Doublepulsar Exploit Patch Download

Posted By admin  On 21.05.21

MS17-010 SMB RCE Detection. If the machine is missing the MS17-010 patch, the module will check for an existing DoublePulsar (ring 0 shellcode/malware) infection. It can log on as the user ' ' and connect to IPC$. Free Metasploit Download. Get your copy of the world's leading penetration testing tool Download Now. Apr 17, 2017  If a missing patch is found, it will also check for an existing DoublePulsar infection. For those unfamiliar, DoublePulsar is the primary payload used in SMB and RDP exploits in FuzzBunch. Analysis was performed using the EternalBlue SMBv1/SMBv2 exploit against Windows Server 2008 R2 SP1 x64. NSA’s DoublePulsar Kernel Exploit In Use Internet-Wide. Author: Michael Mimoso. Researchers are a bit disheartened that in the six weeks since the patch has been available, so many.

As all of our research is now in Metasploit master repository, there was no reason to confuse everyone by keeping this repository open as there were two versions of everything and due to overwhelming popularity support became a nightmare as this is merely a side project. Please do not make support issues here, as they will not be answered.

Those searching for the scanners:

  • Metasploit: https://www.rapid7.com/db/modules/auxiliary/scanner/smb/smb_ms17_010
  • Python: https://github.com/nixawk/labs/blob/master/MS17_010/smb_exploit.py

Those searching for EternalBlue:

This version disproved the robustness of most existing IDS rules (at the time). Those looking to make IDS rules should look at the final SMB1 Trans2 packet. These contain fixed offsets, however it may be possible to use other addresses. However, the hole in which those offsets lie must always be laid out in a similar manner. There are also numerous other patterns, such as several SMB2 groom requests with null headers and shellcode, as well as the 'free hole' session setups.

Windows kernel shellcode will be in Metasploit as well as submitted to exploit-db when x86 version is completed.

A new malspam campaign has been observed on October 6th 2017 spreading DoublePulsar via EternalBlue exploit, and Hidden Tear ransomware. Based on the delivery documents and ransom notes, the campaign looks to be targeting German speaking users.

EternalBlue exploits a vulnerability in the way Microsoft Server Message Block 1.0 (SMBv1) server handles certain requests giving the attacker an opportunity to execute code on the target server [1]. Microsoft has issued a patch for the vulnerability back in March 2017 but the exploit was used as part of the WannaCry ransomware attack in May 2017 and NotPetya attack in June 2017. DoublePulsar is a backdoor implant that was used alongside EternalBlue. Hidden Tear is an open source ransomware family. Malware authors have built different variants on top of its code base that vary from each other in different ways such as the payment methods, the encryption techniques and which files to consider for encryption [2].

The delivery document (PRELIMINARY_KAPSCH_SECURITY_NIGHT_2017_WORD_DROPPER.doc) uses a macro to drop the malicious payload to the victim machine:

Submitting the delivery document to RSA pre-release What's This File service shows the following malicious characteristics including the auto-launch script to download a payload from a domain over SSL:

The powershell script (launcher.ps1.txt) has the capability of mapping the victim network:

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It can also download a zipped filed 'EB_LAUNCHER.zip' and extracts it on the victim machine:

The request to download 'EB_LAUNCHER.zip' was observed in NetWitness Packets:

Finally, the script proceeds to deliver:

First, it tries to run a powershell script (Execute-EB-Launcher.ps1) to attempt to infect machines in the network that could be vulnerable to EternalBlue exploit and to implant DoublePulsar in case the attempt was successful:

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In this scenario, no neighbor machines were compromised. The malicious powershell script (launcher.ps1.txt) finally downloads and launches a Hidden Tear variant:

Upon execution, the malware encrypts the victim files and presents the following ransom note:

Post-infection traffic is over SSL:

The payment websites were down at the time of this writing.

Delivery documents (SHA256):

  • 8ad3c6df4a96b97279e50a39fe4c2662d8da7699c54cb2582a5c0ae7ae358334
  • 4592803dfdd47c4bfffad037695d3be4566c38ad46132e55c5679c7eb6f029da

EB_LAUNCHER.zip (SHA256):

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  • 22a3a1c609b678b5eed59b48eed47513996998ab99841773d5b0f316fc9e7528

Hidden Tear ransomware (SHA256):

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  • bf9d54c7b894065d6f3ac59da093241ee0c0c545a323c9d8ae8c8f8a9b14d591

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References:

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  1. https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-0144