2016-10-03 - PSEUDO-DARKLEECH RIG EK FROM 194.87.145.238 SENDS CERBER RANSOMWARE

ASSOCIATED FILES:

• ZIP archive of the pcap:  2016-10-03-pseudoDarkleech-Rig-EK-sends-Cerber-ransomware-both-pcaps.zip   726.0 kB (725,960 bytes)

• 2016-10-03-pseudoDarkleech-Rig-EK-sends-Cerber-ransomware-first-run.pcap   (475,700 bytes)
• 2016-10-03-pseudoDarkleech-Rig-EK-sends-Cerber-ransomware-second-run.pcap   (488,897 bytes)

• ZIP archive of the malware:  2016-10-03-pseudoDarkleech-Rig-EK-sends-Cerber-malware-and-artifacts.zip   2.4 MB (2,384,868 bytes)

• 2016-10-03-Cerber-Decryptor-bootstrap.min.css   (121,215 bytes)
• 2016-10-03-Cerber-Decryptor-style.css   (2,807 bytes)
• 2016-10-03-Cerber-Decryptor.html   (11,966 bytes)
• 2016-10-03-Cerber-decrypt-instructions-README-first-run.hta   (63,059 bytes)
• 2016-10-03-Cerber-decrypt-instructions-README-second-run.hta   (63,059 bytes)
• 2016-10-03-Cerber-decryption-instructions-first-run.bmp   (1,920,054 bytes)
• 2016-10-03-Cerber-decryption-instructions-second-run.bmp   (1,920,054 bytes)
• 2016-10-03-page-from-joellipman.com-with-injected-script.txt   (68,286 bytes)
• 2016-10-03-page-from-whatsongreece.com-with-injected-script.txt   (56,005 bytes)
• 2016-10-03-pseudoDarkleech-Rig-EK-flash-exploit-both-runs.swf   (25,671 bytes)
• 2016-10-03-pseudoDarkleech-Rig-EK-landing-page-first-run.txt   (30,056 bytes)
• 2016-10-03-pseudoDarkleech-Rig-EK-landing-page-second-run.txt   (30,077 bytes)
• 2016-10-03-pseudoDarkleech-Rig-EK-payload-Cerber-first-run.exe   (290,980 bytes)
• 2016-10-03-pseudoDarkleech-Rig-EK-payload-Cerber-second-run.exe   (290,980 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 sends Cerber ransomware instead of CryptXXX (this blog post)

• 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 first compromised site.

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

Shown above:  Traffic from the first pcap filtered in Wireshark.

Shown above:  Traffic from the second pcap filtered in Wireshark.

ASSOCIATED DOMAINS:

• www.whatsongreece.com - Compromised website (first infection)
• joellipman.com - Compromised website (second infection)
• 194.87.145.238 port 80 - art.powersavasana.com - Rig EK
• 31.184.234.0 - 31.184.235.255 port 6892 (UDP) - UDP traffic caused by Cerber
• 45.59.114.125 port 80 - ffoqr3ug7m726zou.8dlgyg.bid - Cerber traffic (first infection)
• 173.254.231.111 port 80 - ffoqr3ug7m726zou.eujvrw.bid - Cerber traffic (second infection)

DOMAINS FROM THE DECRYPT INSTRUCTIONS:

• ffoqr3ug7m726zou.17zafg.top
• ffoqr3ug7m726zou.m54tkp.bid
• ffoqr3ug7m726zou.onion.to
• ffoqr3ug7m726zou.oxmffh.bid

 

FILE HASHES

FLASH EXPLOIT:

• SHA256 hash:  a08069b7cfdb1b63974bb5661de5cb440b1c52321b8fd60148f9124c9e461e5c
  File name:  2016-10-03-pseudoDarkleech-Rig-EK-flash-exploit-both-runs.swf

PAYLOADS:

• SHA256 hash:  aa55b9cc5853ecbe7c8aba74d1fb3ae5c226f9de9f60616e769b12a0358e49ef
  File name:  2016-10-03-pseudoDarkleech-Rig-EK-payload-Cerber-first-run.exe

• SHA256 hash:  67af5ffb5815451e1c3a372c33bd73cae39afd0b1efb36bce05b25de70fdc74e
  File name:  2016-10-03-pseudoDarkleech-Rig-EK-payload-Cerber-second-run.exe

 

IMAGES

Shown above:  Desktop of an infected host after rebooting.

 

Shown above:  Cerber Decryptor (image 1 of 4).

 

Shown above:  Cerber Decryptor (image 2 of 4).

 

Shown above:  Cerber Decryptor (image 3 of 4).

 

Shown above:  Cerber Decryptor (image 4 of 4).

 

FINAL NOTES

Once again, here are the associated files:

• ZIP archive of the pcap:  2016-10-03-pseudoDarkleech-Rig-EK-sends-Cerber-ransomware-both-pcaps.zip   726.0 kB (725,960 bytes)
• ZIP archive of the malware:  2016-10-03-pseudoDarkleech-Rig-EK-sends-Cerber-malware-and-artifacts.zip   2.4 MB (2,384,868 bytes)

ZIP files are password-protected with the standard password.  If you don't know it, look at the "about" page of this website.

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