What is Ransomware?

Before talking about Ransomware as a Service(RaaS), let’s freshen up our minds by understanding what ransomware is and what it does.

An attacker secretly breaks into a system, quietly encrypts all the files inside and holds them hostage, demanding a ransom payment. Next day you come to work, open your laptop and try to access different types of files like customer records, transaction data or account info. Those files seem to be locked and a few moments later a message appears on the screen demanding millions of dollars in exchange for restoring access, and if you don’t pay, the files will be leaked publicly. You either must pay up or lose all that sensitive data. That is what ransomware is.

What is RaaS and How Does It Work?

For a while, initiating a ransomware attack required serious understanding of technical depth and skill. One had to understand how to write malicious code, break into network infrastructures, encrypt files and receive payments from victims without getting caught. Not just could anyone pull this off, it took real skill and knowledge to even get started.

Then cyber criminals got an idea and used their creativity to turn ransomware into a business. These are not just random hackers working out of a basement. RaaS groups like LockBit, BlackCat and Akira are organized criminal operations that have collectively attacked multiple banks and financial institutions worldwide.

Ransomware as a Service (RaaS) is exactly what it sounds like. A group of developers build a ransomware tool, create the infrastructure to manage attacks, set up payment portals for victims and then rent it out to other criminals.

The attack tool is a software program that does the dirty work automatically. When it gets inside a victim’s computer or network, it quietly goes through every file and locks them using encryption. The attacker is the only one with the key and without that key, the files are entirely useless. The tool will also leave behind a ransom note on the screen demanding payment.

The infrastructure built to manage attacks is quite interesting. There is usually a dark web portal where the attacker can log in, manage attacks and track which victims have paid. There is also a payment system that handles ransom collection in cryptocurrency so it cannot be traced, as well as a communication channel where victims can contact the attackers to negotiate or get instructions on how to pay.

One can simply sign up, pay the fee or agree to share a cut of the ransom with the developers. Once that is done, the bad actor just needs to find a way to get inside the target’s infrastructure and then launch the attack. The bad actor usually keeps 70% of whatever ransom is collected and the rest goes to the developers. Everyone profits and nobody has to meet in person or even know who the other person is.

RaaS kits on the dark web can go for as little as $40 per month but it can vary depending on how efficient and effective the tool is. As a cyber professional, what is scary is that ransomware attacks used to require a certain amount of skill to pull off but now all one needs is a credit card and bad intentions. This has created a whole new wave of criminals.

Why Banks Are the Perfect Target?

Banks and financial institutions are at the top of the list for these criminals. Every industry does not get hit equally due to certain reasons. Banks are targeted most because they hold sensitive data that includes social security numbers, account details, transaction records and customer personal data. Data like this is worth a lot of money on its own and the threat of exposing it publicly adds huge pressure on top of the ransom demand itself.

Another reason the banking industry is targeted way more often is because banks cannot afford downtime. Every hour systems are down or offline means transactions are halted, accounts are inaccessible and customers cannot access their money. This type of urgency makes banks far more likely to pay the ransom quickly.

There is also regulatory pressure adding stress. Banks are legally required to report breaches and notify their customers, and on top of that they have to answer to regulators. That is a lot of pressure hitting all at once.

Real World Example: 300 Banks Shut Down Overnight

300 banks across India were forced to shut down their systems temporarily after a ransomware attack hit C-Edge Technologies, a vendor that provides core banking software to small and mid-sized financial institutions across the country.

The banks were not targeted directly, instead it was the vendor that was the target. This successful attack on a single vendor caused a ripple effect that made those banks shut down their services overnight, cutting off customers from payment systems.

The attacker didn’t need to break into 300 different banks. They only needed one entry point and because so many financial institutions share the same vendors and technology providers, a single attack can create a wave of damage far beyond the original target. This is why RaaS is so dangerous.

What Banks Should Do to Protect Themselves

Employee Training — most attacks start with phishing emails, if staff can recognize a suspicious email or link the attack, this stops it before it even starts.

Regular Data Backups — back up your data regularly and actually test those backups. If files get locked, a clean backup means you most likely do not have to pay the ransom

Patch and Update Systems — most RaaS operators get in through known vulnerabilities in outdated software. Keeping systems updated closes the doors attackers rely on most.

Vendor Risk Management — know your vendors and their security posture. Any vendor plugged into your systems is basically another door an attacker can walk through.

Final Thoughts

RaaS has made it easier than ever for criminals to go after financial institutions. The attack in India showed how fast one breach can spiral into hundreds of victims overnight. This is not a future problem to prepare for someday. It is happening right now, and banks of every size need to be ready.