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Rewterz Threat ALert – Continued Activity of Kimsuky Group – IOC’s

Severity

High

Analysis Summary

The Kimsuky group is a threat group that is known to have been behind the KHNP (Korea Hydro & Nuclear Power) cyber terrorism attacks in 2014 and is still active as of 2019. The spear-phishing email used in the attack was designed with the purpose of stealing portal account information and attaching malicious code. The main targets of the attack are government  and military officials or reporters.

The malicious document is a question about ROK- US / China – Korea diplomacy related to North Korea policy on the Korean peninsula. The attacker inserted a n EPS image file format using the CVE 2017-8291 ghost vulnerability into the document to execute the malicious function. 

img.png
img.png

Impact

Exposure of sensitive information

Indicators of Compromise

MD5

42ae424f27d83fa132b2967b64f6ba21

SH256

  • 8ea86eb5844f537be71f98ff5ff5ffade8ff7b61a69406090495c92072140277
  • 0aa978d3ec302c57370201906148280a90baec51b99afdd334cc4e22e89fd037
  • d94f26158dc3fd9fd93aa7f38afe63f3893b00c03d04c08f0581323e3ee3de58
  • ed4c809ec7fb8aec56e4280b3f2867aa2eb75cd7db26464dd49d82ae99517b20

URL

  • http[:]//clouds[.]scienceontheweb[.]net/img/png/download[.]png/?filename=button03
  • http[:]//clouds[.]scienceontheweb[.]net/img/png/download[.]png/button03[.]down
  • http[:]//clouds[.]scienceontheweb[.]net/img/png/load[.]png/
  • http[:]//clouds[.]scienceontheweb[.]net/img/png/download[.]png/?filename=button04

Remediation

  • Block all threat indicators at your respective controls.
  • Always be suspicious about emails sent by unknown senders.
  • Never click on the links/attachments sent by unknown senders.