2016-10-24 - PSEUDO-DARKLEECH RIG EK FROM 95.183.12[.]11 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:

• 2016-10-24-pseudoDarkleech-Rig-EK-sends-Cerber-ransomware.pcap.zip   274.5 kB (274,485 bytes)

• 2016-10-24-pseudoDarkleech-Rig-EK-sends-Cerber-ransomware.pcap   (477,703 bytes)

• 2016-10-24-pseudoDarkleech-Rig-EK-and-Cerber-ransomware-files.zip   541.1 kB (541,075 bytes)

• 2016-10-24-Cerber-ransomware-decryption-instructions-README.hta   (63,083 bytes)
• 2016-10-24-Cerber-ransomware-decryption-instructions.bmp   (1,920,054 bytes)
• 2016-10-24-page-from-avalon-logistic_com-with-injected-script.txt   (46,084 bytes)
• 2016-10-24-pseudoDarkleech-Rig-EK-flash-exploit.swf   (51,786 bytes)
• 2016-10-24-pseudoDarkleech-Rig-EK-landing-page.txt   (5,075 bytes)
• 2016-10-24-pseudoDarkleech-Rig-EK-payload-Cerber-ransomware.exe   (265,339 bytes)

 

NOTES:

• Thanks to @BroadAnalysis for emailing me about the compromised site.
• Looks like Rig EK changed its URL patterns since yesterday.

 

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:

• avalon-logistic[.]com - Compromised site
• 95.183.12[.]11 port 80 - ds.mapalocksmith[.]com - Rig EK
• 194.165.16[.]0 - 194.165.19[.]255 (194.165.16[.]0/22) port 6892 (UDP) - UDP traffic caused by Cerber ransomware
• 136.243.157[.]171 port 80 - ffoqr3ug7m726zou.0ndl3j[.]bid - HTTP traffic caused by Cerber ransomware

OTHER DOMAINS FROM THE DECRYPT INSTRUCTIONS:

• ffoqr3ug7m726zou.osc6l4[.]bid
• ffoqr3ug7m726zou[.]onion[.]to

 

FILE HASHES

FLASH EXPLOIT:

• SHA256 hash:  0289e0909b4141e37e2a7f3a5de4390d64f444081b507502976f6b4dc2ab3baa
  File name:  2016-10-24-pseudoDarkleech-Rig-EK-flash-exploit.swf   (51,786 bytes)

PAYLOAD:

• SHA256 hash:  382624b9587792bcf5d16bf6b123ce4d810d702b0b4cc71624a170d76a8b0d97
  File name:  C:\Users\[username]\AppData\Local\Temp\rad91739.tmp.exe   (265,339 bytes)

 

IMAGES

Shown above:  Desktop of the infected Windows host after rebooting and checking one of the Cerber ransomware Decryptor URLs.

 

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