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Mysterious Avatar rootkit with API, SDK, and Yahoo Groups for C&C communication

Mysterious Avatar rootkit with API, SDK, and Yahoo Groups for C&C communication

May 02, 2013
Early 2012 ESET company a mysterious malware, dubbed the Avatar rootkit (Win32/Rootkit.Avatar), advertised in the underground forums by Russian cyber crime . " We present you here previously announced product. In connection with work on other projects, we moved the release date for the public from May to February 2013th 2012go.Now nuclear rootkit AVATAR is available for rental. " Despite the malware was described months ago it was not found and published until now, in March ESET researchers detected two droppers with different C&C servers and having different compilation time stamps as showed in the following pictures: The Avatar rootkit appears very sophisticated, it uses two different infection techniques, the first in the dropper so as to bypass detections by HIPS, and the second one in the rootkit driver to allow the malware to be alive after system reboot, the instance detected works only on x86 systems. The 2 level dropper for Avatar rootkit works in conjunct
Cybersecurity Researchers Spotted First-Ever UEFI Rootkit in the Wild

Cybersecurity Researchers Spotted First-Ever UEFI Rootkit in the Wild

Sep 27, 2018
Cybersecurity researchers at ESET have unveiled what they claim to be the first-ever UEFI rootkit being used in the wild, allowing hackers to implant persistent malware on the targeted computers that could survive a complete hard-drive wipe. Dubbed LoJax , the UEFI rootkit is part of a malware campaign conducted by the infamous Sednit group, also known as APT28, Fancy Bear , Strontium , and Sofacy , to target several government organizations in the Balkans as well as in Central and Eastern Europe. Operating since at least 2007, Sednit group is a state-sponsored hacking group believed to be a unit of GRU (General Staff Main Intelligence Directorate), a Russian secret military intelligence agency. The hacking group has been associated with a number of high profile attacks, including the DNC hack just before the U.S. 2016 presidential election . UEFI, or Unified Extensible Firmware Interface, a replacement for the traditional BIOS, is a core and critical firmware component of a
New GPU-based Linux Rootkit and Keylogger with Excellent Stealth and Computing Power

New GPU-based Linux Rootkit and Keylogger with Excellent Stealth and Computing Power

May 09, 2015
The world of hacking has become more organized and reliable over recent years and so the techniques of hackers. Nowadays, attackers use highly sophisticated tactics and often go to extraordinary lengths in order to mount an attack. And there is something new to the list: A team of developers has created not one, but two pieces of malware that run on an infected computer's graphics processor unit (GPU) instead of its central processor unit (CPU), in order to enhance their stealthiness and computational efficiency. The two pieces of malware: Jellyfish Rootkit for Linux operating system Demon Keylogger The source code of both the Jellyfish Rootkit and the Demon keylogger, which are described as proof-of-concepts malware, have been published on Github. Until now, security researchers have discovered nasty malware running on the CPU and exploiting the GPU capabilities in an attempt to mine cryptocurrencies such as Bitcoins. However, these two malware co
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What's the Right EDR for You?

What's the Right EDR for You?

May 10, 2024Endpoint Security / Threat Detection
A guide to finding the right endpoint detection and response (EDR) solution for your business' unique needs. Cybersecurity has become an ongoing battle between hackers and small- and mid-sized businesses. Though perimeter security measures like antivirus and firewalls have traditionally served as the frontlines of defense, the battleground has shifted to endpoints. This is why endpoint detection and response (EDR) solutions now serve as critical weapons in the fight, empowering you and your organization to detect known and unknown threats, respond to them quickly, and extend the cybersecurity fight across all phases of an attack.  With the growing need to defend your devices from today's cyber threats, however, choosing the right EDR solution can be a daunting task. There are so many options and features to choose from, and not all EDR solutions are made with everyday businesses and IT teams in mind. So how do you pick the best solution for your needs? Why EDR Is a Must Because of
Reptile Rootkit: Advanced Linux Malware Targeting South Korean Systems

Reptile Rootkit: Advanced Linux Malware Targeting South Korean Systems

Aug 05, 2023 Linux / Malware
Threat actors are using an open-source rootkit called  Reptile  to target Linux systems in South Korea. "Unlike other rootkit malware that typically only provide concealment capabilities, Reptile goes a step further by offering a reverse shell, allowing threat actors to easily take control of systems," the AhnLab Security Emergency Response Center (ASEC)  said  in a report published this week. "Port knocking is a method where the malware opens a specific port on an infected system and goes on standby. When the threat actor sends a magic packet to the system, the received packet is used as a basis to establish a connection with the C&C server." A rootkit is a malicious software program that's designed to provide privileged, root-level access to a machine while concealing its presence. At least four different campaigns have leveraged Reptile since 2022. The first use of the rootkit was  recorded  by Trend Micro in May 2022 in connection with an intrusion
Stuxnet's Son "Duqu" Removal Tool released by Bitdefender

Stuxnet's Son "Duqu" Removal Tool released by Bitdefender

Oct 21, 2011
Stuxnet's Son " Duqu " Removal Tool released by Bitdefender Rootkit.Duqu is a new e-threat that combines the technology of the military-grade Stuxnet with an advanced keylogger and backdoor application. Due to its rootkit technology, the piece of malware can stay hidden from the user, the operating system's defense mechanism and even from regular antivirus utilities.Just like its predecessor – the Stuxnet rootkit - Rootkit.Duqu.A is digitally signed with a stolen digital certificate that has been revoked in the meantime. This allows it to install itself on both 32- and 64-bit operating systems on Windows platforms ranging from Windows XP to Windows 7. The Duqu rootkit runs on the computer for 36 days and collects any kind of information entered via the keyboard, including passwords, e-mail or IM conversations. After the "surveillance" period ends, the rootkit gracefully removes itself from the system, along with the keylogger component. Rootkit malware is extremely diff
Experts Uncover New 'CosmicStrand' UEFI Firmware Rootkit Used by Chinese Hackers

Experts Uncover New 'CosmicStrand' UEFI Firmware Rootkit Used by Chinese Hackers

Jul 25, 2022
An unknown Chinese-speaking threat actor has been attributed to a new kind of sophisticated Unified Extensible Firmware Interface ( UEFI ) firmware rootkit called  CosmicStrand . "The rootkit is located in the firmware images of Gigabyte or ASUS motherboards, and we noticed that all these images are related to designs using the H81 chipset," Kaspersky researchers  said  in a new report published today. "This suggests that a common vulnerability may exist that allowed the attackers to inject their rootkit into the firmware's image." Victims identified are said to be private individuals located in China, Vietnam, Iran, and Russia, with no discernible ties to any organization or industry vertical. Rootkits, which are malware implants that are capable of embedding themselves in the deepest layers of the operating system, have morphed from a rarity to an increasingly common occurrence in the threat landscape, equipping threat actors with stealth and persistence f
Rogue npm Package Deploys Open-Source Rootkit in New Supply Chain Attack

Rogue npm Package Deploys Open-Source Rootkit in New Supply Chain Attack

Oct 04, 2023 Supply Chain / Malware
A new deceptive package hidden within the npm package registry has been uncovered deploying an open-source rootkit called r77 , marking the first time a rogue package has delivered rootkit functionality. The package in question is  node-hide-console-windows , which mimics the legitimate npm package  node-hide-console-window  in what's an instance of a typosquatting campaign. It was  downloaded 704 times  over the past two months before it was taken down. ReversingLabs, which  first detected  the activity in August 2023, said the package "downloaded a Discord bot that facilitated the planting of an open-source rootkit, r77," adding it "suggests that open-source projects may increasingly be seen as an avenue by which to distribute malware." The malicious code, per the software supply chain security firm, is contained within the package's index.js file that, upon execution, fetches an executable that's automatically run. The executable in question is
New iLOBleed Rootkit Targeting HP Enterprise Servers with Data Wiping Attacks

New iLOBleed Rootkit Targeting HP Enterprise Servers with Data Wiping Attacks

Dec 30, 2022
A previously unknown rootkit has been found setting its sights on Hewlett-Packard Enterprise's Integrated Lights-Out ( iLO ) server management technology to carry out in-the-wild attacks that tamper with the firmware modules and completely wipe data off the infected systems. The discovery, which is the first instance of real-world malware in iLO firmware, was documented by Iranian cybersecurity firm Amnpardaz this week. "There are numerous aspects of iLO that make it an ideal utopia for malware and APT groups: Extremely high privileges (above any level of access in the operating system), very low-level access to the hardware, being totally out of the sight of the admins, and security tools, the general lack of knowledge and tools for inspecting iLO and/or protecting it, the persistence it provides for the malware to remain even after changing the operating system, and in particular being always running and never shutting down," the researchers  said . Besides managin
Researchers Discover Microsoft-Signed FiveSys Rootkit in the Wild

Researchers Discover Microsoft-Signed FiveSys Rootkit in the Wild

Oct 22, 2021
A newly identified rootkit has been found with a valid digital signature issued by Microsoft that's used to proxy traffic to internet addresses of interest to the attackers for over a year targeting online gamers in China. Bucharest-headquartered cybersecurity technology company Bitdefender named the malware " FiveSys ," calling out its possible credential theft and in-game-purchase hijacking motives. The Windows maker has since revoked the signature following responsible disclosure. "Digital signatures are a way of establishing trust," Bitdefender researchers said in a white paper, adding "a valid digital signature helps the attacker navigate around the operating system's restrictions on loading third-party modules into the kernel. Once loaded, the rootkit allows its creators to gain virtually unlimited privileges." Rootkits are both evasive and stealthy as they offer threat actors an entrenched foothold onto victims' systems and conceal
New Syslogk Linux Rootkit Lets Attackers Remotely Command It Using "Magic Packets"

New Syslogk Linux Rootkit Lets Attackers Remotely Command It Using "Magic Packets"

Jun 14, 2022
A new covert Linux kernel rootkit named  Syslogk  has been spotted under development in the wild and cloaking a malicious payload that can be remotely commandeered by an adversary using a  magic network traffic packet . "The Syslogk rootkit is heavily based on Adore-Ng but incorporates new functionalities making the user-mode application and the kernel rootkit hard to detect," Avast security researchers David Álvarez and Jan Neduchal  said  in a report published Monday. Adore-Ng, an  open-source rootkit  available since 2004, equips the attacker with full control over a compromised system. It also facilitates hiding processes as well as custom malicious artifacts, files, and even the kernel module, making it harder to detect. "The module starts by hooking itself into various file systems. It digs up the inode for the root filesystem, and replaces that inode's  readdir()  function pointer with one of its own," LWN.net  noted  at the time. "The Adore ver
Yahoo Email Spying Scandal — Here's Everything that has Happened So Far

Yahoo Email Spying Scandal — Here's Everything that has Happened So Far

Oct 08, 2016
Today Yahoo! is all over the Internet, but in a way the company would never have expected. It all started days ago when Reuters cited some anonymous sources and reported that Yahoo built a secret software to scan the emails of hundreds of millions of its users at the request of a U.S. intelligence service. At this point, we were not much clear about the intelligence agency: the National Security Agency or the FBI? The news outlet then reported that the company installed the software at the behest of Foreign Intelligence Surveillance Act (FISA) court order. Following the report, the New York Times reported that Yahoo used its system developed to scan for child p*rnography and spam to search for emails containing an undisclosed digital "signature" of a certain method of communication employed by a state-sponsored terrorist organization. Although Yahoo denied the reports, saying they are "misleading," a series of anonymous sources, therefore, unaccounta
Researchers Warn of Facefish Backdoor Spreading Linux Rootkits

Researchers Warn of Facefish Backdoor Spreading Linux Rootkits

May 28, 2021
Cybersecurity researchers have disclosed a new backdoor program capable of stealing user login credentials, device information and executing arbitrary commands on Linux systems. The malware dropper has been dubbed " Facefish " by Qihoo 360 NETLAB team owing its capabilities to deliver different rootkits at different times and the use of  Blowfish  cipher to encrypt communications to the attacker-controlled server. "Facefish consists of 2 parts, Dropper and Rootkit, and its main function is determined by the Rootkit module, which works at the  Ring 3  layer and is loaded using the  LD_PRELOAD  feature to steal user login credentials by hooking ssh/sshd program related functions, and it also supports some backdoor functions," the researchers  said . The NETLAB research builds on a previous analysis  published  by Juniper Networks on April 26, which documented an attack chain targeting Control Web Panel (CWP, formerly CentOS Web Panel) to inject an SSH implant wit
Hacking Team Spyware preloaded with UEFI BIOS Rootkit to Hide Itself

Hacking Team Spyware preloaded with UEFI BIOS Rootkit to Hide Itself

Jul 14, 2015
Last Week someone just hacked the infamous Hacking Team , The Italy-based cyber weapons manufacturer and leaked a huge trove of 400GB internal data , including: Emails Hacking tools Zero-day exploits Surveillance tools Source code for Spyware A spreadsheet listing every government client with date of purchase and amount paid Hacking Team is known for its advanced and sophisticated Remote Control System (RCS) spyware , also known as Galileo , which is loaded with lots of zero-day exploits and have ability to monitor the computers of its targets remotely. Today, Trend Micro security researchers found that the Hacking Team " uses a UEFI  (Unified Extensible Firmware Interface)  BIOS Rootkit to keep their Remote Control System (RCS) agent installed in their targets' systems ." That clearly means, even if the user reinstalls the Operating System, formats the hard disk, and even buys a new hard disk, the agents are implanted after Microsoft Windows is
ZeuS Botnet Updating Infected Systems with Rootkit-Equipped Trojan

ZeuS Botnet Updating Infected Systems with Rootkit-Equipped Trojan

Apr 21, 2014
ZeuS , or Zbot is one of the oldest families of financial malware , it is a Trojan horse capable to carry out various malicious and criminal tasks and is often used to steal banking information. It is distributed to a wide audience, primarily through infected web pages, spam campaigns and drive-by downloads. Earlier this month, Comodo AV labs identified a dangerous variant of ZeuS Banking Trojan which is signed by stolen Digital Certificate belonging to Microsoft Developer to avoid detection from Web browsers and anti-virus systems.  FREE! FREE! ZeuS BRINGS ROOTKIT UPDATE Recently, the security researcher, Kan Chen at Fortinet has found that P2P Zeus botnet is updating its bots/infected systems with updates version that has the capability to drop a rootkit into infected systems and hides the trojan to prevent the removal of malicious files and registry entries. The new variant also double check for the earlier installed version (0x38) of ZeuS trojan on the infecte
Android Clickjacking Rootkit Demonstrated

Android Clickjacking Rootkit Demonstrated

Jul 04, 2012
Android Clickjacking Rootkit Demonstrated Mobile security researchers have identified an aspect of Android 4.0.4 (Ice Cream Sandwich) and earlier models that clickjacking rootkits could exploit. Researchers at NC State in the US have developed a proof-of-concept prototype rootkit that attacks the Android framework and could be used to steal personal information. What is clickjacking? It is a malicious technique that tricks users and is often used to take over computers, web cams, or snag confidential info that is revealed by users who thinks they are on an innocent webpage. Like most Android malware, the rootkit can be distributed as a malicious app, opening up a host of potential vulnerabilities on any device on which it is installed. However, it functions in a different way. The rootkit, which could be bundled with an app and is said to be undetectable by anti-virus packages, would allow an attacker to replace a smartphone's browser with a version that logs key strokes to cap
Chinese Hackers Deploy Microsoft-Signed Rootkit to Target Gaming Sector

Chinese Hackers Deploy Microsoft-Signed Rootkit to Target Gaming Sector

Jul 12, 2023 Cyber Threat / Gaming
Cybersecurity researchers have unearthed a novel rootkit signed by Microsoft that's engineered to communicate with an actor-controlled attack infrastructure. Trend Micro has attributed the activity cluster to the same actor that was previously identified as behind the  FiveSys rootkit , which came to light in October 2021. "This malicious actor originates from China and their main victims are the gaming sector in China," Trend Micro's Mahmoud Zohdy, Sherif Magdy, and Mohamed Fahmy  said . "Their malware seems to have passed through the Windows Hardware Quality Labs (WHQL) process for getting a valid signature." Multiple variants of the rootkit spanning eight different clusters have been discovered, with 75 such drivers signed using Microsoft's WHQL program in 2022 and 2023. Trend Micro's analysis of some of the samples has revealed the presence of debug messages in the source code, indicating that the operation is still in the development and te
Scranos: New Rapidly Evolving Rootkit-Enabled Spyware Discovered

Scranos: New Rapidly Evolving Rootkit-Enabled Spyware Discovered

Apr 16, 2019
A new powerful rootkit-enabled spyware operation has been discovered wherein hackers are distributing multifunctional malware disguised as cracked software or trojanized app posing as legitimate software like video players, drivers and even anti-virus products. While the rootkit malware—dubbed Scranos —which was first discovered late last year, still appears to be a work in progress, it is continuously evolving, testing new components and regularly making an improvement to old components, which makes it a significant threat. Scranos features a modular design that has already gained capabilities to steal login credentials and payment accounts from various popular services, exfiltrate browsing history and cookies, get YouTube subscribers, display ads, as well as download and execute any payload. According to a 48 page in-depth report Bitdefender shared with The Hacker News prior to its release, the malware gains persistence on infected machines by installing a digitally-signed
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