From securityaffairs.com
A malware campaign has been exploiting the updating mechanism of the eScan antivirus to distribute backdoors and cryptocurrency miners.
Avast researchers discovered and analyzed a malware campaign that exploited the update mechanism of the eScan antivirus to distribute backdoors and crypto miners.
Threat actors employed two different types of backdoors and targeted large corporate networks
The researchers believe the campaign could be attributed to North Korea-linked AP Kimsuky. The final payload distributed by GuptiMiner was also XMRig.
“GuptiMiner is a highly sophisticated threat that uses an interesting infection chain along with a couple of techniques that include performing DNS requests to the attacker’s DNS servers, performing sideloading, extracting payloads from innocent-looking images, signing its payloads with a custom trusted root anchor certification authority, among others.” reads the analysis published by Avast. “The main objective of GuptiMiner is to distribute backdoors within big corporate networks.”