Attacks Targeting MS-SQL Servers Detected by AhnLab EDR
MS-SQL servers are one of the main attack vectors used when targeting Windows systems because they use simple passwords and are open publicly to the external Internet. Threat actors find poorly managed MS-SQL servers and scan them before carrying out brute force or dictionary attacks to log in with administrator
Statistical Report on Malware Targeting MS-SQL Servers in Q1 2024
Overview The ASEC analysis team uses the AhnLab Smart Defense (ASD) infrastructure to categorize and respond to attacks on vulnerable MS-SQL servers. This report will cover the current state of damage to MS-SQL servers which have become the target of attacks based on the logs discovered in Q1 2024,
Statistics Report on Malware Targeting MS-SQL in Q4 2023
Overview The ASEC analysis team uses the AhnLab Smart Defense (ASD) infrastructure to categorize and respond to attacks on vulnerable MS-SQL servers. This report will cover the current state of damage to MS-SQL servers which have become the target of attacks based on the logs discovered in Q4 2023,
Analysis of MS-SQL Server Proxyjacking Cases
AhnLab Security Emergency response Center (ASEC) has recently discovered cases of proxyjacking targeting poorly managed MS-SQL servers. Publicly accessible MS-SQL servers with simple passwords are one of the main attack vectors used when targeting Windows systems. Typically, threat actors target poorly managed MS-SQL servers and attempt to gain access through
Analysis of CLR SqlShell Used to Attack MS-SQL Servers
This blog post will analyze the CLR SqlShell malware that is being used to target MS-SQL servers. Similar to WebShell, which can be installed on web servers, SqlShell is a malware strain that supports various features after being installed on an MS-SQL server, such as executing commands from threat actors
Trigona Ransomware Attacking MS-SQL Servers
AhnLab Security Emergency response Center (ASEC) has recently discovered the Trigona ransomware being installed on poorly managed MS-SQL servers. Trigona is a relatively recent ransomware that was first discovered in October 2022, and Unit 42 has recently published a report based on the similarity between Trigona and the CryLock ransomware. [1]
Netcat Attack Cases Targeting MS-SQL Servers (LOLBins)
ASEC (AhnLab Security Emergency response Center) has recently discovered the distribution of the Netcat malware targeting poorly managed MS-SQL servers. Netcat is a utility that allows users to send and receive data from specific destinations on a network connected by the TCP/UDP protocol. Due to its various features and ability
Analysis on Attack Techniques and Cases Using RDP
Overview One of the previous ASEC blog posts discussed cases where attackers abused various remote control tools that are originally used for system management purposes to gain control over infected systems.[1] This post will cover cases where RDP (Remote Desktop Protocol), a default service provided by baseline Windows OS, was
Case of Attack Exploiting AnyDesk Remote Tool (Cobalt Strike and Meterpreter)
MS-SQL servers are mainly the attack targets for Windows systems. Attackers scan vulnerable MS-SQL servers that are poorly managed and install malware upon gaining control. Malware strains installed by attackers include CoinMiner, ransomware, backdoor, etc., and may vary depending on the purpose of the attack. Most backdoor strains are
Gh0stCringe RAT Being Distributed to Vulnerable Database Servers
The ASEC analysis team is constantly monitoring malware distributed to vulnerable database servers (MS-SQL, MySQL servers). This blog will explain the RAT malware named Gh0stCringe[1]. Gh0stCringe, also known as CirenegRAT, is one of the malware variants based on the code of Gh0st RAT. It was first discovered in December 2018,
