In a past article in September 2018, we introduced a Sysmon log analysis tool "SysmonSearch" and its functions. Today, we will demonstrate how this tool can be used for incident investigation by showing some examples. To install SysmonSearch, please see the following page: JPCERTCC GitHub · SysmonSearch Wiki https://github.com/JPCERTCC/SysmonSearch/wiki The case study was conducted in the following environment: Sysmon 7.0.1 ElasticSearch 6.2.2 Kibana 6.2.2 Winlogbeat 6.2.2 Browser: Firefox Example of...
List of “JPCERT/CC”
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Hello, I am Katsuhiro Mori from Cyber Metrics Line, Global Coordination Division. JPCERT/CC released ”Mejiro” (Internet risk visualisation service) English website in August 2018. This web service collects publicly available risk data on risk factors existing on the Internet and provides index for each economy. To promote the use of this tool service and cyber space clean-up activities, I went to Mongolia and Indonesia recently. What is Mongolia like? When...
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In recent sophisticated cyber attacks, it is common to observe lateral movement, where a malware- infected device is used as a stepping stone and further compromise other devices in the network. In order to investigate the compromised devices, it is necessary to retain detailed logs of the applications that run on the device on a daily basis. One of the well-known tools for this purpose is Sysmon [1] from Microsoft,...
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JPCERT/CC has observed some Japanese organisations being affected by cyber attacks leveraging “Cobalt Strike” since around July 2017. It is a commercial product that simulates targeted attacks [1], often used for incident handling exercises, and likewise it is an easy-to-use tool for attackers. Reports from LAC [2] and FireEye [3] describe details on Cobalt Strike and actors who conduct attacks using this tool. Cobalt Strike is delivered via a decoy...
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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...
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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...
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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...
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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....
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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...
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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...