2016-12-29 - PSEUDO-DARKLEECH RIG-V FROM 92.53.105.158 SENDS CERBER RANSOMWARE

ASSOCIATED FILES:

• ZIP archive of the pcap:  2016-12-29-pseudoDarkleech-Rig-V-sends-Cerber-ransomware.pcap.zip   1.2 MB (1,182,437 bytes)

• 2016-12-29-pseudoDarkleech-Rig-V-sends-Cerber-ransomware.pcap   (1,315,661 bytes)

• ZIP archive of the malware:  2016-12-29-pseudoDarkleech-Rig-V-sends-Cerber-malware-and-artifacts.zip   500 kB (500,326 bytes)

• 2016-12-29-Cerber-decryption-instructions_JVP2I9_README_.hta   (67,418 bytes)
• 2016-12-29-Cerber-decryption-instructions_JVP2I9_README_.jpg   (193,651 bytes)
• 2016-12-29-page-from-joellipman.com-with-injected-pseudoDarkleech-script.txt   (67,408 bytes)
• 2016-12-29-pseudoDarkleech-Rig-V-artifact-OTTYUADAF.txt   (1,137 bytes)
• 2016-12-29-pseudoDarkleech-Rig-V-flash-exploit.swf   (12,750 bytes)
• 2016-12-29-pseudoDarkleech-Rig-V-landing-page.txt   (5,374 bytes)
• 2016-12-29-pseudoDarkleech-Rig-V-payload-Cerber-ransomware.exe   (351,188 bytes)

BACKGROUND ON RIG EXPLOIT KIT:

• I'm routinely intercepting 2 versions of Rig EK as classified in an October 2016 blog post by Kafeine.
• Rig-V: a "VIP version" with new URL patterns and RC4 encryption for the payload.  Used by the Afraidgate, EITest, and pseudoDarkleech campaigns.
• Rig-E: a variant with old URL patterns, but uses with RC4 encryption for the payload.  Also known as Empire Pack.  I often see Rig-E 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 from the compromised site.

 

Shown above:  Pcap of the infection traffic filtered in Wireshark.

 

ASSOCIATED DOMAINS:

• joellipman.com - Compromised site
• 92.53.105.158 port 80 - see.valentines.toys - Rig-V
• 1.22.15.0 to 1.22.15.31 (1.22.15.0/27) UDP port 6892 - Cerber post-infection UDP traffic
• 2.23.16.0 to 2.23.16.31 (2.23.16.0/27) UDP port 6892 - Cerber post-infection UDP traffic
• 91.239.24.0 to 91.239.25.255 (91.239.24.0/23) UDP port 6892 - Cerber post-infection UDP traffic
• 217.12.208.65 port 80 - p27dokhpz2n7nvgr.1nuljt.top - Cerber post-infection HTTP traffic

 

FILE HASHES

FLASH EXPLOIT:

• SHA256 hash:  955e3873f3b53f1eab3f157ee3afd01e33fca6beb96413ac50d00017252f0caa   (12,750 bytes)
  File description:  Rig-V Flash exploit seen on 2016-12-29

PAYLOAD (CERBER RANSOMWARE):

• SHA256 hash:  ce2169e0d61e34593b6ae5a3a2395c1cca47d7e518a276bd84f10b2b5afa7d29   (351,188 bytes)
  File path:  C:\Users\[username]\AppData\Local\Temp\rad3C924.tmp.exe

 

IMAGES

Shown above:  Desktop of an infected Windows host.

 

FINAL NOTES

Once again, here are the associated files:

• ZIP archive of the pcap:  2016-12-29-pseudoDarkleech-Rig-V-sends-Cerber-ransomware.pcap.zip   1.2 MB (1,182,437 bytes)
• ZIP archive of the malware:  2016-12-29-pseudoDarkleech-Rig-V-sends-Cerber-malware-and-artifacts.zip   500 kB (500,326 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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