Anubis Ransomware: Understanding the Threat and How to Respond
- Neil Hare-Brown
- Apr 11
- 2 min read
Anubis Ransomware: What Businesses Need to Know
Anubis ransomware is a sophisticated and aggressive strain of malware that encrypts business-critical data and demands a ransom in exchange for decryption keys. While the name “Anubis” has been associated with multiple malware variants over time, in the ransomware space, Anubis has gained notoriety for its stealthy delivery methods and evolving attack techniques.
At STORM Guidance, we work with organisations affected by ransomware attacks like Anubis to contain threats, recover safely, and strengthen long-term cyber resilience. If your business is facing a ransomware incident, immediate action is critical.
How Anubis Ransomware Works
1. Initial Access
Anubis operators typically gain access to networks through:
Phishing emails containing malicious attachments or links
Exploited vulnerabilities in outdated software or remote desktop protocols (RDP)
Compromised credentials sold on dark web marketplaces
2. Payload Deployment & Encryption
Once inside a network, the malware:
Conducts reconnaissance to identify high-value data and systems
Encrypts files across endpoints and servers, often appending a specific extension
Drops a ransom note with payment instructions, typically demanding cryptocurrency
3. Double Extortion Tactics
Like many modern ransomware operations, Anubis uses double extortion by:
Stealing sensitive business data before encryption
Threatening to leak the data online if the ransom is not paid
Who Does Anubis Target?
Anubis has been known to target:
Small to mid-sized businesses across sectors including healthcare, manufacturing, and professional services
Organisations with poor email filtering or remote access security
Businesses with valuable data but limited in-house security resources
Its attacks are often opportunistic, but sometimes tailored—especially in cases where attackers identify high-value networks or data during initial access.
How to Protect Your Business from Anubis Ransomware
If you suspect or know that Anubis ransomware has infected your systems:
Disconnect affected systems from the network immediately
Do not delete any ransom notes or communication files
Contact a ransomware response specialist to assess your options
At STORM Guidance, our team can:
✔ Investigate the breach and contain the threat
✔ Support secure recovery of systems and data
✔ Help you evaluate legal, regulatory, and reputational impacts
✔ Handle ransom negotiations where necessary—with the right strategy and caution
Stay Informed. Stay Protected.
Anubis is just one of many ransomware threats impacting organisations today.
Cybercriminal tactics continue to evolve—and so must your defences. STORM Guidance is here to support your business with expert insight, rapid response, and proactive protection.
