Riltok Banking Trojan

Riltok is a family of Android mobile banking trojans. First observed in early 2018 targeting Russian users, it has since been used in campaigns in Europe, North America and East Asia.

Threat ID:: CC-3118
Category:: Trojan
Threat Severity:: Low
Threat Vector:: Email spam
Published:: 27 June 2019 12:00 AM

Report a cyber attack: call 0300 303 5222 or email [email protected]

Summary

Riltok is a family of Android mobile banking trojans. First observed in early 2018 targeting Russian users, it has since been used in campaigns in Europe, North America and East Asia.

Affected platforms

The following platforms are known to be affected:

Android

Google Android - All versions

Threat details

All Riltok variants are distributed disguised as legitimate applications hosted through third-party sites. Users are directed to these sites through links sent in email or SMS spam campaigns, or through messages sent from previously compromised devices.

Once installed, Riltok will continually ask the user for full permissions until granted, before setting itself as the default SMS messaging application and hiding on the device. It will then scan the affected device for banking applications and use this information to tailor it's phishing pages, displayed whenever the user navigates to a corresponding site. Riltok will also display Google Play Services dialogue boxes requesting banking credentials.

Remediation steps

Type	Step
	To prevent and detect a trojan infection, ensure that: A robust program of education and awareness training is delivered to users to ensure they don’t open attachments or follow links within unsolicited emails. All operating systems, anti-virus and other security products are kept up-to-date. Regular anti-virus and security scans are performed on your organisation’s estate. All day-to-day computer activities such as email and internet are performed using non-administrative accounts. Strong password policies are in place. Network, proxy and firewall logs should be monitored for suspicious activity. User accounts accessed from affected devices should be reset on a clean computer. Your organisation adopts a holistic all-round approach to Cyber Security as advocated by the 10 Steps to Cyber Security.

Type

Step

To prevent and detect a trojan infection, ensure that:

A robust program of education and awareness training is delivered to users to ensure they don’t open attachments or follow links within unsolicited emails.
All operating systems, anti-virus and other security products are kept up-to-date.
Regular anti-virus and security scans are performed on your organisation’s estate.
All day-to-day computer activities such as email and internet are performed using non-administrative accounts.
Strong password policies are in place.
Network, proxy and firewall logs should be monitored for suspicious activity.
User accounts accessed from affected devices should be reset on a clean computer.
Your organisation adopts a holistic all-round approach to Cyber Security as advocated by the 10 Steps to Cyber Security.

Last edited: 14 February 2020 2:44 pm