2016-12-13 - PSEUDO-DARKLEECH RIG-V FROM 195.133.48.182 SENDS CERBER RANSOMWARE
ASSOCIATED FILES:
- ZIP archive of the pcap: 2016-12-13-pseudoDarkleech-Rig-V-sends-Cerber-ransomware.pcap.zip 8888 kB (888,243 bytes)
- 2016-12-13-pseudoDarkleech-Rig-V-sends-Cerber-ransomware.pcap (1,001,972 bytes)
- ZIP archive of the malware: 2016-12-13-pseudoDarkleech-Rig-V-sends-Cerber-malware-and-artifacts.zip 499 kB (499005 bytes)
- 2016-12-13-Cerber-decryption-instructions-tmp9453.bmp (1,920,054 bytes)
- 2016-12-13-Cerber-decryption-instructions_README_TV7QWCYC_.hta (66,435 bytes)
- 2016-12-13-page-from-joellipman.com-with-injected-pseudoDarkleech-script.txt (68,868 bytes)
- 2016-12-13-pseudoDarkleech-Rig-V-flash-exploit.swf (12,397 bytes)
- 2016-12-13-pseudoDarkleech-Rig-V-landing-page.txt (5,380 bytes)
- 2016-12-13-pseudoDarkleech-Rig-V-payload-Cerber-rad8B9E2.tmp.exe (257,903 bytes)
BACKGROUND ON RIG EXPLOIT KIT:
- I'm currently tracking 3 versions of Rig EK as classified in an October 2016 blog post by Kafeine.
- Rig-V: a "VIP version" with new URL patterns & RC4 payload encryption. Used by the Afraidgate & pseudoDarkleech campaigns. Sometimes used by the EITest campaign.
- Rig-E: a variant with old Rig EK URL patterns & RC4 payload encryption. Also known as Empire Pack. I often see Rig-E used by the EITest campaign.
- Rig standard: uses new URL patterns introduced by Rig-V, but old obfuscation (ASCII string to XOR the payload binary). I haven't seen this one in a while.
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 from the compromised site.
Shown above: Pcap of the infection traffic filtered in Wireshark.
ASSOCIATED DOMAINS:
- joellipman.com - Compromised site
- 195.133.48.182 port 80 - feel.easytrimmd.com - Rig-V
- 1.11.32.0 to 1.11.32.31 (1.11.32.0/27) UDP port 6892 - Cerber post-infection UDP traffic
- 55.15.15.0 to 55.15.15.31 (55.15.15.0/27) UDP port 6892 - Cerber post-infection UDP traffic
- 194.165.16.0 to 194.165.17.255 (194.165.16.0/23) UDP port 6892 - Cerber post-infection UDP traffic
- 37.10.71.202 port 80 - ffoqr3ug7m726zou.1mznhc.top - Cerber post-infection HTTP traffic
FILE HASHES
FLASH EXPLOIT:
- SHA256 hash: 0d957c720df06caeba96bb4d193c783f9acf8f3fb9d5e5d270ae517b3a88dad4 (10,096 bytes)
File description: Rig-V Flash exploit seen on 2016-12-13
PAYLOAD (CERBER RANSOMWARE):
- SHA256 hash: 67fb3f0bc18232bf59ab4191e8359c6c2d713f6e590c14e6bcfc4fe68cfcc25e (257,903 bytes)
File path: C:\Users\[Username]\AppData\Local\Temp\rad8B9E2.tmp.exe
IMAGES
Shown above: Desktop of an infected Windows host.
FINAL NOTES
Once again, here are the associated files:
- ZIP archive of the pcap: 2016-12-13-pseudoDarkleech-Rig-V-sends-Cerber-ransomware.pcap.zip 8888 kB (888,243 bytes)
- ZIP archive of the malware: 2016-12-13-pseudoDarkleech-Rig-V-sends-Cerber-malware-and-artifacts.zip 499 kB (499005 bytes)
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