It has been observed that ELF malware removes symbol information during its build. This creates extra work in malware analysis to identify each function name because you do not know them. In addition, in IDA, an analysis tool, existing F.L.I.R.T signatures [1] (hereafter abbreviated as FLIRT signatures in this article) are often not applicable to ELF malware functions, making analysis difficult when right signatures are not found. This blog article...
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JPCERT/CC has confirmed attacks that infected routers in Japan with malware around February 2023. This blog article explains the details of the attack confirmed by JPCERT/CC and GobRAT malware, which was used in the attack. Attack flow up to malware execution Initially, the attacker targets a router whose WEBUI is open to the public, executes scripts possibly by using vulnerabilities, and finally infects the GobRAT. Figure 1 shows the flow...
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JPCERT/CC has observed attacks on cryptocurrency exchanges believed to be related to DangerousPassword attack campaign (also known as CryptoMimic or SnatchCrypto) continuously since June 2019. For many years, attackers have been using an attack technique of infecting targets with malware by sending shortcut files to them via email. However, it is known that they also use various other patterns of attacks to infect the targets with malware. This article will...
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JPCERT/CC held ICS Security Conference 2023 on February 9, 2023. The purpose of the conference is to share the current status of threats in ICS both in Japan and abroad as well as efforts by ICS security stakeholders. It also aims to help participants improve their ICS security measures and establish best practices. The conference has been held annually since 2009, and this year’s was the 15th conference.This is the...
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Around February 2023, JPCERT/CC identified an attack that attempted to infect a crypto asset exchanger with the Parallax RAT malware. This attack attempted to infect employees of the crypto asset exchanger with malware by sending spam emails. This article presents the details of this attack.Flow of events leading to Parallax RAT infectionFigure 1 shows the flow of this attack. The identified attack starts with a spam email, which urges the...
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We continue to introduce the talks at JSAC2023. This third issue covers the workshops on Day 2. Surviving the hurt locker: or How I Learned to Stop Worrying and Love the Bom Speakers: Simon Vestin, Manabu Niseki (LINE) Simon and Manabu explained the SBOM (Software Bill of Materials) and gave a hands-on session on creating a program to generate one. SBOM is a list of software or system components. They...
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This article reports on JSAC Day 2, following the previous article about Day1. How Do We Fight against Evolving Go Language Malware? Practical Techniques to Increase Analytical Skills Speakers: Tsubasa Kuwabara (FFRI Security Inc.) Slides (English) Tsubasa presented the current situation and problems of Go language malware, which has been increasing in recent years, and explained basic and advanced analysis techniques. He explained that Go malware was easy to write...
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What is ITU-T X.1060? X.1060 Framework for the creation and operation of a cyber defence centre［1］is a recommendation document approved by ITU-T, the United Nations specialized agency for information and communication technologies. It defines a cyber security framework which can be used as a reference by a wide range of organisations, regardless of their sizes or industries. The document illustrates a blueprint for Cyber Defence Centre (hereafter CDC), an entity...
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JPCERT/CC held JSAC2023 on January 25 and 26, 2023. The purpose of this conference is to raise the knowledge and technical level of security analysts in Japan, and we aimed to bring them together in one place where they can share technical knowledge related to incident analysis and response. This year was the sixth time the conference was held, and 12 presentations, 2 workshops, and 7 lightning talks were presented...
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This TSUBAME Report Overflow series discuss monitoring trends of overseas TSUBAME sensors and other activities which the Internet Threat Monitoring Quarterly Reports does not include. This article covers the monitoring results for the period of October to December 2022. The scan trends observed with TSUBAME sensors in Japan are presented in graphs here. Changes in Mirai-type packets in Japan (Top 5 source regions) Figure 1 shows a daily graph of...
