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The ransomware-as-a-service group Medusa has adopted fresh tactics to gain access and added hundreds of victims in a little more than a year, according to an updated U.S. government advisory published Tuesday.
The gang is relying on access brokers,compensating them anywhere from $100 to $1 million, with higher prices going to those who work exclusively with Medusa. However, most of the brokers work simultaneously for βmultiple variants at the same time,β the advisory from the Cybersecurity and Infrastructure Security Agency, FBI and Health and Human Services Department states in one of the updated portions of the advisory.
Tuesdayβs update advisory expands upon aMarch 2025 advisory, drawing on ongoing FBI investigations.nIt includes information on the kinds of software vulnerabilities Medusa has exploited, such as Fortra GoAnywhere and BeyondTrust flaws.
βMedusa actors operate opportunistically by targeting victims with unpatched software rather than focusing on specific organizations or sectors; however, the Healthcare and Public Health (HPH) Sector has been a frequent victim of Medusa operations,β according to the advisory. βMedusa actors leverage newly announced exploits within 24 hours and have been observed to use exploits up to a week before public vulnerability disclosure.β
βHowever, there is no indication Medusa actors develop their own zero-day or N-day vulnerabilities, preferring instead to obtain advanced access to exploits from unknown sources or to quickly leverage newly announced exploits before potential victims can mitigate vulnerabilities through patching,β the advisory continues.
The approach appears to be netting gains: From March 2025 to April of this year, the victim tally in the advisory jumped from more than 300 to more than 500. The group was first identified in 2021.
βMedusa actors often use legitimate tools and living off the land techniques to evade detection. They may also leverage remote monitoring and management software and remote access services, including Remote Desktop Protocol, for lateral movement,β as updated sections of the advisory detail. βOnce inside a network, they use common utilities and tools to support credential access, data exfiltration, and ransomware deployment.β
Earlier this year, Microsoft detailed how a group it dubbed Storm-1175 was making use of Medusa ransomware in speedy operations. Symantec and Carbon Black also detailed earlier this year how North Korean hackers were leaning on Medusa to target the health care sector.
The post Medusa ransomware tallies hundreds of new victims, says updated advisory on groupβs tactics appeared first on CyberScoop.
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The home appliance giant LG Electronics USA said this week it plans to suspend any apps built for its smart TVs that turn oneβs television into an always-on residential proxy node. The move comes less than a month after researchers found that more than 42 percent of games and other apps available for download on LGβs webOS store allow unknown third-parties to route their Internet traffic through a userβs TV.
Proxy SDK prevalence among smart TV apps for LG (webOS) and Samsung (Tizen OS) televisions. Image: Spur.us.
On July 2, we featured research by the security firm SpurΒ that examined the prevalence of residential proxy software development kits (SDKs) in smart TV apps. Spur found more than 42 percent of apps available for download on LG smart TVs include SDKs that turn oneβs television in a proxy node indefinitely, and that more than a quarter of the apps made for Samsungβs Tizen operating system had similar residential proxy components.
Responding to questions about Spurβs research, LG Senior Vice President John Taylor told KrebsOnSecurity the company was working with app developers to remove the residential proxy option from their apps on the webOS platform. Developers that fail to comply, he said, will find their apps suspended.
βA residential proxy network is not an intended use for LG smart TVs, and LG Electronics is working with developers to remove the residential proxy option from their apps on the webOS platform,β Taylor said. βIf this option is not removed, these apps will be suspended.β
Taylor said LG is committed to keeping residential proxy networks out of its smart TV apps going forward, and that the companyβs review of those apps is βwell underway now.β
βAs part of our ongoing efforts to enhance platform quality and the user experience, LG will continue to strengthen our evaluation process for developer-submitted apps, including those that incorporate residential proxy SDKs,β Taylor wrote in an emailed statement.
App makers looking for ways to monetize their creations can turn to residential proxy providers, which pay developers to include SDKs that turn the userβs device into a residential proxy node that is rented to paying customers. In the case of LG and Samsung smart TVs, Spur found residential proxy SDKs bundled with everything from simple games like Pac-Man to screensavers and file utilities.
A Pac-Man smart TV app from Bright Data offers users the choice between viewing ads in the game or agreeing to allow their TV to serve as a residential proxy node. Image: Spur.us.
Spurβs report found the residential proxy network Bright Data accounted for a majority of proxy SDKs across both Samsung and LG smart TVs. In a statement shared with KrebsOnSecurity, Bright Data said its network is built on consent and responsibility and operates by LG and Samsung terms.
βEvery peer opts in through a dedicated screen and receives value in return; every customer is vetted, and our practices have now undergone a second independent audit by PwC,β the statement reads. βWe remain committed to an open, transparent internet where legitimate businesses, researchers, and institutions can responsibly access data that lives in the public domain.β
Bright Data and other proxy providers named in Spurβs report all say they follow rigorous know-your-customer processes to validate legitimate uses of their services, which is often heavily tied to content-scraping activities by said customers. The proxy companies also say they incorporate technological countermeasures to prevent proxy service customers from being able to interact with and control other devices on the proxy userβs local network.
Spur argues the problem is not that residential proxy networks exist, but rather that they are being embedded at scale in devices that most consumers do not think of as computers and are not equipped to audit.
βA one-time consent prompt buried in a TV app is not a substitute for meaningful transparency, ongoing control, and platform oversight,β Spurβs Trevor Sutter wrote. βThe risk is amplified when consent comes from individuals within the household who use the device but shouldnβt give consent, such as minors.β
LGβs announcement that it is culling residential proxy SDKs from its app store is welcome news, but the company recently came under fire for another questionable partnership: Pimping McAfee security products via software drivers included in its high-end LCD monitors.
Earlier this week, the Youtube channel Gamers Nexus showed that certain LG LCD monitors will automatically install an app that promotes paid McAfee antivirus subscriptions, and that the app arrives through Windows Update without an approval prompt.
Update, July 22, 1:06 p.m. ET: Added statement from Bright Data.
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But what if we need to wrangle Windows Event Logs for more than one system? In part 2, weβll wrangle EVTX logs at scale by incorporating Hayabusa and SOF-ELK into my rapid endpoint investigation workflow (βREIWβ)!Β
The post Wrangling Windows Event Logs with Hayabusa & SOF-ELK (Part 2) appeared first on Black Hills Information Security, Inc..