2017-01-04 - PSEUDO-DARKLEECH RIG-V FROM 194.87.232[.]6 SENDS CERBER RANSOMWARE

ASSOCIATED FILES:

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.

• 2017-01-04-pseudoDarkleech-Rig-V-sends-Cerber-ransomware.pcap.zip   1.0 MB (1,009,900 bytes)

• 2017-01-04-pseudoDarkleech-Rig-V-sends-Cerber-ransomware.pcap   (1,133,531 bytes)

• 2017-01-04-pseudoDarkleech-Rig-V-artifacts-and-Cerber-ransomware.zip   464.9 kB (464,898 bytes)

• 2017-01-04-Cerber-ransomware-decryption-instructions_JSRI0F_README_.hta   (67,448 bytes)
• 2017-01-04-Cerber-ransomware-decryption-instructions_JSRI0F_README_.jpg   (193,876 bytes)
• 2017-01-04-page-from-joellipman_com-with-injected-pseudoDarkleech-script.txt   (67,401 bytes)
• 2017-01-04-pseudoDarkleech-Rig-V-artifact-OTTYUADAF.txt   (1,137 bytes)
• 2017-01-04-pseudoDarkleech-Rig-V-flash-exploit.swf   (24,390 bytes)
• 2017-01-04-pseudoDarkleech-Rig-V-landing-page.txt   (5,190 bytes)
• 2017-01-04-pseudoDarkleech-Rig-V-payload-Cerber-ransomware-rad7AAE9.tmp.exe   (228,598 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:

• My most recent in-depth write-up on the pseudoDarkleech campaign can be found here.

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
• 194.87.232[.]6 port 80 - add.engstromperformance[.]com - Rig-V
• 15.44.20[.]0 to 15.44.20[.]31 (15.44.20[.]0/27) UDP port 6892 - Cerber ransomware post-infection UDP traffic
• 16.43.12[.]0 to 16.43.12[.]31 (16.43.12[.]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
• 217.12.208[.]65 port 80 - p27dokhpz2n7nvgr.1fpeer[.]top - Cerber ransomware post-infection HTTP traffic

 

FILE HASHES

FLASH EXPLOIT:

• SHA256 hash:  c43905c44541b9b7d0be23e439d315c01d053860123d33be2c240e8900d3cfc3   (24,390 bytes)
  File description:  Rig-V Flash exploit seen on 2017-01-04

PAYLOAD (CERBER RANSOMWARE):

• SHA256 hash:  e332b5b95d01ac8525b9cfb1fa7f7dea6c76cbab4da0164daa0fb066413098ba   (228,598 bytes)
  File path:  C:\Users\[username]\AppData\Local\Temp\rad7AAE9.tmp.exe

 

IMAGES

Shown above:  Desktop of an infected Windows host.

 

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