Cybersecurity agencies CISA and ACSC reveal 2021 top malware strains

guest · Aug 4, 2022

August 4, 2021

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) has released today a list of the most detected malware strains during last year in a joint advisory with the Australian Cyber Security Centre (ACSC).

"Most of the top malware strains have been in use for more than five years with their respective code bases evolving into multiple variations," the cybersecurity agencies said.
"The most prolific malware users of the top malware strains are cyber criminals, who use malware to deliver ransomware or facilitate theft of personal and financial information."
Click to expand...

The top malware strains observed in 2021 include Agent Tesla, AZORult, Formbook, Ursnif, LokiBot, MOUSEISLAND, NanoCore, Qakbot, Remcos, TrickBot, and GootLoader.

Out of these, Agent Tesla, AZORult, Formbook, LokiBot, NanoCore, Remcos, and TrickBot have been used in attacks for at least the last five years, while Qakbot and Ursnif have been used for over a decade.
Click to expand...

These malware families' longevity is due to their developers' ongoing efforts to upgrade them by adding new capabilities and ways to evade detection.

"Developers of these top 2021 malware strains continue to support, improve, and distribute their malware over several years. Malware developers benefit from lucrative cyber operations with low risk of negative consequences," the agencies added.
Click to expand...

CISA and ACSC: 2021 Top Malware Strains

This joint Cybersecurity Advisory (CSA) was coauthored by the Cybersecurity and Infrastructure Security Agency (CISA) and the Australian Cyber Security Centre (ACSC). This advisory provides details on the top malware strains observed in 2021. Malware, short for “malicious software,” can compromise a system by performing an unauthorized function or process. Malicious cyber actors often use malware to covertly compromise and then gain access to a computer or mobile device. Some examples of malware include viruses, worms, Trojans, ransomware, spyware, and rootkits.[1]

In 2021, the top malware strains included remote access Trojans (RATs), banking Trojans, information stealers, and ransomware. Most of the top malware strains have been in use for more than five years with their respective code bases evolving into multiple variations. The most prolific malware users are cyber criminals, who use malware to deliver ransomware or facilitate theft of personal and financial information.
Click to expand...

Log in or Sign up

Cybersecurity agencies CISA and ACSC reveal 2021 top malware strains

guest Guest

Log in or Sign up

Cybersecurity agencies CISA and ACSC reveal 2021 top malware strains

guest Guest

Useful Searches