Rig Exploit kit – Compromised sites deliver GootKit and CryptFile2 ransomware


NOTES:

  • Today I captured traffic from 2 compromised sites which redirected to the Rig Exploit Kit (EK) delivering GootKit banking malware and CryptFile2  ransomware via the EITEST campaign.
  • Thanks to Baber for sharing information on compromised sites.

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:
2016-10-18-Rig-EK-GootKit-pcap.zip
2016-10-18-Rig-EK-CryptFile2-pcap.zip

 

ASSOCIATED DOMAINS AND IP ADDRESSES FOR GootKit INFECTION:

  • hiltongardeninnoakville.com – COMPROMISED SITE
  • 185.141.26.126 – kd67.prmhohzsl.top – RIG EK LANDING PAGE
  • 79.110.251.102 Ports 80 443 – bigikurik.com – GOOTKIT POST INFECT TRAFFIC
  • 199.180.115.105 – bigikurik.com – NO POST COMMUNICATION
  • tibilanruk.com – DNS Server Failure


IMAGES AND DETAILS OF GootKit INFECTION CHAIN
:

Shown above: Network traffic  associated with the Rig exploit and the delivery of GootKit banking malware

 

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

 

Shown above: Registry key associated with GootKit infection

 

Shown above: Registry key associated with GootKit infection

 

MALICIOUS PAYLOAD ASSOCIATED WITH GootKit INFECTION:

2016-10-18-Rig-EK.swf
Virus Total Link
2016-10-18-FC5A.tmp – [Original Payload]
Virus Total Link
2016-10-18-ntpreke.dll – [GootKit]
Virus Total Link

 

ASSOCIATED DOMAINS AND IP ADDRESSES FOR CryptFile2 INFECTION:

  • www.ophthalmic-surgeon.co.za – COMPROMISED SITE
  • 195.133.201.133 – acc.arabicdessert.co – RIG EK LANDING PAGE
  • 195.154.122.33 – GET /default.jpg – CRYPTFILE2 CnC
  • 195.154.122.33 – POST /setting/get_setting.php – CRYPTFILE2 CnC

ASSOCIATED EMAILS FOR RANSOM PAYMENT:

E-MAIL1: enc6@usa.com
E-MAIL2: enc6@dr.com

 

IMAGES AND DETAILS OF CryptFile2 INFECTION CHAIN:

Shown above: Network traffic  associated with the Rig exploit and the delivery of CryptFile2 ransomware

 

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

 

Shown above: HELP_DECRYPT_YOUR_FILES.TXT ransom note and payment instruction associated with CryptFile2 ransomware

 

MALICIOUS PAYLOAD ASSOCIATED WITH CryptFile2 INFECTION: