Rig Exploit Kit via EITEST delivers Cerber ransomware

NOTES:

  • Today I captured traffic from the Rig Exploit Kit (EK) which delivered Cerber Ransomware via the EITEST campaign.
  • This is my first time seeing the EITEST campaign deliver Cerber ransomware.
  • I was not able to retrieve the payload from post infected host. However it is in the pcap file encrypted.
  • EITEST campaign continues to use the Rig EK since switching from the Neutrino EK on August 15th 2016.
  • This is a follow-up post to an earlier twitter post.
  • Again thanks to @CyberScimitar for the tip.

I have added a zipped pcap file for your analysis. The password is the usual used by malware researchers. If you do not know it please email me.
info@broadanalysis.com

PCAP file of the infection traffic:
2016-08-25-Rig-EK-pcap.zip

 

ASSOCIATED DOMAINS AND IP ADDRESSES:

  • 85.93.0.13 – oveced.xyz – EITEST GATE
  • 109.234.38.81 – ew.yoursleepcoach.com – RIG EK LANDING PAGE
  • 192.211.58.117 – ip-api.com – GET /json – Connectivity/IP check by the Cerber
  • 104.36.80.16 – 4kqd3hmqgptupi3p.8kcfnk.bid – Cerber Decrypt Instructions
  • 31.184.234.0 – 31.184.235.255 Port 6892 – UDP Post infection traffic associated with Cerber Ransomware

ASSOCIATED DOMAIN FOR RANSOM PAYMENT:

http://4kqd3hmqgptupi3p.8kcfnk.bid

 

IMAGES AND DETAILS OF INFECTION CHAIN:

Shown above: Network traffic  associated with the Rig exploit and Cerber ransomware infection

 

Shown above: Injected script found on index page of compromised site which redirects visitor to the EITEST gate to start infection chain – Web page source code can be found by right clicking on web page and selecting “View source”

 

Shown above: Script found on EITEST gate redirecting to the Rig exploit landing page

 

Shown above: #DECRYPT MY FILES#.html decryption instructions associated with the Cerber ransomware

 

Shown above: #DECRYPT MY FILES#.txt decryption instructions associated with the Cerber ransomware

 

FINAL NOTES:
I excluded the ip-api.com from the pcap file to protect my source address and sorry I forgot to add the UDP traffic after scrubbing and uploading pcap file.