GuLoader Malware Disguised as a Word File Being Distributed in Korea Posted By jcleebobgatenet , October 21, 2022 The ASEC analysis team has discovered that the GuLoader malware is being distributed to Korean corporate users. GuLoader is a downloader that has been steadily distributed since the past, downloading various malware. The phishing mail being distributed is as follows, and has an HTML file attached. When the user opens the attached HTML file, a compressed file is downloaded from the URL below. The compressed file contains an IMG file and the GuLoader malware is inside this IMG file. GuLoader…
Attackers Abusing Various Remote Control Tools Posted By Sanseo , October 21, 2022 Overview Ordinarily, attackers install malware through various methods such as spear phishing emails with a malicious attachment, malvertising, vulnerabilities, and disguising the malware as normal software and uploading them to websites. The malware that is installed include infostealers which steal information from the infected system, ransomware which encrypts files to demand ransom, and DDoS Bots which are used in DDoS attacks. In addition to these, backdoor and RAT are also major malware programs used by attackers. Backdoor malware is installed…
ASEC Weekly Malware Statistics (October 3rd, 2022 – October 9th, 2022) Posted By jcleebobgatenet , October 19, 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 October 3rd, 2022 (Monday) to October 9th, 2022 (Sunday). For the main category, downloader ranked top with 45.0%, followed by info-stealer with 39.6%, backdoor with 14.6%, ransomware with 0.4%, and CoinMiner with 0.4%. Top1. SmokeLoader Smokeloader is infostealer / downloader malware that is distributed via exploit kits. This week, it ranked first place…
Lazarus Group Uses the DLL Side-Loading Technique (mi.dll) Posted By jcleebobgatenet , October 12, 2022 While tracking the Lazarus attack group, the ASEC analysis team discovered that the attackers were using the DLL Side-Loading attack technique (T1574.002) by abusing legitimate applications in the initial compromise stage to achieve the next stage of their attack process. https://attack.mitre.org/techniques/T1574/002/ The DLL Side-Loading attack technique saves a legitimate application and a malicious DLL in the same folder path to enable the malicious DLL to also be executed when the application is run. In other words, it is a malware…
GlobeImposter Ransomware Being Distributed in Korea Posted By jcleebobgatenet , October 12, 2022 The ASEC analysis team has recently identified through internal monitoring that the GlobeImposter ransomware, which targets vulnerable MS-SQL servers, is being distributed. This GlobeImposter ransomware has also been mentioned in AhnLab TIP’s quarterly statistics, specifically in the ‘2022 1st and 2nd Quarter Statistical Report on Malware Targeting MS-SQL,’ and in the 2nd quarter, GlobeImposter took up 52.6% of ransomware targeting MS-SQL. It has been identified that the GlobeImposter ransomware is still appearing in the soon-to-be-released 3rd quarter statistics. This ransomware…
