2016-10-27 - PSEUDO-DARKLEECH RIG-V FROM 185.158.152.45 SENDS CERBER RANSOMWARE

ASSOCIATED FILES:

• ZIP archive of the pcap:  2016-10-27-pseudoDarkleech-RIGv-sends-Cerber-ransomware.pcap.zip   483 kB (483,437 bytes)

• 2016-10-27-pseudoDarkleech-RIGv-sends-Cerber-ransomware.pcap   (699,831 bytes)

• ZIP archive of the malware:  2016-10-27-pseudoDarkleech-RIGv-sends-Cerber-malware-and-artifacts.zip   676 kB (675,898 bytes)

• 2016-10-27-Cerber-decryption-instructions-README.hta   (63,083 bytes)
• 2016-10-27-Cerber-decryption-instructions.bmp   (1,920,054 bytes)
• 2016-10-27-RIGv-artifact-MXj6sFosp.txt   (1,137 bytes)
• 2016-10-27-page-from-joellipman.com-with-injected-pseudoDarkleech-script.txt   (68,443 bytes)
• 2016-10-27-pseudoDarkleech-RIGv-flash-exploit.swf   (51,780 bytes)
• 2016-10-27-pseudoDarkleech-RIGv-landing-page.txt   (5,140 bytes)
• 2016-10-27-pseudoDarkleech-RIGv-payload-Cerber.exe   (398,439 bytes)

 

NOTES:

• There are currently at least 2 versions of Rig EK being used by different campaigns.
• One is an updated/evolving "VIP version" version of Rig EK that @kafeine has been calling RIG-v as described here.
• The other version of Rig EK is "regular Rig" that generally looks the same as it has for a while now.
• RIG-v is currently being used by the Afraidgate and pseudoDarkleech campaigns.
• Regular Rig EK is still used by the EITest campaign.

 

BACKGROUND ON THE PSEUDO-DARKLEECH CAMPAIGN:

• Something I wrote on exploit kit (EK) fundamentals:  link
• 2016-03-22 - PaloAlto Networks Unit 42 blog:  Campaign Evolution: Darkleech to Pseudo-Darkleech and Beyond
• 2016-07-02 - SANS ISC diary:  Change in patterns for the pseudoDarkleech campaign
• 2016-09-14 - Malware-traffic-analysis.net:  The pseudoDarkleech campaign starts using Rig EK instead of Neutrino EK
• 2016-10-03 - Malware-traffic-analysis.net:  The pseudoDarkleech campaign stops sending CryptXXX, starts sending Cerber ransomware

 

Shown above:  Flowchart for this infection traffic.

 

TRAFFIC

Shown above:  Injected script from the pseudoDarkleech campaign in a page from the compromised site.

Shown above:  Traffic from the infection filtered in Wireshark.

 

ASSOCIATED DOMAINS:

• joellipman.com - Compromised site
• 185.158.152.45 port 80 - we.kansascityescaperooms.com - RIGv
• 194.165.16.0 - 194.165.19.255 (194.165.16.0/22) port 6892 (UDP) - UDP traffic caused by Cerber
• 200.63.47.104 port 80 - ffoqr3ug7m726zou.yjo0z9.top - HTTP traffic caused by Cerber

OTHER DOMAINS FROM THE DECRYPT INSTRUCTIONS:

• ffoqr3ug7m726zou.x8p2m7.bid
• ffoqr3ug7m726zou.onion.to

 

FILE HASHES

FLASH EXPLOIT:

• SHA256 hash:  4f2dd2361d60c4e4c8a31164179d79b1c94fa643cd6d2e05184dc5b38221708d
  File name:  2016-10-27-pseudoDarkleech-RIGv-flash-exploit.swf   (51,780 bytes)

PAYLOAD:

• SHA256 hash:  a6a304511d704f57eddc01a5a659abaaaec3d77f9ab2652a3d2127435f05c508
  File name:  C:\Users\[username]\AppData\Local\Temp\rad2AC74.tmp.exe   (398,439 bytes)

 

IMAGES

Shown above:  Desktop of the infected Windows host after rebooting.

 

FINAL NOTES

Once again, here are the associated files:

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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