America’s ‘Cyber Command’ Is Trying to Disrupt the World’s Largest Botnet

The Washington Post reports: In recent weeks, the U.S. military has mounted an operation to temporarily disrupt what is described as the world’s largest botnet — one used also to drop ransomware, which officials say is one of the top threats to the 2020 election.

U.S. Cyber Command’s campaign against the Trickbot botnet, an army of at least 1 million hijacked computers run by Russian-speaking criminals, is not expected to permanently dismantle the network, said four U.S. officials, who spoke on the condition of anonymity because of the matter’s sensitivity. But it is one way to distract them at least for a while as they seek to restore operations.


U.S. Cyber Command also “stuffed millions of bogus records about new victims into the Trickbot database — apparently to confuse or stymie the botnet’s operators,” reports security researcher Brian Krebs: Alex Holden, chief information security officer and president of Milwaukee-based Hold Security, has been monitoring Trickbot activity before and after the 10-day operation. Holden said while the attack on Trickbot appears to have cut its operators off from a large number of victim computers, the bad guys still have passwords, financial data and reams of other sensitive information stolen from more than 2.7 million systems around the world. Holden said the Trickbot operators have begun rebuilding their botnet, and continue to engage in deploying ransomware at new targets. “They are running normally and their ransomware operations are pretty much back in full swing,” Holden said. “They are not slowing down because they still have a great deal of stolen data.”

Holden added that since news of the disruption first broke a week ago, the Russian-speaking cybercriminals behind Trickbot have been discussing how to recoup their losses, and have been toying with the idea of massively increasing the amount of money demanded from future ransomware victims.