#StopRansomware: RansomHub Ransomware


The Federal Bureau of Investigation (FBI) and partners are releasing this joint advisory to disseminate known RansomHub ransomware IOCs and TTPs. These have been identified through FBI threat response activities and third-party reporting as recently as August 2024.

RansomHub is a ransomware-as-a-service variant—formerly known as Cyclops and Knight—that has established itself as an efficient and successful service model (recently attracting high-profile affiliates from other prominent variants such as LockBit and ALPHV). Since its inception in February 2024, RansomHub has encrypted and exfiltrated data from at least 210 victims representing the water and wastewater, information technology, government services and facilities, healthcare and public health, emergency services, food and agriculture, financial services, commercial facilities, critical manufacturing, transportation, and communications critical infrastructure sectors.

Read more…
Source: U.S. Federal Bureau of Investigation Cyber Division


Sign up for our Newsletter


Related:

  • Cisco tells Webex users to patch critical security flaws immediately

    April 17, 2026

    Cisco has pushed a new patch to address four critical-severity vulnerabilities plaguing its cloud-based Webex Services platform – and has also warned Wi-Fi access points users of a bug in certain versions of IOS XE that could result in a device bootloop. Webex Services is a platform for communication and collaboration, letting people hold video meetings, ...

  • Adapt or pay: an analysis of the AdaptixC2 framework

    April 17, 2026

    As highlighted in our previous post about the Mythic framework, threat actors are rapidly adopting emerging technologies and frameworks. A prime example of this trend is AdaptixC2, a relatively new open-source post-exploitation framework that has quickly captured the attention of the offensive security community. Its popularity stems from its open-source nature and high extensibility; the framework ...

  • British National Pleads Guilty to Hacking into Companies and Stealing At Least $8 Million in Virtual Currency

    April 17, 2026

    SANTA ANA, California – A United Kingdom man pleaded guilty today to conspiring with others to hack into the computer systems of at least a dozen companies via text message phishing attacks and to steal at least $8 million in virtual currency from individual victims throughout the United States. Tyler Robert Buchanan, 24, of Dundee, Scotland, ...

  • Dissecting Sapphire Sleet’s macOS intrusion from lure to compromise

    April 16, 2026

    Microsoft Threat Intelligence uncovered a macOS‑focused cyber campaign by the North Korean threat actor Sapphire Sleet that relies on social engineering rather than software vulnerabilities. By impersonating a legitimate software update, threat actors tricked users into manually running malicious files, allowing them to steal passwords, cryptocurrency assets, and personal data while avoiding built‑in macOS security checks. ...

  • “iCloud storage is full” scam is back, and now it wants your payment details

    April 16, 2026

    A few months ago, we reported on a fake cloud storage alert that triggered a redirect chain to an app that has since been delisted from the Apple Store. The threat of losing your photos is a powerful lure, so scammers are now using it to steal personal and financial details. The Guardian warns about an ...

  • Europol-supported global operation targets over 75 000 users engaged in DDoS attacks

    April 16, 2026

    On 13 April 2026, 21 countries joined forces in a coordinated action week that focused on enforcement and prevention measures against over 75 000 criminal users engaging in distributed denial-of-service (DDoS)-for-hire services. With over 75 000 warning emails and letters being sent to identified criminal users and 4 arrests, the action week also led to the ...