2016-09-01 - EITEST RIG EK FROM 185.141.27[.]37 SENDS BART RANSOMWARE

NOTICE:

• The zip archives on this page have been updated, and they now use the new password scheme.  For the new password, see the "about" page of this website.

ASSOCIATED FILES:

• 2016-09-01-EITest-Rig-EK-sends-Bart-ransomware.pcap.zip   330.5 kB (330,513 bytes)

• 2016-09-01-EITest-Rig-EK-sends-Bart-ransomware.pcap   (521,753 bytes)

• 2016-09-01-EITest-Rig-EK-and-Bart-ransomware-files.zip   372.2 kB (372,244 bytes)

• 2016-09-01-EITest-Rig-EK-flash-exploit.swf   (46,134 bytes)
• 2016-09-01-EITest-Rig-EK-landing-page.txt   (3,662 bytes)
• 2016-09-01-EITest-Rig-EK-payload-Bart-ransomware.exe   (320,819 bytes)
• 2016-09-01-EITest-flash-redirect-from-www.oheruci_top.swf   (5,741 bytes)
• 2016-09-01-page-from-beautyhows_com-with-injected-EITest-script.txt   (175,259 bytes)
• recover.bmp   (3,686,454 bytes)
• recover.txt   (1,778 bytes)

 

NOTES:

Shown above:  Tweet from @BelchSpeak that led me to the compromised site.

 

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.beautyhows[.]com - Compromised site
• 194.165.16[.]203 port 80 - www.oheruci[.]top - EITest gate
• 185.141.27[.]37 port 80 - r29q8i13[.]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:  f0a8452419edab4ad295d9488759f887a37ceeed7a4a0459b07bcf0490736c34
  File name:  2016-09-01-EITest-flash-redirect-from-www.oheruci.top.swf

• SHA256 hash:  fbf08ccf556ac987de8b8a883d3a2292e0ca77e1aa691f7a9cf31bc1a4313b9a
  File name:  2016-09-01-EITest-Rig-EK-flash-exploit.swf

PAYLOAD:

• SHA256 hash:  89f056d7a9b1bf95680c37159757922536488d04a40f5ddbd33b45b51691b772
  File name:  016-09-01-EITest-Rig-EK-payload-Bart-ransomware.exe

 

IMAGES

Shown above:  The infected Windows host after rebooting.

 

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

 

Shown above:  Following the URLs for the Bart decryptor.

 

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