2016-12-21 - PSEUDO-DARKLEECH RIG-V FROM 195.133.201.36 SENDS CERBER RANSOMWARE
ASSOCIATED FILES:
- ZIP archive of the pcap: 2016-12-21-pseudoDarkleech-Rig-V-sends-Cerber-ransomware.pcap.zip 386 kB (386,220 bytes)
- 2016-12-21-pseudoDarkleech-Rig-V-sends-Cerber-ransomware.pcap (449,018 bytes)
- ZIP archive of the malware: 2016-12-21-pseudoDarkleech-Rig-V-sends-Cerber-malware-and-artifacts.zip 599 kB (598,841 bytes)
- 2016-12-21-Cerber-decryption-instructions_README_LQ56_.hta (66,409 bytes)
- 2016-12-21-Cerber-decryption-instructions_README_LQ56_.jpg (305,430 bytes)
- 2016-12-21-page-from-laykni.com-with-injected-pseudoDarkleech-script.txt (46,665 bytes)
- 2016-12-21-pseudoDarkleech-Rig-V-artifact-OTTYUADAF.txt (1,137 bytes)
- 2016-12-21-pseudoDarkleech-Rig-V-flash-exploit.swf (14,088 bytes)
- 2016-12-21-pseudoDarkleech-Rig-V-landing-page.txt (5,383 bytes)
- 2016-12-21-pseudoDarkleech-Rig-V-payload-Cerber-rad0FB04.tmp.exe (292,324 bytes)
BACKGROUND ON RIG EXPLOIT KIT:
- I'm routinely intercepting 2 versions of Rig EK as classified in an October 2016 blog post by Kafeine.
- Rig-V: a "VIP version" with new URL patterns and RC4 encryption for the payload. Used by the Afraidgate, EITest, and pseudoDarkleech campaigns.
- Rig-E: a variant with old URL patterns, but uses with RC4 encryption for the payload. Also known as Empire Pack. I often see Rig-E used by the EITest campaign.
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
OTHER NOTES:
- My thanks to Baber, who emailed me information about the compromised website used to kick off this infection traffic.
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:
- laykni.com - Compromised site
- 195.133.201.36 port 80 - art.2survival.com - Rig-V
- 77.4.1.0 to 77.4.1.31 (77.4.1.0/27) UDP port 6892 - Cerber post-infection UDP traffic
- 91.239.24.0 to 91.239.25.255 (91.239.24.0/23) UDP port 6892 - Cerber post-infection UDP traffic
- 84.200.4.130 port 80 - ffoqr3ug7m726zou.1bpfr1.top - Cerber post-infection HTTP traffic
FILE HASHES
FLASH EXPLOIT:
- SHA256 hash: 0744ba67c5f8210fcdcf4acb328df68780e96d10f2c68b8eddbb9a355bca213e (14,088 bytes)
File description: Rig-V Flash exploit seen on 2016-12-21
PAYLOAD (CERBER RANSOMWARE):
- SHA256 hash: 35167e6aab373740e63cfe77a8aa28a9d2cdb759dad57e8027373c87e9d1d7ef (292,324 bytes)
File path: C:\Users\[Username]\AppData\Local\Temp\rad0FB04.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: 2016-12-21-pseudoDarkleech-Rig-V-sends-Cerber-ransomware.pcap.zip 386 kB (386,220 bytes)
- ZIP archive of the malware: 2016-12-21-pseudoDarkleech-Rig-V-sends-Cerber-malware-and-artifacts.zip 599 kB (598,841 bytes)
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