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Blog.webp 2023-03-23 01:50:00 AVERTISSEMENT POUR LE PROGRAMME DE GESTION D'ACTIF [Warning for Asset Management Program (TCO!Stream) Vulnerability and Update Recommendation] (lien direct) logiciel vulnérable et aperçu TCO! Stream est une solution de gestion des actifs développée par la société coréenne, MLSoft.Composé d'un serveur et d'un client, les administrateurs peuvent utiliser le programme de console pour effectuer des travaux de gestion des actifs en accédant au serveur.TCO! Stream offre diverses fonctionnalités pour la gestion des actifs, mais il existe un processus qui s'exécute constamment sur le client afin de recevoir des commandes du serveur.Les commandes sont effectuées via ce processus.Cette solution de gestion est exposée à des attaques de vulnérabilité qui pourraient ...
Vulnerable Software and Overview TCO!Stream is an asset management solution developed by the Korean company, MLsoft. Consisting of a server and a client, administrators can use the console program to perform asset management work by accessing the server. TCO!Stream offers various features for asset management, but there is a process that runs constantly on the client in order to receive commands from the server. Commands are performed through this process. This management solution is exposed to vulnerability attacks that could... 		General Information Vulnerability ★★
Blog.webp 2023-03-23 00:20:00 Avertissement pour la solution de certification (VESTCERT) Vulnérabilité et recommandation de mise à jour [Warning for Certification Solution (VestCert) Vulnerability and Update Recommendation] (lien direct) logiciel vulnérable et aperçu Vestcert est un programme de certification utilisé lors de l'accès aux sites Web, et est un module non actifxDéveloppé par la société coréenne, YETTIESOFT. & # 160; Ce programme est enregistré en tant que programme de démarrage et sera relancé par le service de Yettiesoft (Gozi) même s'il est résilié.Il reste constamment actif en tant que processus une fois qu'il est installé, il peut donc être exposé à des attaques de vulnérabilité. & # 160; Ainsi, il doit être mis à jour vers la dernière version.Description de la vulnérabilité Cette vulnérabilité était la première ...
Vulnerable Software and Overview VestCert is a certification program used while accessing websites, and is a non-ActiveX module developed by the Korean company, Yettiesoft. This program is registered as a Startup Program and will be relaunched by Yettiesoft’s service (Gozi) even if it is terminated. It remains constantly active as a process once it is installed, so it can be exposed to vulnerability attacks. Thus, it needs to be updated to the latest version. Description of the Vulnerability This vulnerability was first... 		General Information Vulnerability ★★
Blog.webp 2023-03-09 00:00:00 PlugX Malware Being Distributed via Vulnerability Exploitation (lien direct) The ASEC (AhnLab Security Emergency response Center) has recently discovered the installation of the PlugX malware through the Chinese remote control programs Sunlogin and Awesun’s remote code execution vulnerability. Sunlogin’s remote code execution vulnerability (CNVD-2022-10270 / CNVD-2022-03672) is still being used for attacks even now ever since its exploit code was disclosed. The team previously made a post about how Sliver C2, XMRig CoinMiner, and Gh0st RAT were being distributed through the Sunlogin RCE vulnerability. Additionally, since Gh0st RAT was... Malware Vulnerability ★★★
Blog.webp 2023-03-06 23:30:00 Lazarus Group Attack Case Using Vulnerability of Certificate Software Commonly Used by Public Institutions and Universities (lien direct) Since two years ago (March 2021), the Lazarus group’s malware strains have been found in various Korean companies related to national defense, satellites, software, media press, etc. As such, ASEC (AhnLab Security Emergency Response Center) has been pursuing and analyzing the Lazarus threat group’s activities and related malware.  The affected company in this case had been infiltrated by the Lazarus group in May 2022 and was re-infiltrated recently through the same software’s 0-Day vulnerability. During the infiltration in May 2022,... Threat Malware Vulnerability Medical APT 38 ★★★
Blog.webp 2023-02-23 23:10:00 Magniber Ransomware\'s Relaunch Technique (lien direct) ASEC (AhnLab Security Emergency Response Center) has been constantly monitoring the Magniber ransomware which has been displaying a high number of distribution cases. It has been distributed through the IE (Internet Explorer) vulnerability for the past few years, but stopped exploiting the vulnerability after the support for the browser ended. Recently, the ransomware is distributed as a Windows installer package file (.msi) in Edge and Chrome browsers. There have been recent reports of systems being reinfected by Magniber. Analysis revealed... Ransomware Vulnerability ★★
Blog.webp 2023-02-23 00:00:00 Distribution of Malware Exploiting Vulnerable Innorix: Andariel (lien direct) The ASEC (AhnLab Security Emergency response Center) analysis team has discovered the distribution of malware targeting users with vulnerable versions of Innorix Agent. The collected malware is a backdoor that attempts to connect to a C&C server. The exploited Innorix Agent is a file transfer solution client. Details about the vulnerability were posted by the Korea Internet & Security Agency (KISA)[1] where the INNORIX Agent versions that required the security updates were identified as version 9.2.18.450 and an earlier version,... Malware Vulnerability ★★
Blog.webp 2023-02-21 01:00:00 HWP Malware Using the Steganography Technique: RedEyes (ScarCruft) (lien direct) In January, the ASEC (AhnLab Security Emergency response Center) analysis team discovered that the RedEyes threat group (also known as APT37, ScarCruft) had been distributing malware by exploiting the HWP EPS (Encapsulated PostScript) vulnerability (CVE-2017-8291). This report will share the RedEyes group’s latest activity in Korea. 1. Overview The RedEyes group is known for targeting specific individuals and not corporations, stealing not only personal PC information but also the mobile phone data of their targets. A distinct characteristic of the... Threat Malware Cloud Vulnerability APT 37 ★★★
Blog.webp 2023-02-15 00:00:00 Paradise Ransomware Distributed Through AweSun Vulnerability Exploitation (lien direct) The ASEC analysis team has recently discovered the distribution of Paradise ransomware. The threat actors are suspected to be utilizing a vulnerability exploitation of the Chinese remote control program AweSun. In the past, the team also found and covered the distribution of Sliver C2 and BYOVD through a Sunlogin vulnerability, a remote control program developed in China. 1. AweSun Vulnerability Exploitation The installation of Sliver C2 through the AweSun remote control program developed by AweRay was also discovered to have... Threat Ransomware Vulnerability ★★
Blog.webp 2023-02-06 01:00:00 Sliver Malware With BYOVD Distributed Through Sunlogin Vulnerability Exploitations (lien direct) Sliver is an open-source penetration testing tool developed in the Go programming language. Cobalt Strike and Metasploit are major examples of penetration testing tools used by many threat actors, and various attack cases involving these tools have been covered here on the ASEC blog. Recently, there have been cases of threat actors using Sliver in addition to Cobalt Strike and Metasploit. The ASEC (AhnLab Security Emergency response Center) analysis team is monitoring attacks against systems with either unpatched vulnerabilities or... Threat Malware Tool Vulnerability ★★
Blog.webp 2022-12-15 06:04:55 Caution! Magniber Ransomware Restarts Its Propagation on December 9th With COVID-19 Related Filenames (lien direct) On December 9th, 2022, the ASEC analysis team discovered that Magniber Ransomware is being distributed again. During the peak of the COVID-19 outbreak, Magniber was found being distributed with COVID-19 related filenames alongside the previous security update related filenames. C:\Users\$USERS\Downloads\COVID.Warning.Readme.2f4a204180a70de60e674426ee79673f.msiC:\Users\$USERS\Downloads\COVID.Warning.Readme.502ef18830aa097b6dd414d3c3edd5fb.msiC:\Users\$USERS\Downloads\COVID.Warning.Readme.a179a9245f8e13f41d799e775b71fdff.msi Table 1. COVID-19 related filenames in circulation In the past, Magniber exploited Internet Explorer’s vulnerability to infect user PCs via Drive by Download which only required users to visit a web page. However, after Microsoft stopped supporting Internet Explorer, Magniber’s... Ransomware Vulnerability ★★★
Blog.webp 2022-10-31 01:57:31 A Case of Malware Infection by the Lazarus Attack Group Disabling Anti-Malware Programs With the BYOVD Technique (lien direct) In the ASEC blog post uploaded on April 2022 (New Malware of Lazarus Threat Actor Group Exploiting INITECH Process, https://asec.ahnlab.com/en/33801/), the team discussed the fact that the Lazarus attack group had been exploiting the INITECH process to infect systems with malware.  This article aims to cover the details of the Lazarus group using the watering hole technique to hack into systems before exploiting the vulnerability of the MagicLine4NX product from Dream Security in order to additionally hack into systems in... Threat Malware Hack Vulnerability Medical APT 38
Blog.webp 2022-10-26 23:59:32 CoinMiner Being Installed on Vulnerable Apache Tomcat Web Server (lien direct) The ASEC analysis team has recently identified attacks targeting vulnerable Apache Tomcat web server. The Tomcat server that has not been updated to the latest version is one of the major attack vectors that exploit vulnerabilities. In the past, the ASEC blog has also covered attacks targeting Apache Tomcat servers with the vulnerable JBoss version installed. The attackers used JexBoss, a vulnerability exploitation tool, to install a WebShell before gaining control over the target system with the Meterpreter malware. Ordinarily,... Vulnerability
Blog.webp 2022-09-05 03:51:49 HWP File Disguised as Personal Profile Form (OLE Object) (lien direct) The ASEC analysis team has recently identified a malicious HWP file that exploits OLE objects and flash vulnerabilities. The file uses a malicious URL identified in 2020. This URL contains a flash vulnerability (CVE-2018-15982) file, which requires users to take caution. The identified HWP file includes OLE objects, and the corresponding files are generated in the %TEMP% folder when the HWP file is opened. The created files are shown below. The HWP file does not directly use previously known files... Vulnerability
Blog.webp 2022-07-25 05:21:11 Change in Magniber Ransomware (*.msi → *.cpl) – July 20th (lien direct) Since February 2022, Magniber has been using a Windows installer package file (.msi) instead of IE browser vulnerability for its distribution. The ransomware includes a valid certificate and was distributed as DLL form inside the MSI file. However, starting from July 20th (Wednesday), it is now being distributed as a CPL file extension instead of MSI. As the cases of using an MSI file for distribution are decreasing, the attacker of Magniber likely has changed the method of distribution. (July... Ransomware Vulnerability
Blog.webp 2022-07-20 23:41:12 Change in Injection Method of Magniber Ransomware (lien direct) The ASEC analysis team is constantly monitoring Magniber, which has a higher number of distribution cases. It has been distributed through the IE (Internet Explorer) vulnerability for the past few years but stopped exploiting the vulnerability after the support for the browser ended. Recently, the ransomware is distributed as a Windows installer package file (.msi) on Edge and Chrome browsers. Magniber, which is being distributed as Windows installation package file (.msi), has hundreds of distribution logs reported every day (see... Ransomware Vulnerability
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