Chinese Cloud Hopper Attackers Use Zerologon at New Campaign

Chinese state-sponsored attackers are working a significant worldwide campaign against several verticals harnessing the Zerologon vulnerability, based on a new study from Symantec.

APT10 is well known to investigators, having been unmasked as the thing behind the notorious Cloud Hopper effort against international MSPs back in 2017 — in the time branded” among the biggest ever-continuing global cyber-espionage campaigns”

The present campaign is thought to have been continuing since October 2019, with attackers preserving persistence on a few of their victims’ networks for a calendar year, although for many others the strikes lasted only days.

Symantec was initially alerted to the effort as it detected suspicious DLL side-loading action among its client’s networks. The technique was utilized by APT10 during several phases of strikes to load malware to valid procedures, the report asserted.

Other classic methods utilized by the team include”living from the land” using valid Windows purposes like PowerShell, double use and publicly accessible tools such as WMIExec, and malware such as the recently discovered Backdoor. Hartip.

The team has been also found exploiting the Zerologon elevation-of-privilege insect patched back in August, to hijack a domain name to undermine all Active Directory identity providers.

“Intelligence gathering and stealing data has normally been the motive behind Cicada’s strikes before, which might seem to be true in this assault effort also.

We noticed that the attackers archiving several folders of attention in these types of attacks, such as in 1 organization folders concerning human resources, audit and expenditure information, and fulfilling memos,” the report mentioned.

“The team’s use of techniques like DLL side-loading and a broad collection of living-off-the-land tools underscores the need for associations to have a comprehensive security solution in place to discover this sort of suspicious activity before celebrities such as Cicada have the opportunity to deploy malware or steal data in their networks.”

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