Friday, April 12, 2024

Hackers using Internet Explorer (IE) Remote Code Execution Flaw in Rig Exploit Kit to Compromise Windows PC

Hackers now using Rig Exploit Kit to exploiting the Internet Explorer (IE) remote code execution vulnerability CVE-2018-8174) with integrating a cryptocurrency-mining malware to mine Monero by Compromising Windows PC.

This vulnerability affected Windows 7 and later versions also this powerful exploit work via Microsoft Office documents and Internet Explorer (IE).

Rig Exploit Kit delivered various payload for many malware and ransomware families such as  GandCrab ransomware and Panda Banker. In this case, hackers behind the Rig Exploit Kit employing an exploit for  CVE-2018-8174 .

Rig Exploit Kit is capable of Exploit the various vulnerabilities using a vulnerable application such as adobe flash player and IE.

Mainly Rig compromising users by injecting a malicious script/code in compromised websites and redirect the visitors to the exploit kit’s landing page where Rig delivery the Dangerous Malware.

Currently, Rig using Internet Explorer (IE) based remote code execution vulnerability CVE-2018-8174) that has been patched in May and reported to be actively exploited.

Researchers Already released a Metasploit module for the exploitation of the  CVE-2018-8174 after the PoC code was available online.

    RIG launching code exploiting CVE-2018-8174 against IE11 on Windows 7

Rig Exploit Kit Campaign’s Infection Chain

Rig Exploit Kit mainly using this exploit against vulnerable Windows VBScript Engine that contains remote code execution vulnerability (CVE-2018-8174 ) using Internet Explorer (IE) and Microsoft Office documents.

This vulnerability could corrupt memory in such a way that an attacker could execute arbitrary code in the context of the current user with Rig Exploit Kit.

Initially, Rig using malvertising campaign that contains hidden iframe that redirects victims to Rig’s landing page which is holding an exploit for CVE-2018-8174 and shellcode.

According to Trend Micro research,  This enables remote code execution of the shellcode obfuscated in the landing page. After successful exploitation, a second-stage downloader is retrieved, which appears to be a variant of SmokeLoader due to the URL.

Finally, it downloads the Original payload that used to Mine Monero cryptocurrency. Exploit kits can expose victims to multifarious threats — from information theft and file encryption to malicious cryptocurrency mining. Regularly applying the latest patches is an effective defense. Trend Micro said.


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BALAJI is an Ex-Security Researcher (Threat Research Labs) at Comodo Cybersecurity. Editor-in-Chief & Co-Founder - Cyber Security News & GBHackers On Security.

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