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Cybersecurity researchers claim to have discovered a previously undocumented backdoor specifically designed for Microsoft SQL servers that could allow a remote attacker to control an already compromised system stealthily. Dubbed Skip-2.0 , the backdoor malware is a post-exploitation tool that runs in the memory and lets remote attackers connect to any account on the server running MSSQL version 11 and version 12 by using a "magic password." What's more? The malware manages to remain undetected on the victim's MSSQL Server by disabling the compromised machine's logging functions, event publishing, and audit mechanisms every time the "magic password" is used. With these capabilities, an attacker can stealthily copy, modify, or delete the content stored in a database, the impact of which varies from application to application integrated with targeted servers. "This could be used, for example, to manipulate in-game currencies for financial gai...

Cybersecurity researchers have disclosed details of an ongoing phishing campaign that leverages recruiting- and job-themed lures to deliver a Windows-based backdoor named WARMCOOKIE. "WARMCOOKIE appears to be an initial backdoor tool used to scout out victim networks and deploy additional payloads," Elastic Security Labs researcher Daniel Stepanic said in a new analysis. "Each sample is compiled with a hard-coded [command-and-control] IP address and RC4 key." The backdoor comes with capabilities to fingerprint infected machines, capture screenshots, and drop more malicious programs. The company is tracking the activity under the name REF6127. The attack chains observed since late April involve the use of email messages purporting to be from recruitment firms like Hays, Michael Page, and PageGroup, urging recipients to click on an embedded link to view details about a job opportunity. Users who end up clicking on the link are then prompted to download a docume...

The China-nexus cyber espionage group tracked as UNC3886 has been observed targeting end-of-life MX Series routers from Juniper Networks as part of a campaign designed to deploy custom backdoors, highlighting their ability to focus on internal networking infrastructure. "The backdoors had varying custom capabilities, including active and passive backdoor functions, as well as an embedded script that disables logging mechanisms on the target device," Google-owned Mandiant said in a report shared with The Hacker News. The threat intelligence firm described the development as an evolution of the adversary's tradecraft, which has historically leveraged zero-day vulnerabilities in Fortinet, Ivanti, and VMware devices to breach networks of interest and establish persistence for remote access. First documented in September 2022, the hacking crew is assessed to be "highly adept" and capable of targeting edge devices and virtualization technologies with the ultima...

Cybersecurity researchers have discovered a new PHP-based backdoor called Glutton that has been put to use in cyber attacks targeting China, the United States, Cambodia, Pakistan, and South Africa. QiAnXin XLab, which discovered the malicious activity in late April 2024, attributed the previously unknown malware with moderate confidence to the prolific Chinese nation-state group tracked Winnti (aka APT41). "Interestingly, our investigation revealed that Glutton's creators deliberately targeted systems within the cybercrime market," the company said . "By poisoning operations, they aimed to turn the tools of cybercriminals against them – a classic 'no honor among thieves' scenario." Glutton is designed to harvest sensitive system information, drop an ELF backdoor component, and perform code injection against popular PHP frameworks like Baota (BT), ThinkPHP, Yii, and Laravel. The ELF malware also shares "near-complete similarity" with a know...

In the escalating battle between the Federal Bureau of Investigation (FBI) and Apple over iPhone encryption, former National Security Agency (NSA) contractor Edward Snowden and Google chief executive Sundar Pichai just sided with Apple's refusal to unlock iPhone . Yesterday, Apple CEO Tim Cook refused to comply with a federal court order to help the FBI unlock an iPhone owned by one of the terrorists in the mass shootings in San Bernardino , California, in December. Here's What the FBI is Demanding: The federal officials have asked Apple to make a less secure version of its iOS that can be used by the officials to brute force the 4-6 digits passcode on the dead shooter's iPhone without getting the device's data self-destructed. Cook called the court order a "chilling" demand that "would undermine the very freedoms and liberty our government is meant to protect." He argued that to help the FBI unlock the iPhone would basically ...

A newly discovered zombie network that exclusively targets Apple computers running Mac OS X across the globe has compromised roughly 17,000 machines so far, giving hackers backdoor access to infected computers, researchers at Russian antivirus firm Dr.Web warned. According to a survey of traffic conducted in September by researchers at Dr. Web, over 17,000 Macs globally are part of the Mac.BackDoor.iWorm botnet , which creates a backdoor on machines running OS X. Researchers say almost a quarter of iWorm botnet are located in the US. The most interesting thing to notice about this botnet is that it uses a special method of spreading via a search service of Reddit posts to a Minecraft server list subreddit to collect the IP addresses for its command and control (CnC) network. The user who had posted that subreddit data has now been shut down though the malware creators are likely to form another server list. " It is worth mentioning that in order to acquire a control server add...

Foreign affairs ministries in the Americas have been targeted by a Chinese state-sponsored actor named  Flea  as part of a recent campaign that spanned from late 2022 to early 2023. The cyber attacks, per Broadcom's Symantec, involved a new backdoor codenamed Graphican. Some of the other targets included a government finance department and a corporation that markets products in the Americas as well as one unspecified victim in an European country. "Flea used a large number of tools in this campaign," the company  said  in a report shared with The Hacker News, describing the threat actor as "large and well-resourced." "As well as the new Graphican backdoor, the attackers leveraged a variety of living-off-the-land tools, as well as tools that have been previously linked to Flea." Flea, also called APT15, BackdoorDiplomacy, ke3chang, Nylon Typhoon (formerly Nickel), Playful Taurus, Royal APT, and Vixen Panda, is an advanced persistent threat group tha...

The Chinese threat actor known as FamousSparrow has been linked to a cyber attack targeting a trade group in the United States and a research institute in Mexico to deliver its flagship backdoor SparrowDoor and ShadowPad. The activity, observed in July 2024, marks the first time the hacking crew has deployed ShadowPad , a malware widely shared by Chinese state-sponsored actors. "FamousSparrow deployed two previously undocumented versions of the SparrowDoor backdoor, one of them modular," ESET said in a report shared with The Hacker News. "Both versions constitute considerable progress over previous ones and implement parallelization of commands." FamousSparrow was first documented by the Slovak cybersecurity company in September 2021 in connection with a series of cyber attacks aimed at hotels, governments, engineering companies, and law firms with SparrowDoor, an implant exclusively used by the group. Since then, there have been reports of the adversarial...

Mandiant , a FireEye sister concern has been involved in researches related to cyber defense. In their recent findings, a backdoor malware named SYNful Knock identified as the one compromising the principles of Cisco routers with features such as... ...Having an everlasting effect, i.e. Serious Persistence. What?- The malicious program is implanted in the router illicitly through the device's firmware (regardless of the vendor). The goal is achieved by modifying the router's firmware image, which exists even after the device gets a reboot. How?- installing SYNful Knock in Cisco 1841 router, Cisco 2811 router, and Cisco 3825 router. Affected areas- 14 instances in 4 countries including India, Mexico, Ukraine, and the Philippines. Impact- the backdoor is backed up with such abilities that can compromise the availability of other hosts and access to sensitive data in an organization. " The theoretical nature of router-focused attacks created a minds...

It is no secret that cybercriminals are becoming dramatically more adept, innovative, and stealthy with each passing day. While new forms of cybercrime are on the rise, traditional activities seem to be shifting towards more clandestine techniques that involve the exploitation of standard system tools and protocols, which are not always monitored. The latest example of such attack is DNSMessenger – a new Remote Access Trojan (RAT) that uses DNS queries to conduct malicious PowerShell commands on compromised computers – a technique that makes the RAT difficult to detect onto targeted systems. The Trojan came to the attention of Cisco's Talos threat research group by a security researcher named Simpo, who highlighted a tweet that encoded text in a PowerShell script that said 'SourceFireSux.' SourceFire is one of Cisco's corporate security products. DNSMessenger Attack Is Completely Fileless Further analysis of the malware ultimately led Talos researchers to...

A new sophisticated and stealthy Apache backdoor meant to drive traffic to malicious websites serving Blackhole exploit kit widely has been detected by  Sucuri recently. Researchers claimed that this backdoor affecting hundreds of web servers right now. Dubbed Linux/Cdorked.A , one of the most sophisticated Apache backdoors we have seen so far. The backdoor leaves no traces of compromised hosts on the hard drive other than its modified httpd binary, thereby complicating forensics analysis. All of the information related to the backdoor is stored in shared memory.  The configuration is pushed by the attacker through obfuscated HTTP requests that aren't logged in normal Apache logs. The HTTP server is equipped with a reverse connect backdoor that can be triggered via a special HTTP GET request. This means that no command and control information is stored anywhere on the system. ESET researchers  analyzed the binary and ...

Cybersecurity researchers have uncovered a hardware backdoor within a particular model of MIFARE Classic contactless cards that could allow authentication with an unknown key and open hotel rooms and office doors. The attacks have been demonstrated against FM11RF08S, a new variant of MIFARE Classic that was released by Shanghai Fudan Microelectronics in 2020. "The FM11RF08S backdoor enables any entity with knowledge of it to compromise all user-defined keys on these cards, even when fully diversified, simply by accessing the card for a few minutes," Quarkslab researcher Philippe Teuwen said . The secret key is not only common to existing FM11RF08S cards, the investigation found that "the attacks could be executed instantaneously by an entity in a position to carry out a supply chain attack." Compounding matters further, a similar backdoor has been identified in the previous generation, FM11RF08, that's protected with another key. The backdoor has been obse...

A newly observed phishing campaign is leveraging the recently disclosed Follina security vulnerability to distribute a previously undocumented backdoor on Windows systems. "Rozena is a backdoor malware that is capable of injecting a remote shell connection back to the attacker's machine," Fortinet FortiGuard Labs researcher Cara Lin  said  in a report this week. Tracked as  CVE-2022-30190 , the now-patched Microsoft Windows Support Diagnostic Tool (MSDT) remote code execution vulnerability has come under heavy exploitation in recent weeks ever since it came to light in late May 2022. The starting point for the latest attack chain observed by Fortinet is a weaponized  Office document  that, when opened, connects to a  Discord CDN URL  to retrieve an HTML file (" index.htm ") that, in turn, invokes the diagnostic utility using a PowerShell command to download next-stage payloads from the same CDN attachment space. This includes the Rozena implant (...

A threat actor tracked as Polonium has been linked to over a dozen highly targeted attacks aimed at Israelian entities with seven different custom backdoors since at least September 2021. The intrusions were aimed at organizations in various verticals, such as engineering, information technology, law, communications, branding and marketing, media, insurance, and social services, cybersecurity firm ESET said. Polonium  is the chemical element-themed moniker given by Microsoft to a sophisticated operational group that's believed to be based in Lebanon and is known to exclusively strike Israeli targets. Activities undertaken by the group first came to light earlier this June when the Windows maker disclosed it suspended more than 20 malicious OneDrive accounts created by the adversary for command-and-control (C2) purposes. Core to the attacks has been the use of implants coined CreepyDrive and CreepyBox for their ability to exfiltrate sensitive data to actor-controlled OneDrive ...

Bad actors with suspected ties to China have been behind a wide-ranging cyberespionage campaign targeting military organizations in Southeast Asia for nearly two years, according to new research. Attributing the attacks to a threat actor dubbed " Naikon APT ," cybersecurity firm Bitdefender laid out the ever-changing tactics, techniques, and procedures adopted by the group, including weaving new backdoors named "Nebulae" and "RainyDay" into their data-stealing missions. The malicious activity is said to have been conducted between June 2019 and March 2021. "In the beginning of the operation the threat actors used Aria-Body loader and Nebulae as the first stage of the attack," the researchers  said . "Starting with September 2020, the threat actors included the RainyDay backdoor in their toolkit. The purpose of this operation was cyberespionage and data theft." Naikon (aka Override Panda, Lotus Panda, or Hellsing) has a track recor...

Refuting allegations that its anti-virus product helped Russian spies steal classified files from an NSA employee's laptop, Kaspersky Lab has released more findings that suggest the computer in question may have been infected with malware. Moscow-based cyber security firm Kaspersky Lab on Thursday published the results of its own internal investigation claiming the NSA worker who took classified documents home had a personal home computer overwhelmed with malware. According to the latest Kaspersky report, the telemetry data its antivirus collected from the NSA staffer's home computer contained large amounts of malware files which acted as a backdoor to the PC. The report also provided more details about the malicious backdoor that infected the NSA worker's computer when he installed a pirated version of Microsoft Office 2013 .ISO containing the Mokes backdoor, also known as Smoke Loader. Backdoor On NSA Worker's PC May Have Helped Other Hackers Steal Classi...

Do you own an Android smartphone? You could be one of those 700 Million users whose phone is secretly sending text messages to China every 72 hours. You heard that right. Over 700 Million Android smartphones contain a secret 'backdoor' that surreptitiously sends all your text messages, call log, contact list, location history, and app data to China every 72 hours. Security researchers from Kryptowire discovered the alleged backdoor hidden in the firmware of many budget Android smartphones sold in the United States, which covertly gathers data on phone owners and sends it to a Chinese server without users knowing. First reported on by the New York Times on Tuesday, the backdoored firmware software is developed by China-based company Shanghai AdUps Technology, which claims that its software runs updates for more than 700 Million devices worldwide. Infected Android Smartphone WorldWide Moreover, it is worth noting that AdUps provides its software to much larger ha...