• How to Describe Vulnerability Information? Vulnerability
    How to Describe Vulnerability Information?
    Today, I would like to introduce an activity at the Vulnerability Coordination Group of JPCERT/CC.It is a method to describe a vulnerability using Vulnerability Description Ontology (VDO). JPCERT/CC receives software vulnerability information from domestic and overseas reporters, then coordinates them in between the vendor/developer and the reporter. While there is a vulnerability reporting template, vulnerability itself is described in a free format. Reporter can describe about a vulnerability in a...

    Read more

  • JPCERT/CC Publishes "Vulnerability Coordination and Disclosure Policy" Vulnerability
    JPCERT/CC Publishes "Vulnerability Coordination and Disclosure Policy"
    JPCERT/CC has been coordinating and disclosing software vulnerabilities under the "Information Security Early Warning Partnership" since 2004. We have coordinated and disclosed over 1,500 vulnerabilities with developers as of the end of 2017. The "Information Security Early Warning Partnership" has a guideline that serves as a framework for how vulnerabilities are coordinated within Japan. An overview of the framework including how reported vulnerabilities are coordinated and disclosed is provided at...

    Read more

  • Malware “TSCookie” Malware
    Malware “TSCookie”
    Around 17 January 2018, there were some reports on the social media about malicious emails purporting to be from Ministry of Education, Culture, Sports, Science and Technology of Japan [1]. This email contains a URL leading to a malware called “TSCookie”. (Trend Micro calls it “PLEAD” malware [2]. Since PLEAD is also referred to as an attack campaign, we call this malware TSCookie in this article.) TSCookie has been observed...

    Read more

  • Identify Mirai Variant Infected Devices from SSDP Response
    Identify Mirai Variant Infected Devices from SSDP Response
    As it has been discussed in some reports from security researchers, devices infected with Mirai and its variants are forming large-scale botnets, which are often leveraged as a platform for attacks such as DDoS and other malicious activities. JPCERT/CC has been conducting investigation and analysis of infection activities caused by Mirai variants from 2016 and providing measures to prevent further infection both in Japan and overseas. At the end of...

    Read more

  • Investigate Unauthorised Logon Attempts using LogonTracer Forensic
    Investigate Unauthorised Logon Attempts using LogonTracer
    In the recent article, we introduced the concept and the use of "LogonTracer", a tool to support Windows event log analysis. This article presents how unauthorised logon attempts can be identified using this tool. Please refer to the Wiki for LogonTracer installation. Points for Investigation LogonTracer serves as a tool to support the log analysis rather than to detect unauthorised logon itself. For an effective investigation using this tool, we...

    Read more

  • Research Report Released: Detecting Lateral Movement through Tracking Event Logs (Version 2) Forensic
    Research Report Released: Detecting Lateral Movement through Tracking Event Logs (Version 2)
    In June 2017, JPCERT/CC released a report “Detecting Lateral Movement through Tracking Event Logs” on tools and commands that are likely used by attackers in lateral movement, and traces that are left on Windows OS as a result of such tool/command execution. After the release, we received a lot of feedback on the report, and until now we had been working on the revision based on the comments. Today, we...

    Read more

  • Visualise Event Logs to Identify Compromised Accounts - LogonTracer - Forensic
    Visualise Event Logs to Identify Compromised Accounts - LogonTracer -
    Hello again, this is Shusei Tomonaga from the Analysis Center. Event log analysis is a key element in security incident investigation. If a network is managed by Active Directory (hereafter, AD), can be identified by analysing AD event logs. For such investigation, it is quite difficult to conduct detailed analysis in AD event viewer; it is rather common to export the logs to text format or import them into SIEM/log...

    Read more

  • Chase up Datper’s Communication Logs with Splunk/Elastic Stack Incident
    Chase up Datper’s Communication Logs with Splunk/Elastic Stack
    The last article introduced some features of Datper malware and a Python script for detecting its distinctive communication. Based on that, we are presenting how to search proxy logs for Datper’s communication using log management tools – Splunk and Elastic Stack (Elasticsearch, Logstash and Kibana). For Splunk To extract Datper’s communication log using Splunk, the first thing you need to do is to create a custom search command as follows....

    Read more

  • Detecting Datper Malware from Proxy Logs Malware
    Detecting Datper Malware from Proxy Logs
    This is Yu Nakamura from Analysis Center. This entry is to explain features of Datper, malware used for targeted attacks against Japanese organisations and how to detect it from the logs. JPCERT/CC has been observing attacks using Datper since around June 2016. Research reports on the adversary are published from LAC [1], SecureWorks [2] and Palo Alto Networks [3]. The adversary had also conducted attacks using Daserf malware in the...

    Read more

  • What the Avalanche Botnet Takedown Revealed: Banking Trojan Infection in Japan Malware
    What the Avalanche Botnet Takedown Revealed: Banking Trojan Infection in Japan
    Internet banking services across the globe have been exposed to the threat by unauthorized money transfers and suffering large-scale losses. In this landscape, an operation led by international law enforcement agencies has been in effect since November 2016 to capture criminal groups conducting unauthorised online banking transfers and dismantle the attack infrastructure (the Avalanche botnet). JPCERT/CC is one of the many supporters of this operation. For more information about the...

    Read more