2016-10-31 - PSEUDO-DARKLEECH RIG-V FROM 64.187.225.228 SENDS CERBER RANSOMWARE

ASSOCIATED FILES:

• ZIP archive of the pcap:  2016-10-31-pseudoDarkleech-RIGv-delivers-Cerber-ransomware.pcap.zip   400 kB (399,972 bytes)

• 2016-10-31-pseudoDarkleech-RIGv-delivers-Cerber-ransomware.pcap   (603,718 bytes)

• ZIP archive of the malware:  2016-10-31-pseudoDarkleech-RIGv-sends-Cerber-malware-and-artifacts.zip   553 kB (553,299 bytes)

• 2016-10-31-Cerber-decryption-instructions-README.hta   (63,083 bytes)
• 2016-10-31-Cerber-decryption-instructions.bmp   (1,920,054 bytes)
• 2016-10-31-page-from-joellipman.com-with-injected-script-second-run.txt   (68,383 bytes)
• 2016-10-31-pseudoDarkleech-RIGv-artifact-MXj6sFosp-second-run.txt   (1,137 bytes)
• 2016-10-31-pseudoDarkleech-RIGv-flash-exploit-second-run.swf   (51,801 bytes)
• 2016-10-31-pseudoDarkleech-RIGv-landing-page-second-run.txt   (5,152 bytes)
• 2016-10-31-pseudoDarkleech-RIGv-payload-Cerber.exe   (278,568 bytes)

 

NOTES:

• Saw a different payload from RIG-v used by the pseudoDarkleech campaign earlier today (link).
• That was very unusual (at least for me), but things look back to normal now.

• 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
• 64.187.225.228 port 80 - onlikolyabes56hshop.top - 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.hnpee0.top - HTTP traffic caused by Cerber

OTHER DOMAINS FROM THE DECRYPT INSTRUCTIONS:

• ffoqr3ug7m726zou.hclz73.top
• ffoqr3ug7m726zou.onion.to

 

FILE HASHES

FLASH EXPLOIT:

• SHA256 hash:  c8060e6a20fa3d6ef75467c2beec1216a346cf35de863f2533260fb51ecc3cf5
  File name:  2016-10-31-pseudoDarkleech-RIGv-flash-exploit-second-run.swf   (51,801 bytes)

PAYLOAD (CERBER RANSOMWARE):

• SHA256 hash:  a31eb55003834823679085184dbdc0946ffd0037567bd2c088d16e6e95b0d913
  File name:  C:\Users\[username]\AppData\Local\Temp\rad6848C.tmp.exe   (278,568 bytes)

 

IMAGES

Shown above:  Desktop of an infected Windows host after rebooting.  Looks like Cerber is up to version 4.1.1.

 

FINAL NOTES

Once again, here are the associated files:

• ZIP archive of the pcap:  2016-10-31-pseudoDarkleech-RIGv-delivers-Cerber-ransomware.pcap.zip   400 kB (399,972 bytes)
• ZIP archive of the malware:  2016-10-31-pseudoDarkleech-RIGv-sends-Cerber-malware-and-artifacts.zip   553 kB (553,299 bytes)

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