Bermuda residents and holiday home owners have been put on high alert after a new BELCO email scam has been uncovered. A warning has now been issued by the company after some customers were targeted by scammers and were sent malware-infected emails from the company’s email domain.

BELCO, the Bermuda Electric Light Company Limited, supplies electricity to homes in Bermuda and is the only supplier in the British Overseas Territory. All individuals who own or rent a property on the islands are at risk of receiving a spam email that could potentially infect their computer, mobile phone, tablet or laptop with malware.

The type of malware sent in the spam emails is a form of ransomware. This type of malware is particularly nasty as it will allow the perpetrators of the campaign to lock files on an infected computer and potentially also on a business network to which the device connects. The malware delivered in the BELCO email scam can also cause corruption of computer files. The criminals behind the campaigns have designed the malware to give victims little choice but to pay the ransom.

Critical files are encrypted via the ransomware to prevent the user from gaining access. The only way of regaining access to the files is by restoring them from a backup or by paying a ransom to the criminals behind the campaign. Once a ransom has been paid, the criminals behind the BELCO malware attack will supply a security key that can be used to unlock the data. There is no guarantee that the security key will be provided once the ransom has been paid and it is conceivable that the criminals could continue to extort customers who give into their demands.

On a personal computer, files such as personal documents or family photographs could potentially be encrypted and lost. For business users the risk is even higher. Without access to critical files, all business could effectively grind to a halt. Even when a backup can be used to restore the ransomware-encrypted files, significant losses could be suffered. Performing a full restoration of data takes time and unless a backup was made just minutes before files were encrypted, some data will invariably be lost. Customers will also experience disruption to services while remediation takes place and systems are restored.

BELCO email scam uses legitimate company domain

The BELCO email scam uses a common technique to fool targets into installing malware on their devices. Criminals have been using email to deliver malware for many years, but they are now getting very good at creating highly convincing campaigns. It is becoming much harder to identify a spam email containing malware.

What makes this campaign particularly convincing is the emails appear to have been sent from the domain. Even an individual who has adopted email security best practices, such as checking the sender’s address before opening an attachment, may be fooled into installing the malware contained in the email.

The email informs the recipient of an unpaid electricity bill and includes a warning that electricity will be cut off if the bill is not paid promptly. In order to find out how much money needs to be paid customers are required to open the attachment. Doing so will result in the malware being installed.

The email was sent from the address billerz The domain is correct, although there is no official billerz address used by the electricity company. A warning sent to customers advises that any legitimate bill sent by the company will come from ebilladmin

Simply receiving the email will not infect a computer but it is imperative that the attachment is not opened under any circumstances. Any customer receiving the email should delete it immediately from their inbox or spam folder. They should then ensure it is also deleted from their deleted email folder.

Identifying spam and scam emails

The BELCO email scam is convincing. It could easily pass for a genuine email if the recipient of the email is not particularly security conscious. There are tell-tale signs that it is a fake.

  • The email address differs from the one usually used by the company to send electronic electricity bills
  • There is a threat contained in the email – Immediate action is required to avoid unpleasant consequences
  • Insufficient information is included in the email body, requiring the user to open an attachment
  • The email address contains an odd spelling not typically used by a reputable company – billerz

Individuals, and especially companies, should consider implementing additional controls to prevent emails such as this from being delivered. Using a spam filtering solution will prevent the vast majority of spam and scam emails from being delivered. As more phishing and spam emails are being sent, and the perpetrators are becoming more skilled at creating convincing campaigns, this is one of the best defenses to prevent accidental malware infection. The cost of an Anti-Spam solution will be considerably less than the cost of a ransom to unlock vital data.