Malicious Word Document Being Distributed in Disguise of a News Survey Posted By jcleebobgatenet , November 25, 2022 The ASEC analysis team discovered that the Word document type identified in the blog, ‘Malicious Word Files Targeting Specific Individuals Related to North Korea,’ has recently been using FTP to leak user credentials. The filename of the identified Word document is ‘CNA[Q].doc’, disguised as a CNA Singaporean TV program interview. The file is password-protected and is deemed to be distributed as an attachment in emails alongside the password. The identified Word file contains information related to North Korea like the…
Wiki Ransomware Being Distributed in Korea Posted By jcleebobgatenet , November 25, 2022 Through the AhnLab ASD infrastructure’s history of blocking suspicious ransomware behavior, the ASEC analysis team has identified the distribution of Wiki ransomware, which has been determined to be a variant of Crysis ransomware, disguised as a normal program. Before performing the actual encryption, Wiki ransomware copies itself into the %AppData% or %windir%\system32 paths and undergoes a process of increasing the infection success rate of the ransomware by adding itself to the registry (HKLM\Software\Microsoft\Windows\CurrentVersion\Run) to be registered as one of the…
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…
