Ransomware

SystemBC Being Used by Various Attackers

SystemBC is a proxy malware that has been used by various attackers for the last few years. While it is recently distributed through SmokeLoader or Emotet, this malware has steadily been used in various ransomware attacks in the past. When an attacker attempts to access a certain address with malicious intent, the system can be used as a passage if the infected system utilizes SystemBC, which acts as a Proxy Bot. Because it can also act as a downloader to…

LockBit Ransomware Being Distributed Using Resume and Copyright-related Emails

The ASEC analysis team has recently discovered ransomware that is being distributed emails after disguising itself as resumes or copyright-related claims. The malicious emails with such content have been steadily distributed from the past. Unlike previous emails that distributed Makop ransomware, current cases have LockBit instead. Makop Ransomware Distributed As Copyright Violation Related Materials Makop Ransomware Disguised as Resume Being Distributed in Korea The emails that are confirmed for the distribution of malware have compressed files with passwords. As shown…

Change in Magniber Ransomware Vulnerability (CVE-2021-40444)

Magniber is a fileless ransomware using an IE vulnerability and it is one of the ransomware that causes damage to numerous Korean users. It is difficult to prevent infection if not detected and blocked in advance during the vulnerability occurrence phase, which makes it difficult for anti-malware programs to detect it. Magniber ransomware had been distributed since March 15th, 2021 using CVE-2021-26411 vulnerability up to recently, but on September 16th, it was discovered that it changed to CVE-2021-40444 vulnerability. This…

Makop Ransomware Disguised as Resume Being Distributed in Korea

The ASEC analysis team has recently confirmed that Makop ransomware disguised as a resume is being distributed to Korean users. Makop ransomware is malware that has continuously changed and been distributed since last year. It has been introduced in the previous ASEC blogs and it still takes the form of NSIS (Nullsoft Scriptable Install System). It appears that it disguised as a resume to target recruitment managers amidst the recruitment season of the companies. Given that this ransomware was distributed…