2016-09-14 - EITEST GATE URL PATTERNS CHANGED

ASSOCIATED FILES:

• ZIP archive of the pcaps:  2016-09-14-EITest-Rig-EK-sends-Bart-ransomware.pcap.zip   176.8 kB (176,775 bytes)

• 2016-09-14-EITest-Rig-EK-sends-Bart-ransomware.pcap   (241,384 bytes)

• ZIP archive of the malware:  2016-09-14-EITest-Rig-EK-sends-Bart-ransomware-malware-and-artifacts.zip   204.9 kB (204,938 bytes)

• 2016-09-14-Bart-ransomware-decryptor-page.css   (3,049 bytes)
• 2016-09-14-Bart-ransomware-decryptor-page.html   (6,439 bytes)
• 2016-09-14-Bart-ransomware-recovery-instructions.bmp   (3,686,454 bytes)
• 2016-09-14-Bart-ransomware-recovery-instructions.txt   (1,696 bytes)
• 2016-09-14-EITest-Rig-EK-flash-exploit.swf   (49,000 bytes)
• 2016-09-14-EITest-Rig-EK-landing-page.txt   (3,422 bytes)
• 2016-09-14-EITest-Rig-EK-payload-Bart-ransomware.exe   (123,904 bytes)
• 2016-09-14-EITest-flash-redirect-from-freekidscrafts.xyz.swf   (4,032 bytes)
• 2016-09-14-page-from-hydrogengroup.com-with-injected-EITest-script.txt   (52,446 bytes)

 

NOTES:

• Thanks to Peter for emailing me about this compromised site.
• URL patterns for the EITest gate have changed (see below image of the traffic filtered in Wireshark for details).
• I last documented EITest Rig EK sending Bart ransomware on 2016-09-01.

 

BACKGROUND ON THE EITEST CAMPAIGN:

• Something I wrote on exploit kit (EK) fundamentals:  link
• 2016-03-31 - Palo Alto Networks Unit 42 blog:  How the EITest Campaign's Path to Angler EK Evolved Over Time.
• 2016-06-08 - SANS ISC diary:  Neutrino EK and CryptXXX  (campaigns using Angler EK switch to Neutrino EK)
• 2016-08-18 - SANS ISC diary:  1 compromised site - 2 campaigns  (EITest campaign switched to Rig EK)

 

Shown above:  Flowchart for this infection traffic.

 

TRAFFIC

Shown above:  Injected script in page from the compromised site pointing to the EITest gate.

 

Shown above:  Traffic from the pcap filtered in Wireshark.

 

ASSOCIATED DOMAINS:

• www.hydrogengroup.com - Compromised site
• 31.184.193.168 port 80 - freekidscrafts.xyz - EITest gate
• 185.117.73.165 port 80 - tbcd5.gncc15s.top - Rig EK

 

DOMAINS FROM THE DECRYPT INSTRUCTIONS:

• s3clm4lufbmfhmeb.tor2web.org
• s3clm4lufbmfhmeb.onion.to
• s3clm4lufbmfhmeb.onion.cab
• s3clm4lufbmfhmeb.onion.link

 

FILE HASHES

FLASH FILES:

• SHA256 hash:  5e9f03a083aed555fb3dbf20fd4121b92f9ba5e5b2a4edd851f210536abbb853
  File name:  2016-09-14-EITest-flash-redirect-from-freekidscrafts.xyz.swf

• SHA256 hash:  e20fc49d11d8232b51ec3ce2fa24d3081c3d48db4cb66a31e2bc2c07b43e27b8
  File name:  2016-09-14-EITest-Rig-EK-flash-exploit.swf

PAYLOAD:

• SHA256 hash:  45fcdd90b1268f6d5dd2a99a78c3df1a95b7809cbe13b68d9f164edd2264005e
  File name:  2016-09-14-EITest-Rig-EK-payload-Bart-ransomware.exe

 

IMAGES

Shown above:  The infected Windows host.

 

Shown above:  File extension .bart appended to the encrypted files.

 

FINAL NOTES

Once again, here are the associated files:

• ZIP archive of the pcaps:  2016-09-14-EITest-Rig-EK-sends-Bart-ransomware.pcap.zip   176.8 kB (176,775 bytes)
• ZIP archive of the malware:  2016-09-14-EITest-Rig-EK-sends-Bart-ransomware-malware-and-artifacts.zip   204.9 kB (204,938 bytes)

ZIP files are password-protected with the standard password.  If you don't know it, look at the "about" page of this website.

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