's  Pegasus , and is known to hav
Hackers Exploiting VMware Horizon to Target South Korea with NukeSped Backdoor

Hackers Exploiting VMware Horizon to Target South Korea with NukeSped Backdoor

May 20, 2022Ravie Lakshmanan
The North Korea-backed Lazarus Group has been observed leveraging the  Log4Shell vulnerability  in VMware Horizon servers to deploy the NukeSped (aka Manuscrypt) implant against targets located in its southern counterpart. "The attacker used the Log4j vulnerability on VMware Horizon products that were not applied with the security patch," AhnLab Security Emergency Response Center (ASEC)  said  in a new report. The intrusions are said to have been first discovered in April, although  multiple threat actors , including those aligned with  China  and  Iran , have employed the same approach to further their objectives over the past few months. NukeSped is a backdoor that can perform various malicious activities based on commands received from a remote attacker-controlled domain. Last year, Kaspersky disclosed a spear-phishing campaign aimed at stealing critical data from defense companies using a NukeSped variant called  ThreatNeedle . Some of the key functions of the bac
Hackers Trick Users with Fake Windows 11 Downloads to Distribute Vidar Malware

Hackers Trick Users with Fake Windows 11 Downloads to Distribute Vidar Malware

May 19, 2022Ravie Lakshmanan
Fraudulent domains masquerading as Microsoft's Windows 11 download portal are attempting to trick users into deploying trojanized installation files to infect systems with the Vidar information stealer malware. "The spoofed sites were created to distribute malicious ISO files which lead to a Vidar info-stealer infection on the endpoint," Zscaler  said  in a report. "These variants of Vidar malware fetch the C2 configuration from attacker-controlled social media channels hosted on Telegram and Mastodon network." Some of the rogue distribution vector domains, which were registered last month on April 20, consist of ms-win11[.]com, win11-serv[.]com, and win11install[.]com, and ms-teams-app[.]net. In addition, the cybersecurity firm cautioned that the threat actor behind the impersonation campaign is also leveraging backdoored versions of Adobe Photoshop and other legitimate software such as Microsoft Teams to deliver Vidar malware. The ISO file, for its part,
QNAP Urges Users to Update NAS Devices to Prevent Deadbolt Ransomware Attacks

QNAP Urges Users to Update NAS Devices to Prevent Deadbolt Ransomware Attacks

May 19, 2022Ravie Lakshmanan
Taiwanese network-attached storage (NAS) devices maker QNAP on Thursday warned its customers of a fresh wave of DeadBolt ransomware attacks. The intrusions are said to have targeted TS-x51 series and TS-x53 series appliances running on QTS 4.3.6 and QTS 4.4.1, according to its product security incident response team.  "QNAP urges all NAS users to check and update QTS to the latest version as soon as possible, and avoid exposing their NAS to the internet," QNAP  said  in an advisory. This development marks the third time QNAP devices have come under assault from  DeadBolt ransomware  since the start of the year. In late January, as many as 4,988 DeadBolt-infected QNAP devices were identified, prompting the company to release a forced firmware update. A second uptick in new infections was  observed  in mid-March.  DeadBolt attacks are also notable for the fact that they allegedly leverage zero-day flaws in the software to gain remote access and encrypt the systems. A
How to Protect Your Data When Ransomware Strikes

How to Protect Your Data When Ransomware Strikes

May 18, 2022The Hacker News
Ransomware  is not a new attack vector. In fact, the  first malware of its kind  appeared more than 30 years ago and was distributed via 5.25-inch floppy disks. To pay the ransom, the victim had to mail money to a P.O. Box in Panama. Fast forward to today, affordable ransomware-as-a-service (RaaS) kits are available on the dark web for anyone to purchase and deploy and attackers have an infinite number of channels available to them to infiltrate organizations as a result of reliance on cloud and mobile technologies. Initiating a ransomware attack is all about discretely gaining access. And as employees can now access your data from anywhere, you have lost visibility into how they do so. To safeguard against these attacks, you're not just looking for malware, you need continuous insights into your users, the endpoints they use and the applications and data they access. Lookout , a leader in endpoint-to-cloud security, has published an interactive infographic to help you visualiz
Researchers Expose Inner Workings of Billion-Dollar Wizard Spider Cybercrime Gang

Researchers Expose Inner Workings of Billion-Dollar Wizard Spider Cybercrime Gang

May 18, 2022Ravie Lakshmanan
The inner workings of a cybercriminal group known as the Wizard Spider have been exposed, shedding light on its organizational structure and motivations. "Most of Wizard Spider's efforts go into hacking European and U.S. businesses, with a special cracking tool used by some of their attackers to breach high-value targets," Swiss cybersecurity company PRODAFT  said  in a new report shared with The Hacker News. "Some of the money they get is put back into the project to develop new tools and talent." Wizard Spider, also known as Gold Blackburn, is believed to operate out of Russia and refers to a financially motivated threat actor that's been linked to the TrickBot botnet, a modular malware that was  officially discontinued  earlier this year in favor of improved malware such as BazarBackdoor. That's not all. The TrickBot operators have also extensively cooperated with  Conti , another Russia-linked cybercrime group notorious for offering ransomware-a
Hackers Gain Fileless Persistence on Targeted SQL Servers Using a Built-in Utility

Hackers Gain Fileless Persistence on Targeted SQL Servers Using a Built-in Utility

May 18, 2022Ravie Lakshmanan
Microsoft on Tuesday warned that it recently spotted a malicious campaign targeting SQL Servers that leverages a built-in PowerShell binary to achieve persistence on compromised systems. The intrusions, which leverage brute-force attacks as an initial compromise vector, stand out for their use of the utility " sqlps.exe ," the tech giant  said  in a series of tweets. The ultimate goals of the campaign are unknown, as is the identity of the threat actor staging it. Microsoft is tracking the malware under the name " SuspSQLUsage ." The sqlps.exe utility, which comes by default with all versions of SQL Servers, enables an SQL Agent — a Windows service to run scheduled tasks — to run jobs using the PowerShell subsystem. "The attackers achieve fileless persistence by spawning the sqlps.exe utility, a PowerShell wrapper for running SQL-built cmdlets, to run recon commands and change the start mode of the SQL service to LocalSystem," Microsoft noted. Addi
Microsoft Warns of "Cryware" Info-Stealing Malware Targeting Crypto Wallets

Microsoft Warns of "Cryware" Info-Stealing Malware Targeting Crypto Wallets

May 18, 2022Ravie Lakshmanan
Microsoft is warning of an emerging threat targeting internet-connected cryptocurrency wallets, signaling a departure in the use of digital coins in cyberattacks. The tech giant dubbed the new threat "cryware," with the attacks resulting in the irreversible theft of virtual currencies by means of fraudulent transfers to an adversary-controlled wallet. "Cryware are information stealers that collect and exfiltrate data directly from non-custodial cryptocurrency wallets, also known as  hot wallets ," Berman Enconado and Laurie Kirk of the Microsoft 365 Defender Research Team  said  in a new report.  "Because hot wallets, unlike custodial wallets, are stored locally on a device and provide easier access to cryptographic keys needed to perform transactions, more and more threats are targeting them." Attacks of this kind are not theoretical. Earlier this year, Kaspersky  disclosed  a financially-motivated campaign staged by the North Korea-based Lazarus Gr
UpdateAgent Returns with New macOS Malware Dropper Written in Swift

UpdateAgent Returns with New macOS Malware Dropper Written in Swift

May 17, 2022Ravie Lakshmanan
A new variant of the macOS malware tracked as UpdateAgent has been spotted in the wild, indicating ongoing attempts on the part of its authors to upgrade its functionalities. "Perhaps one of the most identifiable features of the malware is that it relies on the AWS infrastructure to host its various payloads and perform its infection status updates to the server," researchers from Jamf Threat Labs  said  in a report. UpdateAgent, first detected in late 2020, has since  evolved  into a malware dropper, facilitating the distribution of second-stage payloads such as adware while also bypassing macOS  Gatekeeper  protections. The newly discovered Swift-based dropper masquerades as Mach-O binaries named " PDFCreator " and " ActiveDirectory " that, upon execution, establish a connection to a remote server and retrieve a bash script to be executed. "The primary difference [between the two executables] is that it reaches out to a different URL from wh
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