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The U.S. Federal Bureau of Investigation (FBI) is warning of a new trend of dual ransomware attacks targeting the same victims, at least since July 2023. "During these attacks, cyber threat actors deployed two different ransomware variants against victim companies from the following variants: AvosLocker, Diamond, Hive, Karakurt, LockBit, Quantum, and Royal," the FBI  said  in an alert. "Variants were deployed in various combinations." Not much is known about the scale of such attacks, although it's believed that they happen in close proximity to one another, ranging from anywhere between 48 hours to within 10 days. Another notable change observed in ransomware attacks is the increased use of custom data theft, wiper tools, and malware to exert pressure on victims to pay up. "This use of dual ransomware variants resulted in a combination of data encryption, exfiltration, and financial losses from ransom payments," the agency said. "Second ran

The U.S. Federal Bureau of Investigation (FBI) is warning that Barracuda Networks Email Security Gateway (ESG) appliances patched against a recently disclosed critical flaw continue to be at risk of potential compromise from suspected Chinese hacking groups. It also  deemed  the fixes as "ineffective" and that it "continues to observe active intrusions and considers all affected Barracuda ESG appliances to be compromised and vulnerable to this exploit." Tracked as  CVE-2023-2868  (CVSS score: 9.8), the zero-day bug is said to have been weaponized as early as October 2022, more than seven months before the security hole was plugged. Google-owned Mandiant is tracking the China-nexus activity cluster under the name  UNC4841 . The remote command injection vulnerability, impacting versions 5.1.3.001 through 9.2.0.006, allows for unauthorized execution of system commands with administrator privileges on the ESG product. In the attacks observed so far, a successful b

The U.S. Federal Bureau of Investigation (FBI) is warning about cyber crooks masquerading as legitimate non-fungible token (NFT) developers to steal cryptocurrency and other digital assets from unsuspecting users. In these fraudulent schemes, criminals either obtain direct access to NFT developer social media accounts or create look-alike accounts to promote "exclusive" new NFT releases, often employing misleading advertising campaigns that create a sense of urgency to pull them off. "Links provided in these announcements are phishing links directing victims to a spoofed website that appears to be a legitimate extension of a particular NFT project," the FBI  said  in an advisory last week. The replica websites urge potential targets to connect their cryptocurrency wallets and purchase the NFT, only for the threat actors to siphon the funds and NFTs to wallets under their control. "Contents stolen from victims' wallets are often processed through a ser

A former U.S. National Security Agency (NSA) employee has been arrested on charges of attempting to sell classified information to a foreign spy, who was actually an undercover agent working for the Federal Bureau of Investigation (FBI). Jareh Sebastian Dalke, 30, was employed at the NSA for less than a month from June 6, 2022, to July 1, 2022, serving as an Information Systems Security Designer as part of a temporary assignment in Washington D.C. According to an  affidavit  filed by the FBI, Dalke was also a member of the U.S. Army from about 2015 to 2018 and held a Secret security clearance, which he received in 2016. The defendant further held a Top Secret security clearance during his tenure at the NSA. "Between August and September 2022, Dalke used an encrypted email account to transmit excerpts of three classified documents he had obtained during his employment to an individual Dalke believed to be working for a foreign government," the Justice Department (DoJ)  sai

The U.S. Federal Bureau of Investigation (FBI) on Monday warned of cyber criminals increasingly exploiting flaws in decentralized finance (DeFi) platforms to plunder cryptocurrency. "The FBI has observed cyber criminals exploiting vulnerabilities in the smart contracts governing DeFi platforms to steal investors' cryptocurrency," the agency  said  in a notification. Attackers are said to have used different methods to hack and steal cryptocurrency from DeFi platforms, including initiating flash loans that trigger exploits in the platforms' smart contracts and exploiting signature verification flaws in their token bridge to withdraw all investments. The agency has also observed criminals defrauding the platforms by manipulating cryptocurrency price pairs – assets that can be traded for each other on an exchange – by exploiting a series of vulnerabilities to bypass  slippage checks  and steal roughly $35 million in digital funds. It further said that the threat ac

The U.S. Department of Justice (DoJ) has announced the seizure of $500,000 worth of Bitcoin from North Korean hackers who extorted digital payments from several organizations by using a new ransomware strain known as Maui. "The seized funds include ransoms paid by healthcare providers in Kansas and Colorado," the DoJ  said  in a press release issued Tuesday. The recovery of the bitcoin ransoms comes after the agency said it took control of two cryptocurrency accounts that were used to receive payments to the tune of $100,000 and $120,000 from the medical centers. The DoJ did not disclose where the rest of the payments originated from. "Reporting cyber incidents to law enforcement and cooperating with investigations not only protects the United States, it is also good business," said Assistant Attorney General Matthew G. Olsen of the DoJ's National Security Division. "The reimbursement to these victims of the ransom shows why it pays to work with law en

The U.S. Federal Bureau of Investigation (FBI) has warned of cyber criminals building rogue cryptocurrency-themed apps to defraud investors in the virtual assets space. "The FBI has observed cyber criminals contacting U.S. investors, fraudulently claiming to offer legitimate cryptocurrency investment services, and convincing investors to download fraudulent mobile apps, which the cyber criminals have used with increasing success over time to defraud the investors of their cryptocurrency," the agency  said  [PDF]. The illicit scheme, which aims to take advantage of increased interest in the crypto sector, is believed to have netted 244 victims, with losses estimated at $42.7 million between October 4, 2021, and May 13, 2022. According to the law enforcement authority, threat actors are misusing the names, logos, and other identifying information of legitimate businesses to create fake websites in an attempt to lure potential investors. In three instances highlighted by

In a new joint cybersecurity advisory, U.S. cybersecurity and intelligence agencies have warned about the use of Maui ransomware by North Korean government-backed hackers to target the healthcare sector since at least May 2021. "North Korean state-sponsored cyber actors used Maui ransomware in these incidents to encrypt servers responsible for healthcare services—including electronic health records services, diagnostics services, imaging services, and intranet services," the authorities  noted . The  alert  comes courtesy of the U.S. Cybersecurity and Infrastructure Security Agency (CISA), the Federal Bureau of Investigation (FBI), and the Department of the Treasury. Cybersecurity firm Stairwell, whose findings formed the basis of the advisory, said the lesser-known ransomware family stands out because of a lack of several key features commonly associated with ransomware-as-a-service (RaaS) groups. This includes the absence of "embedded ransom note to provide recov

U.S. cybersecurity and intelligence agencies have  warned  about China-based state-sponsored cyber actors leveraging network vulnerabilities to exploit public and private sector organizations since at least 2020. The widespread intrusion campaigns aim to exploit publicly identified security flaws in network devices such as Small Office/Home Office (SOHO) routers and Network Attached Storage (NAS) devices with the goal of gaining deeper access to victim networks. In addition, the actors used these compromised devices as route command-and-control (C2) traffic to break into other targets at scale, the U.S. National Security Agency (NSA), the Cybersecurity and Infrastructure Security Agency (CISA), and the Federal Bureau of Investigation (FBI)  said  in a joint advisory. The perpetrators, besides shifting their tactics in response to public disclosures, are known to employ a mix of open-source and custom tools for reconnaissance and vulnerability scanning as well as to obscure and ble

Network credentials and virtual private network (VPN) access for colleges and universities based in the U.S. are being advertised for sale on underground and public criminal marketplaces. "This exposure of sensitive credential and network access information, especially privileged user accounts, could lead to subsequent cyber attacks against individual users or affiliated organizations," the U.S. Federal Bureau of Investigation (FBI)  said  in an advisory published last week. The cyber intrusions against educational institutions involve threat actors leveraging tactics like spear-phishing and ransomware to carry out credential harvesting activities. The gathered credentials are then exfiltrated and sold on Russian cybercrime forums for prices ranging from a few to thousands of U.S. dollars. Armed with this login information, the agency pointed out, adversaries can proceed to conduct brute-force  credential stuffing  attacks to break into victim accounts spanning different

The U.S. Federal Bureau of Investigation (FBI) is sounding the alarm on the BlackCat ransomware-as-a-service (RaaS), which it said victimized at least 60 entities worldwide between as of March 2022 since its emergence last November. Also called ALPHV and  Noberus , the malware is notable for being the first-ever ransomware written in the Rust programming language, which is known to be memory safe and offer improved performance. "Many of the developers and money launderers for BlackCat/ALPHV are linked to  DarkSide / BlackMatter , indicating they have extensive networks and experience with ransomware operations," the FBI said in an  advisory  published last week. The disclosure comes weeks after twin reports from  Cisco Talos  and  Kasperksy  uncovered links between BlackCat and BlackMatter ransomware families, including the use of a modified version of a data exfiltration tool dubbed Fendr that's been previously only observed in BlackMatter-related activity. "A

The Five Eyes nations have released a  joint cybersecurity advisory  warning of increased  malicious attacks  from Russian state-sponsored actors and criminal groups targeting critical infrastructure organizations amidst the ongoing military siege on Ukraine. "Evolving intelligence indicates that the Russian government is exploring options for potential cyberattacks," authorities from Australia, Canada, New Zealand, the U.K., and the U.S.  said . "Russia's invasion of Ukraine could expose organizations both within and beyond the region to increased malicious cyber activity. This activity may occur as a response to the unprecedented economic costs imposed on Russia as well as material support provided by the United States and U.S. allies and partners." The  advisory  follows  another alert  from the U.S. government cautioning of nation-state actors deploying specialized malware to maintain access to industrial control systems (ICS) and supervisory control an

The U.S. Cybersecurity and Infrastructure Security Agency (CISA), along with the Federal Bureau of Investigation (FBI) and the Treasury Department, warned of a new set of ongoing cyber attacks carried out by the Lazarus Group targeting blockchain companies. Calling the activity cluster  TraderTraitor , the infiltrations involve the North Korean state-sponsored advanced persistent threat (APT) actor striking entities operating in the Web3.0 industry since at least 2020. Targeted organizations include cryptocurrency exchanges, decentralized finance (DeFi) protocols, play-to-earn cryptocurrency video games, cryptocurrency trading companies, venture capital funds investing in cryptocurrency, and individual holders of large amounts of cryptocurrency or valuable non-fungible tokens (NFTs). The attack chains commence with the threat actor reaching out to victims via different communication platforms to lure them into downloading weaponized cryptocurrency apps for Windows and macOS, subse

An international law enforcement operation raided and took down RaidForums, one of the world's largest hacking forums notorious for selling access to hacked personal information belonging to users. Dubbed Tourniquet, the seizure of the cybercrime website involved authorities from the U.S., U.K., Sweden, Portugal, and Romania, with the criminal investigation resulting in the  arrest  of the forum's administrator at his home last month in Croydon, England. The three confiscated domains associated with the illicit marketplace include "raidforums[.]com," "Rf[.]ws," and "Raid[.]lol." Diogo Santos Coelho (aka "Omnipotent"), the said founder and chief administrator, was apprehended in the U.K. on January 31 and is pending extradition to the U.S. Santos Coelho has been charged with conspiracy, access device fraud, and aggravated identity theft. In addition to detailing Santos Coelho's central role in designing and administering the soft

A 23-year-old Russian national has been indicted in the U.S. and added to the Federal Bureau of Investigation's (FBI) Cyber Most Wanted List for his alleged role as the administrator of Marketplace A, a cyber crime forum that sold stolen login credentials, personal information, and credit card data. Igor Dekhtyarchuk , who first appeared in hacker forums in 2013 under the alias "floraby," has been accused of charges of wire fraud, access device fraud, and aggravated identity theft, a set of offenses that could lead to up to 20 years in federal prison. According to the FBI's  Wanted poster , Dekhtyarchuk previously studied at the Ural State University in Yekaterinburg, Russia, and was last known to reside in the city of Kamensk-Uralsky. "Marketplace A specialized in the sale of unlawfully obtained access devices for compromised online payment platforms, retailers, and credit card accounts, including providing the data associated with those accounts such as na

The U.S. Department of Justice (DoJ) earlier this week appointed Eun Young Choi to serve as the first Director of the National Cryptocurrency Enforcement Team (NCET) it established last year. The NCET was  created  to tackle the criminal misuse of cryptocurrencies and digital assets," with a focus on illegal activities in virtual currency exchanges, mixing and tumbling services, and money laundering infrastructure actors to fuel cyberattacks and ransomware and extortion schemes. "The NCET will serve as the focal point for the department's efforts to tackle the growth of crime involving [digital assets and distributed ledger] technologies,"  said  Assistant Attorney General Kenneth A. Polite Jr. of the Justice Department's Criminal Division. Separately, the Federal Bureau of Investigation (FBI) said it's  launching  a new effort of its own called the Virtual Asset Exploitation Unit (VAXU) dedicated to tracking and seizing illicit cryptocurrencies as part o

Amid renewed tensions between the U.S. and Russia over  Ukraine  and  Kazakhstan , American cybersecurity and intelligence agencies on Tuesday released a joint advisory on how to detect, respond to, and mitigate cyberattacks orchestrated by Russian state-sponsored actors. To that end, the Cybersecurity and Infrastructure Security Agency (CISA), Federal Bureau of Investigation (FBI), and National Security Agency (NSA) have laid bare the tactics, techniques, and procedures (TTPs) adopted by the adversaries, including spear-phishing, brute-force, and  exploiting known vulnerabilities  to gain initial access to target networks. The list of flaws exploited by Russian hacking groups to gain an initial foothold, which the agencies said are "common but effective," are below — CVE-2018-13379  (FortiGate VPNs) CVE-2019-1653  (Cisco router) CVE-2019-2725  (Oracle WebLogic Server) CVE-2019-7609  (Kibana) CVE-2019-9670  (Zimbra software) CVE-2019-10149  (Exim Simple Mail Transf

The U.S. Federal Bureau of Investigation (FBI) has disclosed that an unidentified threat actor has been exploiting a previously unknown weakness in the FatPipe MPVPN networking devices at least since May 2021 to obtain an initial foothold and maintain persistent access into vulnerable networks, making it the latest company to join the likes of Cisco, Fortinet, Citrix, Pulse Secure that have had their systems exploited in the wild. "The vulnerability allowed APT actors to gain access to an unrestricted file upload function to drop a web shell for exploitation activity with root access, leading to elevated privileges and potential follow-on activity," the agency  said  in an alert published this week. "Exploitation of this vulnerability then served as a jumping off point into other infrastructure for the APT actors." In other words, the zero-day vulnerability enables a remote attacker to upload a file to any location on the filesystem on an affected device. The se

The U.S. Federal Bureau of Investigation (FBI) on Saturday confirmed unidentified threat actors have breached one of its email servers to blast hoax messages about a fake "sophisticated chain attack." The incident, which was first  publicly disclosed  by threat intelligence non-profit SpamHaus, involved sending rogue warning emails with the subject line "Urgent: Threat actor in systems" originating from a legitimate FBI email address "eims@ic.fbi[.]gov" that framed the attack on Vinny Troia, a security researcher and founder of dark web intelligence firms Night Lion Security and Shadowbyte, while also claiming him to be affiliated with a hacking outfit named TheDarkOverlord. SpamHaus cited its own telemetry data to point out that the email blasts happened over two "spam" waves, one shortly before 5:00 a.m. UTC and another one shortly after 7:00 a.m. UTC.  However, according to Kryptos Logic researcher Marcus Hutchins, the goal appears to be

An ongoing brute-force attack campaign targeting enterprise cloud environments has been spearheaded by the Russian military intelligence since mid-2019, according to a joint advisory published by intelligence agencies in the U.K. and U.S. The National Security Agency (NSA), Cybersecurity and Infrastructure Security Agency (CISA), Federal Bureau of Investigation (FBI), and the U.K.'s National Cyber Security Centre (NCSC) formally attributed the incursions to the Russian General Staff Main Intelligence Directorate (GRU) 85th Main Special Service Center (GTsSS). The  threat actor  is also tracked under various monikers, including  APT28  (FireEye Mandiant),  Fancy Bear  (CrowdStrike),  Sofacy  (Kaspersky),  STRONTIUM  (Microsoft), and  Iron Twilight  (Secureworks). APT28 has a track record of leveraging password spray and brute-force login attempts to plunder valid credentials that enable future surveillance or intrusion operations. In November 2020, Microsoft disclosed credenti