2016-09-07 - PSEUDO-DARKLEECH NEUTRINO EK SENDS CRYPMIC RANSOMWARE
ASSOCIATED FILES:
- ZIP archive of the pcap: 2016-09-07-pseudoDarkleech-Neutrino-EK-sends-CrypMIC-ransomware.pcap.zip 274 kB (273,571 bytes)
- 2016-09-07-pseudoDarkleech-Neutrino-EK-sends-CrypMIC-ransomware.pcap (509,418 bytes)
- ZIP archive of the malware: 2016-09-07-pseudoDarkleech-Neutrino-EK-sends-CrypMIC-malware-and-artifacts.zip 222 kB (221,542 bytes)
- 2016-09-07-page-from-flitecraft.com-with-injected-script.txt (9,021 bytes)
- 2016-09-07-pseudoDarkleech-CrypMIC-decrypt-instructions.bmp (3,276,854 bytes)
- 2016-09-07-pseudoDarkleech-CrypMIC-decrypt-instructions.html (238,187 bytes)
- 2016-09-07-pseudoDarkleech-CrypMIC-decrypt-instructions.txt (1,654 bytes)
- 2016-09-07-pseudoDarkleech-Neutrino-EK-flash-exploit.swf (78,750 bytes)
- 2016-09-07-pseudoDarkleech-Neutrino-EK-landing-page.txt (2,454 bytes)
- 2016-09-07-pseudoDarkleech-Neutrino-EK-payload-CrypMIC.dll (159,232 bytes)
NOTES:
- Thanks again to Baber for informing me about today's 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:
- www.flitecraft.com - Compromised website
- 74.208.12.31 port 80 - badinrigtingsingli.iloveukdeals.co.uk - Neutrino EK
- 74.208.44.14 port 80 - erfolgreichercanteres.ukhomedesign.co.uk - Neutrino EK
- 95.211.225.212 port 443 - attempted TCP connections, no response from the server
- 193.111.140.100 port 443 - post-infection CrypMIC callback, custom encoded and clear text, not HTTPS/SSL/TLS
DOMAINS FROM THE DECRYPT INSTRUCTIONS:
- ccjlwb22w6c22p2k.onion.to
- ccjlwb22w6c22p2k.onion.city
FILE HASHES
FLASH EXPLOIT:
- SHA256 hash: c9813f912684a3177666c37d0fa32ef39d48a187fb9d985ca0889e6efbda9eed
File name: 2016-09-07-pseudoDarkleech-Neutrino-EK-flash-exploit.swf
PAYLOAD:
- SHA256 hash: 98d8366c52ec623fc76713a1f96d9666895df1fc09afeaec3ebff48789e3bae8
File name: 2016-09-07-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 pcap: 2016-09-07-pseudoDarkleech-Neutrino-EK-sends-CrypMIC-ransomware.pcap.zip 274 kB (273,571 bytes)
- ZIP archive of the malware: 2016-09-07-pseudoDarkleech-Neutrino-EK-sends-CrypMIC-malware-and-artifacts.zip 222 kB (221,542 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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