ASEC Weekly Malware Statistics (November 21st, 2022 – November 27th, 2022) Posted By jcleebobgatenet , December 2, 2022 The ASEC analysis team is using the ASEC automatic analysis system RAPIT to categorize and respond to known malware. This post will list weekly statistics collected from November 21st, 2022 (Monday) to November 27th (Sunday). For the main category, downloader ranked top with 40.3%, followed by Infostealer with 35.8%, backdoor with 16.3%, ransomware with 7.2%, and CoinMiner with 0.4%. Top 1 – AgentTesla AgentTesla is an Infostealer that ranked first place with 17.3%. It leaks user credentials saved in web…
Koxic Ransomware Being Distributed in Korea Posted By jcleebobgatenet , November 25, 2022 It has been discovered that Koxic ransomware is being distributed in Korea. It was first identified earlier this year, and recently, the team found that a file with a modified appearance and internal ransom note had been detected and blocked via the ASD infrastructure. When infected, the “.KOXIC_[random string]” extension is added to the names of the encrypted files, and a TXT file ransom note is generated in each directory. The filename of the ransom note is as follows. The…
ASEC Weekly Malware Statistics (November 7th, 2022 – November 13th, 2022) Posted By jcleebobgatenet , November 16, 2022 The ASEC analysis team is using the ASEC automatic analysis system RAPIT to categorize and respond to known malware. This post will list weekly statistics collected from November 7th, 2022 (Monday) to November 13th (Sunday). For the main category, downloader ranked top with 37.8%, followed by Infostealer with 27.1%, banking malware with 22.9%, backdoor with 11.2%, ransomware with 0.5%, and CoinMiner with 0.5%. Top 1 – Emotet Emotet which has resurfaced after six months ranked first place with 22.9%. Emotet…
DAGON LOCKER Ransomware Being Distributed Posted By jcleebobgatenet , November 16, 2022 It was discovered that the DAGON LOCKER ransomware (hereinafter referred to as “DAGON”) is being distributed in Korea. It was first found through AhnLab ASD infrastructure’s suspicious ransomware behavior block history. In October, it was also reported to AhnLab as a suspicious file by a Korean organization. DAGON is commonly distributed through phishing mails or as an attachment to emails, but because it is a ransomware-as-a-service, the distribution route and target can vary according to the threat actor. As the…
A Dropper-Type Malware Bomb Being Distributed Again in the Disguise of Cracks Posted By jcleebobgatenet , November 14, 2022 The dropper malware which camouflaged itself as a crack is being actively distributed again after a period of dormancy. When this malware is executed, the affected system becomes infected with numerous malware programs simultaneously. This is effectively a malware “bomb.” Malware disguised as cracks for commercial software have been prevalent, which were either distributed in a “singular malware” format or “dropper malware” format. The ASEC analysis team is closely monitoring such malware distribution activities and has covered them multiple times…
