2016-12-27 - PSEUDO-DARKLEECH RIG-V FROM 109.234.37[.]178 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:

• 2016-12-27-pseudoDarkleech-Rig-V-sends-Cerber-ransomware.pcap.zip   405.0 kB (404,952 bytes)

• 2016-12-27-pseudoDarkleech-Rig-V-sends-Cerber-ransomware.pcap   (496,477 bytes)

• 2016-12-27-pseudoDarkleech-Rig-V-and-Cerber-ransomware-files.zip   510.5 kB (510,499 bytes)

• 2016-12-27-Cerber-ransomware-decryption-instructions_VQ746C_README_.hta   (67,164 bytes)
• 2016-12-27-Cerber-ransomware-decryption-instructions_VQ746C_README_.jpg   (226,515 bytes)
• 2016-12-27-page-from-joellipman_com-with-injected-pseudoDarkleech-script.txt   (68,419 bytes)
• 2016-12-27-pseudoDarkleech-Rig-V-OTTYUADAF.txt   (1,137 bytes)
• 2016-12-27-pseudoDarkleech-Rig-V-flash-exploit.swf   (12,839 bytes)
• 2016-12-27-pseudoDarkleech-Rig-V-landing-page.htm   (5,386 bytes)
• 2016-12-27-pseudoDarkleech-Rig-V-payload-Cerber-ransomware-rad9D2FF.tmp.exe   (306,878 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
• 109.234.37[.]178 port 80 - free.brunette[.]toys - Rig-V
• 1.22.15[.]0 to 1.22.15[.]31 (1.22.15[.]0/27) UDP port 6892 - Cerber ransomware post-infection UDP traffic
• 2.23.16[.]0 to 2.23.16[.]31 (2.23.16[.]0/27) UDP port 6892 - Cerber ransomware post-infection UDP traffic
• 91.239.24[.]0 to 91.239.25[.]255 (91.239.24[.]0/23) UDP port 6892 - Cerber ransomware post-infection UDP traffic
• 45.35.190[.]52 port 80 - ffoqr3ug7m726zou.1mwipu[.]top - Cerber ransomware post-infection HTTP traffic

 

FILE HASHES

FLASH EXPLOIT:

• SHA256 hash:  a5aa6a0d3a245380ca18c8beb994f00271e5a9ee19c107749473b5092620e81e   (12,839 bytes)
  File description:  Rig-V Flash exploit seen on 2016-12-27

PAYLOAD (CERBER RANSOMWARE):

• SHA256 hash:  384b89f1cf6cddeda7a5c05c23ac5709588bd341f329d48dae6eab228b444ef3   (306,878 bytes)
  File path:  C:\Users\[Username]\AppData\Local\Temp\rad9D2FF.tmp.exe

 

IMAGES

Shown above:  Desktop of an infected Windows host.

 

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