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The notorious ransomware operation known as REvil (aka Sodin or Sodinokibi) has resumed after six months of inactivity, an analysis of new ransomware samples has revealed. "Analysis of these samples indicates that the developer has access to REvil's source code, reinforcing the likelihood that the threat group has reemerged," researchers from Secureworks Counter Threat Unit (CTU)  said  in a report published Monday. "The identification of multiple samples with varying modifications in such a short period of time and the lack of an official new version indicates that REvil is under heavy active development once again." REvil, short for Ransomware Evil, is a ransomware-as-a-service (RaaS) scheme and attributed to a Russia-based/speaking group known as  Gold Southfield , arising just as  GandCrab  activity declined and the latter announced their retirement. It's also one of the earliest groups to adopt the double extortion scheme in which stolen data from...

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Cybersecurity researchers have dissected the inner workings of an information-stealing malware called Saintstealer that's designed to siphon credentials and system information. "After execution, the stealer extracts username, passwords, credit card details, etc.," Cyble researchers  said  in an analysis last week. "The stealer also steals data from various locations across the system and compresses it in a password-protected ZIP file." A 32-bit C# .NET-based executable with the name "saintgang.exe," Saintstealer is equipped with anti-analysis checks, opting to terminate itself if it's running either in a sandboxed or virtual environment. The malware can capture a wide range of information that ranges from taking screenshots to gathering passwords, cookies, and autofill data stored in Chromium-based browsers such as Google Chrome, Opera, Edge, Brave, Vivaldi, and Yandex, among others. It can also steal Discord multi-factor authentication toke...

Microsoft on Monday disclosed that it mitigated a security flaw affecting Azure Synapse and Azure Data Factory that, if successfully exploited, could result in remote code execution. The vulnerability, tracked as  CVE-2022-29972 , has been codenamed " SynLapse " by researchers from Orca Security, who reported the flaw to Microsoft in January 2022. "The vulnerability was specific to the third-party Open Database Connectivity ( ODBC ) driver used to connect to Amazon Redshift in Azure Synapse pipelines and Azure Data Factory Integration Runtime ( IR ) and did not impact Azure Synapse as a whole," the company  said . "The vulnerability could have allowed an attacker to perform remote command execution across IR infrastructure not limited to a single tenant." In other words, a malicious actor can weaponize the bug to acquire the Azure Data Factory service certificate and access another tenant's Integration Runtimes to gain access to sensitive informa...

The U.S. Department of Transportation's Pipeline and Hazardous Materials Safety Administration (PHMSA) has proposed a penalty of nearly $1 million to Colonial Pipeline for violating federal safety regulations, worsening the impact of the ransomware attack last year. The $986,400 penalty is the result of an inspection conducted by the regulator of the pipeline operator's control room management ( CRM ) procedures from January through November 2020. The PHMSA  said  that "a probable failure to adequately plan and prepare for manual shutdown and restart of its pipeline system [...] contributed to the national impacts when the pipeline remained out of service after the May 2021 cyberattack." Colonial Pipeline, operator of the largest U.S. fuel pipeline, was forced to temporarily take its systems offline in the wake of a  DarkSide ransomware attack  in early May 2021, disrupting gas supply and prompting a  regional emergency declaration  across 17 states. ...

The maintainers of the RubyGems package manager have addressed a critical security flaw that could have been abused to remove gems and replace them with rogue versions under specific circumstances. "Due to a bug in the yank action, it was possible for any RubyGems.org user to remove and replace certain gems even if that user was not authorized to do so," RubyGems  said  in a security advisory published on May 6, 2022. RubyGems, like npm for JavaScript and pip for Python, is a  package manager  and a gem hosting service for the Ruby programming language, offering a repository of more than 171,500 libraries. In a nutshell, the flaw in question, tracked as CVE-2022-29176, enabled anyone to pull certain gems and upload different files with the same name, same version number, and different platforms. For this to happen, however, a gem needed to have one or more dashes in its name, where the word before the dash was the name of an attacker-controlled gem, and which w...

Cybersecurity researchers have shed light on an actively maintained remote access trojan called DCRat (aka DarkCrystal RAT) that's offered on sale for "dirt cheap" prices, making it accessible to professional cybercriminal groups and novice actors alike. "Unlike the well-funded, massive Russian threat groups crafting custom malware [...], this remote access Trojan (RAT) appears to be the work of a lone actor, offering a surprisingly effective homemade tool for opening backdoors on a budget," BlackBerry researchers said in a report shared with The Hacker News. "In fact, this threat actor's commercial RAT sells at a fraction of the standard price such tools command on Russian underground forums." Written in .NET by an individual codenamed "boldenis44" and "crystalcoder," DCRat is a full-featured backdoor whose functionalities can be further augmented by third-party plugins developed by affiliates using a dedicated integrated ...

Unless you are living completely off the grid, you know the horrifying war in Ukraine and the related geopolitical tensions have dramatically increased cyberattacks and the threat of even more to come. The Cybersecurity and Infrastructure Security Agency (CISA) provides guidance to US federal agencies in their fight against cybercrime, and the agency's advice has proven so valuable that it's been widely adopted by commercial organizations too. In February, CISA responded to the current situation by issuing an unusual " SHIELDS UP! " warning and advisory. According to CISA, "Every organization—large and small—must be prepared to respond to disruptive cyber incidents." The announcement from CISA consisted of a range of recommendations to help organizations and individuals reduce the likelihood of a successful attack and limit damage in case the worst happens. It also contains general advice for C-level leaders, as well as a tip sheet on how to respond to r...

A new set of trojanized apps spread via the Google Play Store has been observed distributing the notorious Joker malware on compromised Android devices. Joker, a  repeat   offender , refers to a class of harmful apps that are used for billing and SMS fraud, while also performing a number of actions of a malicious hacker's choice, such as stealing text messages, contact lists, and device information. Despite continued attempts on the part of Google to scale up its defenses, the apps have been continually iterated to search for gaps and slip into the app store undetected. "They're usually spread on Google Play, where scammers download legitimate apps from the store, add malicious code to them and re-upload them to the store under a different name," Kaspersky researcher Igor Golovin  said  in a report published last week. The trojanized apps, taking the place of their removed counterparts, often appear as messaging, health tracking, and PDF scanner apps that, once...

The Computer Emergency Response Team of Ukraine (CERT-UA) has warned of phishing attacks that deploy an information-stealing malware called Jester Stealer on compromised systems. The mass email campaign carries the subject line "chemical attack" and contains a link to a macro-laced Microsoft Excel file, opening which leads to computers getting infected with Jester Stealer. The attack, which requires potential victims to enable macros after opening the document, works by downloading and executing an .EXE file that is retrieved from compromised web resources, CERT-UA detailed. Jester Stealer, as documented by Cyble in February 2022, comes with features to steal and transmit login credentials, cookies, and credit card information along with data from passwords managers, chat messengers, email clients, crypto wallets, and gaming apps to the attackers. It's purchasable for $99 per month or $249 for lifetime access. "The hackers get the stolen data via Telegram usi...

The U.S. State Department has  announced  rewards of up to $10 million for any information leading to the identification of key individuals who are part of the infamous Conti cybercrime gang. Additionally, it's offering another $5 million for intelligence information that could help arrest or convict individuals who are conspiring or attempting to affiliate with the group in a ransomware attack. The department called the Conti variant the "costliest strain of ransomware ever documented." Conti , the work of a Russia-based transnational organized crime group dubbed Gold Ulrick, is one most prolific ransomware cartels that has continued to strike entities globally while simultaneously  expanding its empire  by absorbing TrickBot and running side hustles that involve data extortion. After the syndicate expressed public support for Russia's invasion of Ukraine in February, it  suffered a major breach  of its own after its source code and internal chats we...

Days after F5 released patches for a critical remote code execution vulnerability affecting its BIG-IP family of products, security researchers are warning that they were able to create an exploit for the shortcoming. Tracked  CVE-2022-1388  (CVSS score: 9.8), the flaw relates to an iControl REST authentication bypass that, if successfully exploited, could lead to remote code execution, allowing an attacker to gain initial access and take control of an affected system. This could range anywhere from deploying cryptocurrency miners to dropping web shells for follow-on attacks, such as information theft and ransomware. "We have reproduced the fresh CVE-2022-1388 in F5's BIG-IP," cybersecurity company Positive Technologies  said  in a tweet on Friday. "Patch ASAP!" The critical security vulnerability impacts the following versions of BIG-IP products - 16.1.0 - 16.1.2 15.1.0 - 15.1.5 14.1.0 - 14.1.4 13.1.0 - 13.1.4 12.1.0 - 12.1.6 11.6.1 - 11.6.5 Fixe...

The U.S. Treasury Department on Friday moved to sanction virtual currency mixer Blender.io, marking the first time a mixing service has been subjected to economic blockades. The move signals continued efforts on the part of the government to prevent North Korea's Lazarus Group from laundering the funds stolen from the  unprecedented hack of Ronin Bridge  in late March. The newly imposed sanctions, issued by the U.S. Office of Foreign Assets Control (OFAC), target 45 Bitcoin addresses linked to Blender.io and four new wallets linked to Lazarus Group, an advanced persistent with ties to the Democratic People's Republic of Korea (DPRK). "Blender was used in processing over $20.5 million of the illicit proceeds," the Treasury  said , adding it was utilized by DPRK to "support its malicious cyber activities and money-laundering of stolen virtual currency." Cryptocurrency mixers, also called  tumblers , are privacy-focused services that allow users to move cr...

A new malicious campaign has been spotted taking advantage of Windows event logs to stash chunks of shellcode for the first time in the wild. "It allows the 'fileless' last stage trojan to be hidden from plain sight in the file system," Kaspersky researcher Denis Legezo  said  in a technical write-up published this week. The stealthy infection process, not attributed to a known actor, is believed to have commenced in September 2021 when the intended targets were lured into downloading compressed .RAR files containing Cobalt Strike and  Silent Break . "The spreading of the Cobalt Strike module was achieved by persuading the target to download the link to the .RAR on the legitimate site file.io, and run it themselves," Legezo explained. The adversary simulation software modules are then used as a launchpad to inject code into Windows system processes or trusted applications. Also notable is the use of anti-detection wrappers as part of the toolset, sugg...

QNAP, Taiwanese maker of network-attached storage (NAS) devices, on Friday released security updates to patch nine security weaknesses, including a critical issue that could be exploited to take over an affected system. "A vulnerability has been reported to affect QNAP VS Series NVR running QVR," QNAP  said  in an advisory. "If exploited, this vulnerability allows remote attackers to run arbitrary commands." Tracked as  CVE-2022-27588  (CVSS score: 9.8), the vulnerability has been addressed in QVR 5.1.6 build 20220401 and later. Credited with reporting the flaw is the Japan Computer Emergency Response Team Coordination Center (JPCERT/CC). Aside from the critical shortcoming, QNAP has also resolved three high-severity and five medium-severity bugs in its software - CVE-2021-38693  (CVSS score: 5.3) - A  path traversal vulnerability  in thttpd affecting QNAP devices running QTS, QuTS hero, QuTScloud, and QVR Pro Appliance, leading to information d...

Cybersecurity researchers have discovered a new Windows malware with worm-like capabilities and is propagated by means of removable USB devices. Attributing the malware to a cluster named " Raspberry Robin ," Red Canary researchers  noted  that the worm "leverages Windows Installer to reach out to QNAP-associated domains and download a malicious DLL." The earliest signs of the activity are said to date back to September 2021, with infections observed in organizations with ties to technology and manufacturing sectors. Attack chains pertaining to Raspberry Robin start with connecting an infected USB drive to a Windows machine. Present within the device is the worm payload, which appears as a .LNK shortcut file to a legitimate folder. The worm then takes care of spawning a new process using cmd.exe to read and execute a malicious file stored on the external drive. This is followed by launching explorer.exe and msiexec.exe, the latter of which is used for extern...

A pay-per-install (PPI) malware service known as PrivateLoader has been spotted distributing a "fairly sophisticated" framework called NetDooka, granting attackers complete control over the infected devices. "The framework is distributed via a pay-per-install (PPI) service and contains multiple parts, including a loader, a dropper, a protection driver, and a full-featured remote access trojan (RAT) that implements its own network communication protocol," Trend Micro  said  in a report published Thursday. PrivateLoader, as documented by Intel 471 in February 2022, functions as a downloader responsible for downloading and installing additional malware onto the infected system, including SmokeLoader, RedLine Stealer, Vidar, Raccoon, GCleaner, and  Anubis . Featuring anti-analysis techniques, PrivateLoader is written in the C++ programming language and is said to be in active development, with the downloader malware family gaining traction among multiple threat ac...

The China-based threat actor known as Mustang Panda has been observed refining and retooling its tactics and malware to strike entities located in Asia, the European Union, Russia, and the U.S. "Mustang Panda is a highly motivated APT group relying primarily on the use of topical lures and social engineering to trick victims into infecting themselves," Cisco Talos  said  in a new report detailing the group's evolving modus operandi. The group is known to have targeted a wide range of organizations since at least 2012, with the actor primarily relying on email-based social engineering to gain initial access to drop PlugX, a backdoor predominantly deployed for long-term access. Phishing messages attributed to the campaign contain malicious lures masquerading as official European Union reports on the ongoing conflict in Ukraine or Ukrainian government reports, both of which download malware onto compromised machines. Also observed are phishing messages tailored to ta...

Google has released monthly security patches for Android with fixes for 37 flaws across different components, one of which is a fix for an actively exploited Linux kernel vulnerability that came to light earlier this year. Tracked as  CVE-2021-22600  (CVSS score: 7.8), the vulnerability is ranked "High" for severity and could be exploited by a local user to escalate privileges or deny service. The issue relates to a  double-free vulnerability  residing in the  Packet  network protocol implementation in the Linux kernel that could cause memory corruption, potentially leading to denial-of-service or execution of arbitrary code. Patches were released by different Linux distributions, including  Debian ,  Red Hat ,  SUSE , and  Ubuntu  in December 2021 and January 2022. "There are indications that CVE-2021-22600 may be under limited, targeted exploitation," Google  noted  in its Android Security Bulletin for May 2022. Sp...

The National Institute of Standards and Technology (NIST) on Thursday released an updated cybersecurity guidance for managing risks in the supply chain, as it increasingly emerges as a lucrative attack vector. "It encourages organizations to consider the vulnerabilities not only of a finished product they are considering using, but also of its components — which may have been developed elsewhere — and the journey those components took to reach their destination," NIST said in a statement. The new  directive  outlines  major security controls and practices  that entities should adopt to identify, assess, and respond to risks at different stages of the supply chain, including the possibility of malicious functionality, flaws in third-party software, insertion of counterfeit hardware, and poor manufacturing and development practices. The development follows an Executive Order issued by the U.S. President on " Improving the Nation's Cybersecurity (14028) " las...