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Researchers have detailed what they call the "first successful attempt" at decrypting data infected with Hive ransomware without relying on the private key used to lock access to the content. "We were able to recover the master key for generating the file encryption key without the attacker's private key, by using a cryptographic vulnerability identified through analysis," a group of academics from South Korea's Kookmin University  said  in a new paper dissecting its encryption process. Hive, like other cybercriminal groups, operates a ransomware-as-a-service that uses different mechanisms to compromise business networks, exfiltrate data, and encrypt data on the networks, and attempts to collect a ransom in exchange for access to the decryption software. It was  first observed  in June 2021, when it struck a company called Altus Group. Hive leverages a variety of initial compromise methods, including vulnerable RDP servers, compromised VPN credentials,...

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...

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) on Friday  published  a repository of free tools and services to enable organizations to mitigate, detect, and respond effectively to malicious attacks and further improve their security posture. The " Free Cybersecurity Services and Tools " resource hub comprises a mix of 101 services provided by CISA, open-source utilities, and other implements offered by private and public sector organizations across the cybersecurity community. "Many organizations, both public and private, are target rich and resource poor," CISA Director, Jen Easterly, said in a statement. "The resources on this list will help such organizations improve their security posture, which is particularly critical in the current heightened threat environment." The tools catalog is the latest in a string of initiatives launched by CISA to combat cyber threats and help organizations adopt foundational measures to maximize re...

Patches have been issued to contain a "severe" security vulnerability in UpdraftPlus, a WordPress plugin with over three million installations, that can be weaponized to download the site's private data using an account on the vulnerable sites. "All versions of UpdraftPlus from March 2019 onwards have contained a vulnerability caused by a missing permissions-level check, allowing untrusted users access to backups," the maintainers of the plugin said in an advisory published this week. Security researcher Marc-Alexandre Montpas of Automattic has been credited with discovering and reporting the vulnerability on February 14 that's been assigned the identifier  CVE-2022-0633  (CVSS score: 8.5). The issue impacts UpdraftPlus versions from 1.16.7 to 1.22.2. UpdraftPlus is a  backup and restoration solution  that's capable of performing full, manual, or scheduled backups of WordPress files, databases, plugins and themes, which can then be reinstated via th...

Microsoft has warned of emerging threats in the  Web3  landscape, including "ice phishing" campaigns, as a surge in adoption of blockchain and DeFi technologies emphasizes the need to build security into the decentralized web while it's still in its early stages. The company's Microsoft 365 Defender Research Team called out various new avenues through which malicious actors may attempt to trick cryptocurrency users into giving up their private cryptographic keys and carry out unauthorized fund transfers. "One aspect that the immutable and public blockchain enables is complete transparency, so an attack can be observed and studied after it occurred," Christian Seifert, principal research manager at Microsoft's Security and Compliance group,  said . "It also allows assessment of the financial impact of attacks, which is challenging in traditional Web2 phishing attacks." The theft of the keys could be carried out in several ways, including im...

Numerous Windows machines located in South Korea have been targeted by a botnet tracked as PseudoManuscrypt since at least May 2021 by employing the same delivery tactics of another malware called CryptBot . "PseudoManuscrypt is disguised as an installer that is similar to a form of  CryptBot , and is being distributed," South Korean cybersecurity company AhnLab Security Emergency Response Center (ASEC)  said  in a report published today. "Not only is its file form similar to CryptBot, but it is also distributed via malicious sites exposed on the top search page when users search commercial software-related illegal programs such as Crack and Keygen," it added. According to ASEC, around 30 computers in the country are being consistently infected on a daily basis on average. PseudoManuscrypt was first documented by Russian cybersecurity firm Kaspersky in December 2021, when it  disclosed  details of a "mass-scale spyware attack campaign" infecting mo...

Multiple security vulnerabilities have been disclosed in Canonical's  Snap  software packaging and deployment system, the most critical of which can be exploited to escalate privilege to gain root privileges. Snaps are self-contained application packages that are designed to work on operating systems that use the Linux kernel and can be installed using a tool called snapd. Tracked as  CVE-2021-44731 , the issue concerns a privilege escalation flaw in the  snap-confine  function, a program used internally by snapd to construct the execution environment for snap applications. The shortcoming is rated 7.8 on the CVSS scoring system. "Successful exploitation of this vulnerability allows any unprivileged user to gain root privileges on the vulnerable host," Bharat Jogi, director of vulnerability and threat research at Qualys,  said , adding the weakness could be abused to "obtain full root privileges on default installations of Ubuntu." Red Hat, in an ind...

A "potentially destructive actor" aligned with the government of Iran is actively exploiting the well-known  Log4j vulnerability  to infect unpatched VMware Horizon servers with ransomware. Cybersecurity firm SentinelOne dubbed the group " TunnelVision " owing to their heavy reliance on tunneling tools, with overlaps in tactics observed to that of a broader group tracked under the moniker  Phosphorus  as well as Charming Kitten and Nemesis Kitten. "TunnelVision activities are characterized by wide-exploitation of 1-day vulnerabilities in target regions," SentinelOne researchers Amitai Ben Shushan Ehrlich and Yair Rigevsky  said  in a report, with the intrusions detected in the Middle East and the U.S. Also observed alongside Log4Shell is the exploitation of Fortinet FortiOS path traversal flaw ( CVE-2018-13379 ) and the Microsoft Exchange  ProxyShell  vulnerability to gain initial access into the target networks for post-exploitation. "Tunne...

These days, businesses all around the world have come to depend on cloud platforms for a variety of mission-critical workflows. They keep their CRM data in the cloud. They process their payrolls in the cloud. They even manage their HR processes through the cloud. And all of that means they're trusting the bulk of their privileged business data to those cloud providers, too. And while most major cloud providers do a decent job of keeping data secure, the majority of business users take an upload-it-and-forget-it approach to their data security needs. And that — needless to say — is dangerous. In reality, cloud providers can only protect a business's data if the business does its part by adhering to some cloud security best practices. And fortunately, they're not that complicated. Here are the four most important cloud security best practices businesses should build into their cloud operations right away. Never Skip Selection Due Diligence The first cloud security best p...

Cisco has released security updates to contain three vulnerabilities affecting its products, including one high-severity flaw in its Email Security Appliance (ESA) that could result in a denial-of-service (DoS) condition on an affected device. The weakness, assigned the identifier CVE-2022-20653 (CVSS score: 7.5), stems from a case of insufficient error handling in  DNS  name resolution that could be abused by an unauthenticated, remote attacker to send a specially crafted email message and cause a DoS. "A successful exploit could allow the attacker to cause the device to become unreachable from management interfaces or to process additional email messages for a period of time until the device recovers, resulting in a DoS condition," the company  said  in an advisory. "Continued attacks could cause the device to become completely unavailable, resulting in a persistent DoS condition." The flaw impacts Cisco ESA devices running Cisco AsyncOS Software running vers...