Rig Exploit Kit via the EiTest delivers CryptoShield ransomware

NOTES:

  • Today I captured traffic from the Rig Exploit Kit (EK) which delivered CryptoShield  ransomware via the EITEST campaign.
  • Files on the infected host were encrypted and the file extensions were changed to .CRYPTOSHIELD .
  • Thanks to @nao_sec for tweeting information on compromised site

I have added a zipped pcap file for your analysis. The password for the zipped pcap is infected all lowercase.

PCAP file of the infection traffic:
2017-02-27-Rig-EK-pcap.zip

 

ASSOCIATED DOMAINS AND IP ADDRESSES:

  • starterdaily.com – COMPROMISED SITE
  • 188.225.36.251 – 3rew.nicacomercial.com – RIG EK LANDING PAGE
  • 5.154.191.90 – POST /images/products-over.php – CRYPTOSHIELD C2


ASSOCIATED EMAILS FOR RANSOM PAYMENT:

r_sp@india.com – SUPPORT;
r_sp@computer4u.com – SUPPORT RESERVE FIRST;
res_reserve@india.com – SUPPORT RESERVE SECOND;

 

IMAGES AND DETAILS OF INFECTION CHAIN:

Shown above: Network traffic  associated with the Rig exploit and the delivery of CryptoShield ransomware

 

Shown above: Injected script found on index page of compromised site associated with the EiTest campaign which redirects visitors to the Rig EK landing page – Web page source code can be found by right clicking on web page and selecting “View source”

 

Shown above: # RESTORING FILES #.HTML ransom note and payment instruction associated with CryptoShield ransomware

 

MALICIOUS PAYLOAD ASSOCIATED WITH RIG EXPLOIT: