2016-10-04 - PSEUDO-DARKLEECH RIG EK FROM 194.87.239[.]147 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:

• 2016-10-04-pseudoDarkleech-Rig-EK-sends-Cerber-ransomware.pcap.zip   308.0 kB (307,985 bytes)

• 2016-10-04-pseudoDarkleech-Rig-EK-sends-Cerber-ransomware.pcap   (426,779 bytes)

• 2016-10-04-pseudoDarkleech-Rig-EK-and-Cerber-ransomware-files.zip   1.1 MB (1,067,372 bytes)

• 2016-10-04-page-from-securechicago_com-with-injected-script.txt   (42,985 bytes)
• 2016-10-04-pseudoDarkleech-Cerber-ransomware-README.hta   (63,059 bytes)
• 2016-10-04-pseudoDarkleech-Cerber-ransomware-decrypt-instructions.bmp   (1,440,054 bytes)
• 2016-10-04-pseudoDarkleech-Rig-EK-flash-exploit.swf   (25,548 bytes)
• 2016-10-04-pseudoDarkleech-Rig-EK-landing-page.txt   (30,042 bytes)
• 2016-10-04-pseudoDarkleech-Rig-EK-payload-Cerber-ransomware.exe   (244,896 bytes)

 

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

• Thanks to @killamjr for information on the compromised website.

 

Shown above:  Flowchart for this infection traffic.

 

TRAFFIC

Shown above:  Injected script from the pseudoDarkleech campaign in page from the compromised site.

 

Shown above:  Traffic from the pcap filtered in Wireshark.

 

ASSOCIATED DOMAINS:

• securechicago[.]com - Compromised website
• 194.87.239[.]147 port 80 - sd.contentwize[.]com - Rig EK
• 31.184.234[.]0 - 31.184.235[.]255 port 6892 (UDP) - UDP traffic caused by Cerber ransomware
• 173.254.231[.]111 port 80 - ffoqr3ug7m726zou.zxtezv[.]bid - HTTP traffic caused by Cerber ransomware

DOMAINS FROM THE DECRYPT INSTRUCTIONS:

• ffoqr3ug7m726zou.zxtezv[.]bid
• ffoqr3ug7m726zou.e6cf2t[.]bid
• ffoqr3ug7m726zou[.]onion[.]to

 

FILE HASHES

FLASH EXPLOIT:

• SHA256 hash:  6bd5397728e394a3902b264ecbb1e7900f5b19cfe5725a4be38b6f273785d295
  File name:  2016-10-04-pseudoDarkleech-Rig-EK-flash-exploit.swf   (25,548 bytes)

PAYLOAD:

• SHA256 hash:  1e6b1907bced23bba9db02c0678518bd09dbb48fca9187159e41d6e50e827f16
  File name:  2016-10-04-pseudoDarkleech-Rig-EK-payload-Cerber-ransomware.exe   (244,896 bytes)

 

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