Ursnif is being upgraded every passing day and functions are also being upgraded and revised. Speaking of Ursnif, it was 2016 when it was rampant in Japan so it's still fresh in memory. There are many codes that are similar to Ursnif. Ransomware 「WannaCry」 Countermeasure Guide rev.1(Japanese) About DreamBot Figure 1 Examples of broadcast emails in JapaneseĭreamBot is a malware that extends the functions of Ursnif (Alias: Gozi) and it is mainly targeting financial institutions to steal authentication information in internet banking. *Regarding the large-scale cyberattack ransomware "WannaCry" I have summarized it here, so please use this as a reference on threat overview and measures that need to be taken by your organization. This time, I tried to investigate the attacker group spreading DreamBot by using a broadcasting email in Japanese
Dreambot download zip#
Both of the attached files were compressed in zip format and the contents of the zip files were executable files (DreamBot) and a "js file" embedded in the word document would download DreamBot from an unauthorized site. In March 2017, even though the Japan Cyber Crime Prevention Center announced a warning about DreamBot, the attack campaign has continued and as of May 2017, we have detected broadcast type of emails in Japanese several times a week spreading the DreamBot infection.įigure 1 shows an example of a broadcast type of email in Japanese received on May 15 and 18. Attack Vectors Behind Online Banking Malware "DreamBot" Targets JapanĪlthough the damage caused by the WannaCry ransomware has been reported worldwide, in Japan, the attack campaign of the internet banking malware called "DreamBot" is still ongoing.
0 kommentar(er)
