2016-10-17 - PSEUDO-DARKLEECH RIG EK FROM 5.200.35[.]126 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:

• 16-10-17-pseudoDarkleech-Rig-EK-sends-Cerber-ransomware-3-pcaps.zip   1.5 MB (1,521,307 bytes)

• 2016-10-17-pseudoDarkleech-Rig-EK-sends-Cerber-ransomware-first-run.pcap   (681,413 bytes)
• 2016-10-17-pseudoDarkleech-Rig-EK-sends-Cerber-ransomware-second-run.pcap   (575,307 bytes)
• 2016-10-17-pseudoDarkleech-Rig-EK-sends-Cerber-ransomware-third-run.pcap   (633,131 bytes)

• 22016-10-17-pseudoDarkleech-Rig-EK-and-Cerber-ransomware-files.zip   816.5 kB (816,452 bytes)

• 2016-10-17-Cerber-ransomware-decryption-instructions-README.hta   (63,059 bytes)
• 2016-10-17-Cerber-ransomware-decryption-instructions.bmp   (1,920,054 bytes)
• 2016-10-17-page-from-annaburn_be-with-injected-script.txt   (84,363 bytes)
• 2016-10-17-page-fromfurniturecorporation_com-with-injected-script.txt   (86,084 bytes)
• 2016-10-17-page-jdsbrainwave_com-with-injected-script.txt   (20,403 bytes)
• 2016-10-17-pseudoDarkleech-Rig-EK-flash-exploit-all-three-runs.swf   (51,756 bytes)
• 2016-10-17-pseudoDarkleech-Rig-EK-landing-page-first-run.txt   (30,247 bytes)
• 2016-10-17-pseudoDarkleech-Rig-EK-landing-page-second-run.txt   (30,188 bytes)
• 2016-10-17-pseudoDarkleech-Rig-EK-landing-page-third-run.txt   (30,296 bytes)
• 2016-10-17-pseudoDarkleech-Rig-EK-payload-Cerber-ransomware-all-three-runs.exe   (467,707 bytes)

 

NOTES:

• As always, thanks to everyone who tweets about the compromised websites they find.
• I found today's compromised website in tweets from @BiebsMalwareGuy and @FreeBSDfan.

 

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 first compromised site.

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

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

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

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

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

 

ASSOCIATED DOMAINS:

• www.annaburn[.]be - Compromised site (first run)
• furniturecorporation[.]com - Compromised site (second run)
• jdsbrainwave[.]com - Compromised site (third run)
• 5.200.35[.]126 port 80 - vd.katiejustin[.]com - Rig EK (first run)
• 5.200.35[.]126 port 80 - srt.kassidymichael[.]com - Rig EK (second run)
• 5.200.35[.]126 port 80 - my.kassira[y].com - Rig EK (third run)
• 31.184.234[.]0 - 31.184.235[.]255 port 6892 (UDP) - UDP traffic caused by Cerber (all 3 runs)
• 107.161.95[.]138 port 80 - ffoqr3ug7m726zou.zn90h4[.]bid - HTTP traffic caused by Cerber ransomware (first and second runs)
• 173.254.231[.]111 port 80 - ffoqr3ug7m726zou.zn90h4[.]bid - HTTP traffic caused by Cerber ransomware (third run)

OTHER DOMAINS FROM THE DECRYPT INSTRUCTIONS:

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

 

FILE HASHES

FLASH EXPLOIT:

• SHA256 hash:  792884fa58616d70ad35037e1bea240df5db95ad0f4d0476ec34987ff01462be
  File name:  2016-10-17-pseudoDarkleech-Rig-EK-flash-exploit-all-three-runs.swf   (51,756 bytes)

PAYLOAD:

• SHA256 hash:  e14f32bdfbb2dc1117736029677effdedec2f570d73092261ba98f040a1b282f
  File name:  2016-10-17-pseudoDarkleech-Rig-EK-payload-Cerber-all-three-runs.exe   (467,707 bytes)

 

IMAGES

Shown above:  Desktop of an infected Windows host after rebooting.

 

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