Cybercriminals use new tactics to attack industrial organizations in a hunt for corporate credentials
Woburn, MA — January 19, 2022 — Kaspersky experts have uncovered a new, rapidly evolving, series of spyware campaigns attacking more than 2,000 industrial enterprises across the globe according to new findings in a Kaspersky ICS CERT report. Unlike many mainstream spyware campaigns, these attacks stand out due to the limited number of targets in each attack, and the very short lifespan of each malicious sample. The study identified more than 25 marketplaces where stolen data is being sold.
During the first half of 2021, Kaspersky ICS CERT experts noticed a curious anomaly in statistics on spyware threats blocked on ICS computers. Although the malware used in these attacks belongs to well-known commodity spyware families such as Agent Tesla/Origin Logger, HawkEye and others, these attacks stand out from the mainstream due to the very limited number of targets in each attack (from a handful to a few dozen) and the very short lifetime of each malicious sample.
A closer analysis of 58,586 samples of spyware blocked on ICS computers in H1 2021 revealed that around 21.2% of them were part of this new limited-scope and short-lifetime attack series. Their lifecycle is limited to about 25 days, which is much less than the lifespan of a ‘traditional’ spyware campaign.
Although each of these “anomalous” spyware samples is short-lived and not widely distributed, they account for a disproportionately large share of all spyware attacks. In Asia, for example, every sixth computer attacked with spyware was hit with one of the “anomalous” spyware samples (2.1% out of 11.9%).
Notably, most of these campaigns are spread from one industrial enterprise to another via well-crafted phishing emails. Once penetrated into the victim’s system, the attacker uses the device as the next-attack C2 (command and control) server. With access to the victim’s mailing list, criminals can abuse corporate email and spread the spyware even further.
According to Kaspersky ICS CERT telemetry, more than 2,000 industrial organizations worldwide have been incorporated into the malicious infrastructure and used by cybergangs to spread the attack to their contact organizations and business partners. We estimate the total number of compromised or stolen corporate accounts as a result of these attacks to be more than 7,000.
The sensitive data obtained from ICS computers often ends up in various marketplaces. Kaspersky experts identified more than 25 different marketplaces where the stolen credentials from these industrial campaigns were being sold. Analysis of those marketplaces showcased high demand for corporate account credentials, especially for Remote Desktop Accounts (RDP). Over 46% of all RDP accounts sold in analyzed marketplaces are owned by companies in the US, while the rest originate from Asia, Europe, and Latin America. Almost 4% (almost 2,000 accounts) of all RDP accounts being sold belonged to industrial enterprises.
Another growing market is Spyware-as-a-Service. Since the source codes of some popular spyware programs have been made public, they have become highly available in online shops in the form of a service – developers sell not only malware as a product but also a license for a malware builder and access to infrastructure preconfigured to build the malware.
‘‘Throughout 2021, cybercriminals extensively used spyware to attack industrial computers, and today we witness a new rapidly evolving trend in the industrial threat landscape,” comments Kirill Kruglov, security expert at Kaspersky ICS CERT. “To avoid detection, criminals shrink the size of each attack and limit the use of each malware sample by quickly enforcing its replacement with a fresh-built one. Other tactics include the vast abuse of corporate email infrastructure to spread malware. This is different from anything we’ve observed in spyware before and we anticipate such attacks to gain traction in the year ahead.”
To read more about the ‘anomalous’ spyware campaigns, please visit Kaspersky ICS CERT.
To learn more about threats to ICS and industrial enterprises in 2022, check out the ICS threat predictions for 2022.
To ensure adequate protection of an industrial enterprise, its partner network operations and business, Kaspersky experts recommend:
- Implementing two-factor authentication for corporate email access and other internet-facing services (including RDP, VPN-SSL gateways, etc.) that could be used by an attacker to gain access to your company’s internal infrastructure and business-critical data.
- Making sure that all the endpoints, both on IT and OT networks, are protected with a modern endpoint security solution that is properly configured and is kept up-to-date.
- Regularly training your personnel to handle their incoming emails securely and to protect their systems from malware that email attachments may contain.
- Regularly checking spam folders instead of just emptying them.
- Monitoring the exposure of your organization’s accounts to the web.
- Using sandbox solutions designed to automatically test attachments in inbound email traffic. However, make sure your sandbox solution is configured to not skip emails from “trusted” sources, including partner and contact organizations, as no one is 100% protected from security compromise.
- Testing attachments in outbound emails to ensure you’re not compromised.
About Kaspersky ICS CERT
Kaspersky Industrial Control Systems Cyber Emergency Response Team (Kaspersky ICS CERT) is a global project launched by Kaspersky in 2016 to coordinate the efforts of automation system vendors, industrial facility owners and operators, and IT security researchers to protect industrial enterprises from cyberattacks. Kaspersky ICS CERT devotes its efforts primarily to identifying potential and existing threats that target industrial automation systems and the Industrial Internet of Things. Kaspersky ICS CERT is an active member and partner of leading international organizations that develop recommendations on protecting industrial enterprises from cyberthreats ics-cert.kaspersky.com/
Kaspersky is a global cybersecurity company founded in 1997. Kaspersky’s deep threat intelligence and security expertise is constantly transforming into innovative security solutions and services to protect businesses, critical infrastructure, governments and consumers around the globe. The company’s comprehensive security portfolio includes leading endpoint protection and a number of specialized security solutions and services to fight sophisticated and evolving digital threats. Over 400 million users are protected by Kaspersky technologies and we help 240,000 corporate clients protect what matters most to them. Learn more at usa.kaspersky.com.