Neutrino Exploit Kit via pseudoDarkleech delivers CrypMic Ransomware
NOTES:
- Today I captured traffic from the latest version of CrypMic ransomware. The ransomware was delivered via the pseudoDarkleech campaign with use of the Neutrino Exploit Kit.
- The injection method was an Iframe, as mentioned in a post on SANS Internet Storm Center forum Change in patterns for the pseudoDarkleech campaign.
- The pseudoDarkleech campaign is making use of DNS Shadowing as explained in a sucuri.net blog post Website Malware – Evolution of Pseudo Darkleech.
- CrypMic continues to send its ransom notes over SSL port 443 in clear text.
- CrypMic is no longer using vssadmin.exe to delete the Windows shadow copy.
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:
2016-08-14-Neutrino-EK-pcap.zip
ASSOCIATED DOMAINS AND IP ADDRESSES:
- 85.93.93.126 – yliampuvastidecher.presstheredbuttonnow.eu – Neutrino EK
- 85.14.243.9 Port 443 – C2 Check-In – POST INFECTION TRAFFIC
ASSOCIATED DOMAINS FOR RANSOM PAYMENT:
http://ccjlwb22w6c22p2k.onion.to
http://ccjlwb22w6c22p2k.onion.city
IMAGES AND DETAILS OF INFECTION CHAIN:
Shown above: Traffic associated with the Neutrino exploit and CrypMic ransomware infection.
Shown above: Injected script found on compromised site redirecting to the Neutrino Exploit Kit landing page
Shown above: Windows desktop post CrypMIC infection
MALICIOUS PAYLOAD ASSOCIATED WITH NEUTRINO EXPLOIT:
- 2016-08-14-Neutrino-EK.swf
Virus Total Link - 2016-08-14-radE3B52.tmp.dll
Virus Total Link