Nigerian Communications Commission’s Computer Security Incident Response Team (NCC-CSIRT) has called for the adoption of two-factor authentication by users of Telegram messaging app to protect their accounts and not download unknown Advanced IP Scanner Software.
The advice was in response to the discovery of a new attack, Somnia Ransomware, that compromises victims’ Virtual Private Network (VPN) accounts on the messaging app.
The alert and advisory on adoption of two-factor authentication was contained in a press release by the NCC Director of Public Affairs, Mr Reuben Muoka.
Ukrainian cyber experts discovered the attack, which uses Vidar Malware (Vidar Stealer) to steal Telegram session data which, in the absence of configured two-factor authentication and a passcode, allows unauthorised access to the victim’s telegram account and corporate account or network.
The malware, which exploits unauthorised access to users’ Telegram accounts and corporate accounts to steal data, targets platforms across iOS, Android, Linux, Mac and Windows Operating Systems.
“The Ukrainian CERT alleged that a Somnia Ransomware was created to be used on Telegram that tricks users to download an installer that mimics ‘Advanced IP Scanner’ software, which contains Vidar Malware.
“The installer infects the system with the Vidar stealer, which steals the victim’s Telegram session data to take control of their account.
“The threat actors abuse the victim’s Telegram account in some unspecified manner to steal VPN connection data (authentication and certificates).
“If the VPN account is not protected by two-factor authentication passcode, the hackers use it to gain unauthorised access to the victim’s employer’s corporate network.
“Once inside, the intruders conduct reconnaissance work using tools like Netscan, Rclone, Anydesk, and Ngrok, to perform various surveillance and remote access activities, and then deploy a Cobalt Strike beacon, exfiltrating data using the Rclone program,” the alert and advisory stated.
The CSIRT is the telecom sector’s cyber security incidence centre set up by the NCC to focus on incidents in the telecom sector and as they may affect telecom consumers and citizens at large.
The CSIRT also works collaboratively with ngCERT, established by the Federal Government to reduce the volume of future computer risk incidents by preparing, protecting, and securing Nigerian cyberspace to forestall attacks, and problems or related events.
