List of “Incident”

  • Lazarus Attack Activities Targeting Japan (VSingle/ValeforBeta) Incident
    Lazarus Attack Activities Targeting Japan (VSingle/ValeforBeta)
    The attack group Lazarus (also known as Hidden Cobra) conducts various attack operations. This article introduces malware (VSingle and ValeforBeta) and tools used in attacks against Japanese organisations. VSingle overview VSingle is a HTTP bot which executes arbitrary code from a remote network. It also downloads and executes plugins. Once launched, this malware runs Explorer and executes its main code through DLL injection. (Some samples do not perform DLL injection.)...

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  • Emotet Disruption and Outreach to Affected Users Incident
    Emotet Disruption and Outreach to Affected Users
    Since October 2019, many cases of Emotet infection were reported. JPCERT/CC has published a security alert and a blog article detailing the detection and security measures, as well as providing notification and support for affected users. Europol announced that Emotet infrastructure was disrupted thanks to the joint operation together with some foreign authorities in January 2021 and information regarding affected users is to be distributed via the CERT network. In...

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  • Commonly Known Tools Used by Lazarus Incident
    Commonly Known Tools Used by Lazarus
    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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  • Attacks Simultaneously Exploiting Vulnerability in IE (CVE-2020-0674) and Firefox (CVE-2019-17026) Incident
    Attacks Simultaneously Exploiting Vulnerability in IE (CVE-2020-0674) and Firefox (CVE-2019-17026)
    On 8 January 2020, Mozilla released an advisory regarding a vulnerability in Firefox. On 17 January, Microsoft reported that 0-day attacks exploiting a vulnerability in Internet Explorer (IE) had been seen in the wild. JPCERT/CC confirmed attacks exploiting both vulnerabilities at once and issued a security alert. This article explains the details of these attacks. Attack overview In this attack, victims are redirected to an attack site through a compromised...

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  • Attacks Exploiting Vulnerabilities in Pulse Connect Secure Incident
    Attacks Exploiting Vulnerabilities in Pulse Connect Secure
    In September 2019, JPCERT/CC published a security alert regarding vulnerabilities in multiple SSL-VPN products. Among the vulnerabilities pointed out in the alert, JPCERT/CC has been notified of cases leveraging CVE-2019-11510 and CVE-2019-11539 in Pulse Connect Secure in attacks against Japanese organisations. This activity seems to continue up until now according to some media reports. As many companies encourage employees to “work from home” in the current situation, use of VPN...

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  • How to Respond to Emotet Infection (FAQ) Incident
    How to Respond to Emotet Infection (FAQ)
    Since October 2019, there has been a growing number of Emotet infection cases in Japan. JPCERT/CC issued a security alert as follows: Alert Regarding Emotet Malware Infectionhttps://www.jpcert.or.jp/english/at/2019/at190044.html The purpose of this entry is to provide instructions on how to check if you are infected with Emotet and what you can do in case of infection (based on the information available as of December 2019). If you are not familiar with...

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  • 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....

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  • 2016 in Review: Top Cyber Security Trends in Japan Incident
    2016 in Review: Top Cyber Security Trends in Japan
    Hi, this is Misaki Kimura from Watch and Warning Group. Another new year has come and gone, and as I look back over about the significant security trends that took place in 2016, it is needless to mention that security threat landscape is ever evolving and increasingly complex. As a basis for what we can prepare for 2017, I’d like to review security headlines in 2016 by referring to the...

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  • PHP Files in CMS, Targeted for Alteration Incident
    PHP Files in CMS, Targeted for Alteration
    JPCERT/CC has been continuously observing cases where websites in Japan created with Content Management Systems (hereafter “CMS”) are defaced in a similar way, and the same kind of cases are also observed overseas [1], [2]. In these cases, part of the PHP files composing the CMS are altered, and this results in defacement of the website contents [3]. Based on the analysis of several cases, this entry today describes the...

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  • Windows Commands Abused by Attackers Incident
    Windows Commands Abused by Attackers
    Hello again, this is Shusei Tomonaga from the Analysis Center. In Windows OS, various commands (hereafter “Windows commands”) are installed by default. However, what is actually used by general users is just a small part of it. On the other hand, JPCERT/CC has observed that attackers intruding into a network also use Windows commands in order to collect information and/or to spread malware infection within the network. What is worth...

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