ASEC Weekly Malware Statistics (January 16th, 2023 – January 22nd, 2023)
The ASEC analysis team uses the ASEC automatic analysis system RAPIT to categorize and respond to known malware. This post will list weekly statistics collected from January 16th, 2022 (Monday) to January 22nd, 2023 (Sunday). For the main category, Infostealer ranked top with 43.0%, followed by downloader with 30.06%, backdoor
ASEC Weekly Phishing Email Threat Trends (January 15th, 2023 – January 21st, 2023)
The ASEC analysis team monitors phishing email threats with the ASEC automatic sample analysis system (RAPIT) and honeypot. This post will cover the cases of distribution of phishing emails during the week from January 15th, 2023 to January 21st, 2023 and provide statistical information on each type. Generally, phishing is
ASEC Weekly Malware Statistics (January 9th, 2023 – January 15th, 2023)
The ASEC analysis team uses the ASEC automatic analysis system RAPIT to categorize and respond to known malware. This post will list weekly statistics collected from January 9th, 2023 (Monday) to January 15th, 2023 (Sunday). For the main category, downloader ranked top with 38.4%, followed by Infostealer with 37.0%, backdoor
ASEC Weekly Phishing Email Threat Trends (January 8th, 2023 – January 14th, 2023)
The ASEC analysis team monitors phishing email threats with the ASEC automatic sample analysis system (RAPIT) and honeypot. This post will cover the cases of distribution of phishing emails during the week from January 8th, 2023 to January 14th, 2023 and provide statistical information on each type. Generally, phishing is
Phishing Emails in Circulation, This Time Disguised as Requests for Product Quotation
The ASEC analysis team has recently been monitoring phishing emails with content related to requests for product quotations. These phishing emails are all disguised to seem as if they were sent by a manager with a high position, such as the team leader or department director of production companies or
TZW Ransomware Being Distributed in Korea
Through internal monitoring, the ASEC analysis team recently discovered the distribution of the TZW ransomware, which encrypts files before adding the “TZW” file extension to the original extension. This ransomware is being propagated with the version info marked as “System Boot Info”, disguising itself as a normal program file related
Malicious LNK File Disguised as a Normal HWP Document
The ASEC analysis team discovered the distribution of a malicious LNK file disguised as a normal HWP document, Along with a text file impersonating the National Tax Service. A normal HWP document with related contents is opened simultaneously, making it difficult for users to realize the file is rogue. The
Attack Cases of CoinMiners Mining Ethereum Classic Coins
The ASEC analysis team is monitoring CoinMiners that are targeting Korean and overseas users. We have covered cases of various types of CoinMiner attacks over multiple blog posts in the past. This post aims to introduce the recently discovered malware that mine Ethereum Classic coins. 0. Overview CoinMiners are installed
A Phishing Page that Changes According to the User’s Email Address (Using Favicon)
The ASEC analysis team continuously monitors phishing emails, and we have been detecting multiple phishing emails that are distributed with a changing icon to reflect the mail account service entered by the user. The following is an email distributed on January 16, 2023, warning users that their account will be
ASEC Weekly Malware Statistics (January 2nd, 2023 – January 8th, 2023)
The ASEC analysis team uses the ASEC automatic analysis system RAPIT to categorize and respond to known malware. This post will list weekly statistics collected from January 2nd, 2023 (Monday) to January 8th, 2023 (Sunday). For the main category, downloader ranked top with 55.9%, followed by Infostealer with 21.3%, backdoor
