Helldown is a brutal and destructive ransomware variant first detected in early 2024, known for wiping backups and system restore points before demanding payment.
Infected systems display a dark-themed ransom note lie the one shown here, claiming responsibility and warning of permanent data loss if demands aren’t met.
If you discover a physical break-in at your offices, your first instinct would be to call the police; touch nothing and let them search for clues. Then, your attention would turn towards getting your business operations back up and running.
A cyber-attack requires the same approach. Your digital environment is a CRIME SCENE. It is crucial to leave the environment untouched to allow for a forensic investigation.
This is not a task for your IT team or MSP. Digital Forensic specialists available 24/7 to assist you, just like in a physical crime.
Helldown has earned a reputation for maximising its impact, not only by encrypting files but also by targeting backup systems and shadow copies, which makes recovery exceptionally difficult. The group often concentrates its attacks on organisations in critical sectors seeking to cause significant disruption.
Emerging as a major threat in August 2024, Helldown has quickly gained notoriety for its ability to target both Windows and Linux systems, with a particular emphasis on VMware ESXi servers. Adopting a double-extortion tactic, the group exfiltrates sensitive data before encrypting the victim's systems and threatens to release the stolen information unless a ransom is paid.
Helldown has affected a diverse array of industries, including healthcare, IT services, telecommunications, manufacturing, and critical infrastructure. Its victims span multiple countries, including the United States, Germany, France, Switzerland, and Thailand.
Helldown employs a double extortion strategy by first stealing sensitive data from the victim before encrypting their files. The group threatens to release or sell the exfiltrated data unless a ransom is paid.
After encryption, the victim's files are locked, and a ransom is demanded for decryption. This tactic combines the threat of data exposure with the inability to access critical systems, putting significant pressure on victims to pay.
Helldown emerged in 2024 and has carried out 37 targeted attacks to date. Its reputation is growing due to the chaos it causes and the high recovery costs for victims.
Solace Cyber’s track record includes hundreds of successful response recoveries, providing Digital Forensic Incident Response services, 24x7x365.
“Over 560 million Ticketmaster customers had their information stolen in a 2024 breach.”
Solace Global was founded in 2010 as global experts in risk management and security, offering services such as Travel, Crisis, and Offshore Risk Management. With a 24/7 Security Operations Centre and an in-house intelligence team providing daily and weekly reports, Solace Global is accredited to ISO 27001, 14001, 45001, and 9001 standards.
Solace Cyber was established in 2021, specialising in Cyber breaches, particularly Digital Forensics and Incident Response, Ransomware, Risk Management, and Information Security, along with Managed Security Services. The leadership team collectively possess over 20 years of experience in the IT and security industry.
Solace Cyber is accredited to ISO 27001 and, in 2022, achieved recognition as an Assured Service Provider for Cyber Incident Response (CIR) at the Standard Level with the National Cyber Security Centre. This prestigious accreditation reflects the UK's highest cyber security standards, ensuring top-tier incident response support and recovery.
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A forensic analysis needs to be meticulous and a clean restore and recovery requires a wealth of experience not normally available in an in-house team who must provide a broader range of IT support skills:
Solace Cyber was established precisely for this scenario. We have a well-defined process for handling cyber-attacks like Helldown, which involves a 6-step approach:
It includes a thorough digital forensic analysis from step 2 where the output becomes a central component of business recovery. This is because understanding the attack is of critical importance:
It is critical that the analysis of digital evidence is carried out to an agreed plan. This will have been designed to provide the best and earliest chance of discovering a root cause, which is essential to inform remediation/eradication and recovery as well as supporting a legal take-down case if this is applicable. A legal take-down means we can assist in the legal enforcement that stops the criminals from publishing the data, thus undermining the ransom notice.
Solace’s Digital Forensic and Incident Response teams maintain consistent communication throughout. Dedicated Incident Managers and technical engineering leads provide updates during the Cyber Incident Response journey, utilising risk registers and working within change management processes, all from triage through to post-incident, delivering successful business recovery.
Solace Cyber's assistance extends beyond the recovery phase. Following the restoration of your business operations, we collaborate with you to enhance your cyber security posture using a threat-informed methodology. This involves leveraging our Cyber 9 Step Process, designed to comprehensively address cyber threats and vulnerabilities.
Yes, Helldown is ransomware that encrypts files and prevents recovery by deleting backups and system restore data.
The Helldown ransomware entered your system by one of several ways:
We recommend you adopt policies to:
After recovering from a Helldown ransom attack, Solace Cyber recommends that you update your business continuity plan to account for lessons learnt during this attack & recovery.
Most ransomware breaches cost approximately £500K, while smaller email data breaches typically cost around £50K. There is a critical balance between preserving the environment for forensic analysis and quickly recovering it to minimise business interruption. The costs increase the longer it takes to identify and resolve the breach.
A cyber security insurance claim is complex, covering reasonable expenses for investigating and remediating an incident, along with legal fees, business interruption, criminal liability, employment liability, and ransom payments. Although the insurance industry is responsible for facilitating business recovery, cyber insurance is viewed as volatile, and many policies are not being validated correctly.
Finding your way through demands expertise, and that's where Solace Cyber can offer assistance.
Facing genuine pressure, there's a crucial decision to make - one that could rescue your organisation from weeks of operational standstill, reputation damage, and client data loss. Yet, the probability of a favourable outcome remains slim, emphasising the importance of engaging a specialised ransomware incident response team. They are your most viable recourse for navigating a ransomware incident.
The NCSC have documented the deliberations for paying ransomware: https://www.ncsc.gov.uk/ransomware/home
Important Reminder: It is a criminal offense to pay money to people who are subject to financial sanctions. The list of who is subject to financial sanctions is constantly changing.
The latest iteration can be found here: https://www.gov.uk/government/publications/financial-sanctions-consolidated-list-of-targets
Yes. There's a possibility that some of the lost data falls under the category of "Personal Data" belonging to your customers. It's your legal responsibility to safeguard this data, even if it has been lost. Additionally, you may need to notify the Information Commissioner's Office at https://ico.org.uk/.
Your insurer or legal counsel will provide guidance on the necessary steps and how to move forward in this situation.
Solace has experience collaborating with insurers and legal professionals and can offer support in managing this relationship during this challenging period.
A ransomware attack presents the most significant threat to your business by:
In the event of a business interruption, determining your position in the supply chain for any item and sustaining operations become challenges. If the disruption persists, maintaining business continuity becomes paramount. Moreover, upon restoration of systems and data, addressing any backlog of work and establishing operational protocols for the future becomes essential.
Ransomware ranks only behind receivership in terms of its capacity to incapacitate a business.
The NCSC is the UK National Cyber Security Centre. They provide cyber security guidance and support, helping to make the UK the safest place to live and work online. They have defined a Cyber Incident Response procedure and they have approved and accredited suppliers to provide this service.
As a recognised Assured Service Provider by the National Cyber Security Centre (NCSC), Solace Cyber provide comprehensive cyber risk management services that are designed to Protect, Detect & Mitigate cyber security threats across the UK.
Action Fraud is the UK's national reporting centre for fraud and cybercrime. Whether you have been scammed, defrauded, or experienced cybercrime in England, Wales, or Northern Ireland, Action Fraud offers a central point of contact for information on fraud and financially motivated cybercrime.
In the event of a Helldown ransom attack on your systems, REMAIN CALM.
DO NOT INTERACT WITH THEM, ATTEMPT TO RESTORE, OR OVERWRITE ANY DATA (explanation above).
Reach out to Solace Cyber at 01202 308818 or complete our form for a callback from one of our specialists.
We'll respond promptly to minimise your business's downtime.
Solace Cyber, part of Solace Global, helps companies across the UK recover from ransomware attacks and data breaches.
SOLACE GLOBAL CYBER LTD is registered in England & Wales no. 08830710
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