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Threat Group Cards: A Threat Actor Encyclopedia

Permanent link Tool: Emdivi

NamesEmdivi
Newsripper
CategoryMalware
TypeBackdoor
Description(Kaspersky) The emdivi family stores important data about itself, including C2, API name, strings for anti-analysis, value of mutexes, as well as the md5 checksum of backdoor commands and the internal proxy information. They are stored in encrypted form, and are decrypted when necessary. Therefore, to analyze an emdivi sample in detail, we need to locate which hex codes are encrypted, and how to decrypt them. In the process of decryption, a unique decryption key is required for each sample.
Information<https://securelist.com/new-activity-of-the-blue-termite-apt/71876/>
<https://blogs.jpcert.or.jp/en/2015/11/emdivi-and-the-rise-of-targeted-attacks-in-japan.html>
<http://blog.trendmicro.com/trendlabs-security-intelligence/chessmaster-cyber-espionage-campaign/>
<http://blog.trendmicro.com/trendlabs-security-intelligence/attackers-target-organizations-in-japan-transform-local-sites-into-cc-servers-for-emdivi-backdoor/>
Malpedia<https://malpedia.caad.fkie.fraunhofer.de/details/win.emdivi>
AlienVault OTX<https://otx.alienvault.com/browse/pulses?q=tag:emdivi>

Last change to this tool card: 13 May 2020

Download this tool card in JSON format

All groups using tool Emdivi

ChangedNameCountryObserved

APT groups

 Blue Termite, Cloudy OmegaChina2013 
 Stone Panda, APT 10, menuPassChina2006-Feb 2022X

2 groups listed (2 APT, 0 other, 0 unknown)

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Electronic Transactions Development Agency

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