2016-09-01 - PSEUDO-DARKLEECH NEUTRINO EK FROM 74.208.171.140 SENDS CRYPMIC RANSOMWARE
ASSOCIATED FILES:
- ZIP archive of the pcaps: 2016-09-01-pseudoDarkleech-Neutrino-EK-sends-CrypMIC-ransomware.pcap.zip 287.6 kB (287,594 bytes)
- 2016-09-01-pseudoDarkleech-Neutrino-EK-sends-CrypMIC-ransomware.pcap (547,949 bytes)
- ZIP archive of the malware: 2016-09-01-pseudoDarkleech-Neutrino-EK-malware-and-artifacts.zip 220.1 kB (220,071 bytes)
- 2016-09-01-page-from-panoplycapital.com-with-injected-script.txt (14,430 bytes)
- 2016-09-01-pseudoDarkleech-Neutrino-EK-flash-exploit.swf (78,552 bytes)
- 2016-09-01-pseudoDarkleech-Neutrino-EK-landing-page.txt (2,364 bytes)
- 2016-09-01-pseudoDarkleech-Neutrino-EK-payload-CrypMIC.dll (160,768 bytes)
- README.BMP (3,276,854 bytes)
- README.HTML (238,187 bytes)
- README.TXT (1,654 bytes)
NOTES:
- Special thanks again to Baber for giving me a tipper on the compromised website.
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
BACKGROUND ON CRYPMIC RANSOMWARE:
- 2016-07-06 - SANS ISC diary: CryptXXX ransomware updated [The date I first noticed this new branch of ransomware.]
- 2016-07-14 - From the Proofpoint blog [link]: "We believe that CryptXXX is in active development and possibly split off into two branches. The original branch is now up to version 5.001 (we wrote about the upgrade to version 3.100 near the end of May), while the new branch uses a different format for versioning and will require further analysis."
- 2016-07-20 - TrendLabs Security Intelligence Blog - CrypMIC Ransomware Wants to Follow CryptXXX's Footsteps [TrendLabs analyzes the new branch and names it.]
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. Wireshark filter: http.request or (!(tcp.port eq 80) and tcp.flags eq 0x0002)
ASSOCIATED DOMAINS:
- panoplycapital.com - Compromised site
- 74.208.171.140 port 80 - teabiscuit.b3-social.co.uk - Neutrino EK
- 95.211.225.212 port 443 - Post-infection callback traffic (custom encoded & plain text, not HTTPS/SSL/TLS)
DOMAINS FROM THE DECRYPT INSTRUCTIONS:
- ccjlwb22w6c22p2k.onion.to
- ccjlwb22w6c22p2k.onion.city
FILE HASHES
FLASH EXPLOIT:
- SHA256 hash: affbe851ba56dcf46824d54e52dd41970bf74e42b19f04f903f2ce466e88adfc
File name: 2016-09-01-pseudoDarkleech-Neutrino-EK-flash-exploit.swf
PAYLOAD:
- SHA256 hash: 93f5c23a06f537088c8f4b0b345c95967ed73eacc7ecd28f0da94353783af555
File name: 2016-09-01-pseudoDarkleech-Neutrino-EK-payload-CrypMIC.dll
IMAGES
Shown above: Desktop of an infected Windows host after rebooting.
FINAL NOTES
Once again, here are the associated files:
- ZIP archive of the pcaps: 2016-09-01-pseudoDarkleech-Neutrino-EK-sends-CrypMIC-ransomware.pcap.zip 287.6 kB (287,594 bytes)
- ZIP archive of the malware: 2016-09-01-pseudoDarkleech-Neutrino-EK-malware-and-artifacts.zip 220.1 kB (220,071 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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