2016-12-13 - PSEUDO-DARKLEECH RIG-V FROM 195.133.48[.]182 SENDS CERBER 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:

• 2016-12-13-pseudoDarkleech-Rig-V-sends-Cerber-ransomware.pcap.zip   888.2 kB (888,243 bytes)

• 2016-12-13-pseudoDarkleech-Rig-V-sends-Cerber-ransomware.pcap   (1,001,972 bytes)

• 2016-12-13-pseudoDarkleech-Rig-V-and-Cerber-ransomware-files.zip   500.1 kB (500,053 bytes)

• 2016-12-13-Cerber-ransomware-decryption-instructions-tmp9453.bmp   (1,920,054 bytes)
• 2016-12-13-Cerber-ransomware-decryption-instructions_README_TV7QWCYC_.hta   (66,435 bytes)
• 2016-12-13-page-from-joellipman_com-with-injected-pseudoDarkleech-script.txt   (68,868 bytes)
• 2016-12-13-pseudoDarkleech-Rig-V-flash-exploit.swf   (12,397 bytes)
• 2016-12-13-pseudoDarkleech-Rig-V-landing-page.txt   (5,380 bytes)
• 2016-12-13-pseudoDarkleech-Rig-V-payload-Cerber-ransomware-rad8B9E2.tmp.exe   (257,903 bytes)

BACKGROUND ON RIG EXPLOIT KIT:

• I'm currently tracking 3 versions of Rig EK as classified in an October 2016 blog post by Kafeine.
• Rig-V: a "VIP version" with new URL patterns & RC4 payload encryption.  Used by the Afraidgate & pseudoDarkleech campaigns.  Sometimes used by the EITest campaign.
• Rig-E: a variant with old Rig EK URL patterns & RC4 payload encryption.  Also known as Empire Pack.  I often see Rig-E used by the EITest campaign.
• Rig standard: uses new URL patterns introduced by Rig-V, but old obfuscation (ASCII string to XOR the payload binary).  I haven't seen this one in a while.

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
• 195.133.48[.]182 port 80 - feel.easytrimmd[.]com - Rig-V
• 1.11.32[.]0 to 1.11.32[.]31 (1.11.32[.]0/27) UDP port 6892 - Cerber ransomware post-infection UDP traffic
• 55.15.15[.]0 to 55.15.15[.]31 (55.15.15[.]0/27) UDP port 6892 - Cerber ransomware post-infection UDP traffic
• 194.165.16[.]0 to 194.165.17[.]255 (194.165.16[.]0/23) UDP port 6892 - Cerber ransomware post-infection UDP traffic
• 37.10.71[.]202 port 80 - ffoqr3ug7m726zou.1mznhc[.]top - Cerber ransomware post-infection HTTP traffic

 

FILE HASHES

FLASH EXPLOIT:

• SHA256 hash:  0d957c720df06caeba96bb4d193c783f9acf8f3fb9d5e5d270ae517b3a88dad4   (10,096 bytes)
  File description:  Rig-V Flash exploit seen on 2016-12-13

PAYLOAD (CERBER RANSOMWARE):

• SHA256 hash:  67fb3f0bc18232bf59ab4191e8359c6c2d713f6e590c14e6bcfc4fe68cfcc25e   (257,903 bytes)
  File path:  C:\Users\[Username]\AppData\Local\Temp\rad8B9E2.tmp.exe

 

IMAGES

Shown above:  Desktop of an infected Windows host.

 

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