Lazarus (also known as Hidden Cobra) is known to use various kinds of malware in its attack operations, and we have introduced some of them in our past articles. In this article, we present two more; Torisma and LCPDot. Torisma overview Torisma downloads and executes modules from external servers, and its infection spreads via malicious Word files [1]. Torisma samples that JPCERT/CC has analysed are DLL files and executed as...
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It is widely known that attackers use Windows commands and tools that are commonly known and used after intruding their target network. Lazarus attack group, a.k.a. Hidden Cobra, also uses such tools to collect information and spread the infection. This blog post describes the tools they use. Lateral movement These three tools are used for lateral movement. AdFind collects the information of clients and users from Active Directory. It has...
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Quasar [1] is an open source RAT (Remote Administration Tool) with a variety of functions. This is easy to use and therefore exploited by several APT actors. JPCERT/CC has confirmed that a group called APT10 used this tool in some targeted attacks against Japanese organisations. As Quasar’s source code is publicly available, there are many variants of this RAT seen in the wild (referred to as “Quasar Family” hereafter). Some...
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Today on December 4, 2020, announcements regarding new CNAs (CVE Numbering Authority) were made from The MITRE Corporation and 2 vendors in Japan.The MITRE CorporationLINE Added as CVE Numbering Authority (CNA)Mitsubishi Electric Added as CVE Numbering Authority (CNA)LINE CorporationLINE becomes a CVE Numbering Authority (CNA)Mitsubishi Electric CorporationInitiatives Regarding Product Security｜MITSUBISHI ELECTRIC Global websiteFollowing the announcements, I will speak on CVE (Common Vulnerabilities and Exposures) and our activities related to it.CNAs'...
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In a past article, we introduced Linux malware ELF_TSCookie, which is used by an attack group BlackTech. This group also uses other kinds of malware that affects Linux OS. PLEAD module for Windows which we introduced before has its Linux version (ELF_PLEAD) as well. This article describe the details of ELF_PLEAD in comparison to PLEAD module. Comparison between PLEAD Module and ELF_PLEAD ELF_PLEAD and PLEAD module share many parts of...
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JPCERT/CC has released LogonTracer v1.5, the latest version of the event log analysis tool. While this tool was initially focused on post-incident investigation, we have received many requests for updates for the purpose of real-time log analysis. This time, we made some updates to enable such functions. This article will introduce the details of the update. Further information can be found at the following page: https://github.com/JPCERTCC/LogonTracer/releases/tag/v1.5.0 Support for Elasticsearch LogonTracer...
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In the previous article, we introduced one type of malware that Lazarus (also known as Hidden Cobra) uses after network intrusion. It is confirmed that this attack group uses multiple types of malware including BLINDINGCAN, which CISA recently introduced in its report [1]. This article summarises the result of our analysis on BLINDINGCAN. BLINDINGCAN overview The malware runs when a loader loads a DLL file. Figure 1 shows the flow...
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JPCERT/CC has observed attack activity by Lazarus (also known as Hidden Cobra) targeting Japanese organisations. Different types of malware are used during and after the intrusion. This article introduces one of the types of malware used after the intrusion. Malware Overview This malware downloads and executes modules. It is saved as a .drv file in a folder such as C:¥Windows¥System32¥ and run as a service. It is obfuscated by using...
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The Volatility Foundation released Volatility 3 Public Beta, a new version of Volatility Framework in October 2019. The version not only offers compatibility with Python 3 but also has a lot of functional updates from Volatility 2. (Please see Volatility 3's official page for more details.) Particularly, creating plugins is much easier with Volatility 3 compared to the previous version. Volatility 3’s official release is planned for August 2020, and...
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We introduced malware LODEINFO in a past blog entry. Attacks using the malware have been continuously seen, in particular with malicious file names including those related to COVID-19. It is also confirmed that LODEINFO has been updated frequently, and several functions have been added or changed in the latest version. This article will introduce trends seen in the series of attacks and updates to the malware. LODEINFO distribution Cases that...
