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Home   »   rig exploit kit

‘Purple Fox’ Fileless Malware with Rookit Component Delivered by Rig Exploit Kit Now Abuses PowerShell

  • Posted on:September 9, 2019 at 5:07 am
  • Posted in:Bad Sites, Exploits, Malware, Vulnerabilities
  • Author:
    Trend Micro
0

This new iteration of Purple Fox that we came across, also being delivered by Rig, has a few new tricks up its sleeve. It retains its rootkit component by abusing publicly available code. It now also eschews its use of NSIS in favor of abusing PowerShell, making Purple Fox capable of fileless infection. It also incorporated additional exploits to its infection chain, most likely as a foolproof mechanism to ensure that it can still infect the system. Purple Fox is a downloader malware; besides retrieving and executing cryptocurrency-mining threats, it can also deliver other kinds of malware.

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Tags: fileless malwarePowershellPurple Foxrig exploit kit

Ransomware as a Service Princess Evolution Looking for Affiliates

  • Posted on:August 9, 2018 at 6:01 am
  • Posted in:Bad Sites, Malware, Ransomware
  • Author:
    Joseph C Chen (Fraud Researcher)
0

We have been observing a malvertising campaign via Rig exploit kit delivering a cryptocurrency-mining malware and the GandCrab ransomware since July 25. On August 1, we found Rig’s traffic stream dropping a then-unknown ransomware. Delving into this seemingly new ransomware, we checked its ransom payment page in the Tor network and saw it was called Princess Evolution (detected by Trend Micro as RANSOM_PRINCESSLOCKER.B), and was actually a new version of the Princess Locker ransomware that emerged in 2016. Based on its recent advertisement in underground forums, it appears that its operators are peddling Princess Evolution as a ransomware as a service (RaaS) and are looking for affiliates.

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Tags: Princess Evolutionransomwarerig exploit kit

Down but Not Out: A Look Into Recent Exploit Kit Activities

  • Posted on:July 2, 2018 at 6:48 am
  • Posted in:Bad Sites, Exploits, Malware, Vulnerabilities
  • Author:
    Trend Micro
0

Exploit kits may be down, but they’re not out. While they’re still using the same techniques that involve malvertisements or embedding links in spam and malicious or compromised websites, their latest activities are making them significant factors in the threat landscape again. This is the case with Rig and GrandSoft, as well as the private exploit kit Magnitude — exploit kits we found roping in relatively recent vulnerabilities to deliver cryptocurrency-mining malware, ransomware, botnet loaders, and banking trojans.

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Tags: CVE-2018-8174exploit kitsGrandSoft Exploit KitMagnitude exploit kitrig exploit kit

Rig Exploit Kit Now Using CVE-2018-8174 to Deliver Monero Miner

  • Posted on:May 31, 2018 at 5:01 am
  • Posted in:Bad Sites, Exploits, Malware, Vulnerabilities
  • Author:
    Trend Micro
0

An exploit kit such as Rig usually starts off with a threat actor compromising a website to inject a malicious script/code that eventually redirects would-be victims to the exploit kit’s landing page. Sometime around February to March last year, however, we saw Rig’s Seamless campaign adding another layer or gate before the actual landing page.

Along with updates in code, we also observed Rig integrating a cryptocurrency-mining malware as its final payload. Based on the latest activities we’ve observed from Rig, they’re now also exploiting CVE-2018-8174, a remote code execution vulnerability patched in May and reported to be actively exploited. The exploit also appears to be from a recently disclosed proof of concept. The security flaw affects systems running Windows 7 and later operating systems, and the exploit works through Internet Explorer (IE) and Microsoft Office documents that use the vulnerable script engine.

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Tags: cryptocurrency minerCVE-2018-4878Internet ExplorerMonerorig exploit kit

Picture Perfect: CryLocker Ransomware Uploads User Information as PNG Files

  • Posted on:September 9, 2016 at 2:30 am
  • Posted in:Ransomware
  • Author:
    Trend Micro
0

Taking advantage of legitimate sites for command-and-control (C&C) purposes is typically done by most malware to avoid rousing suspicion from their targets. While most ransomware directly sends the gathered information to their designated C&C servers, there are some variants that slightly differ. CuteRansomware, for instance, uses Google Docs to pass information from the infected system to the attackers.

One of the latest ransomware families, CryLocker (detected as RANSOM_MILICRY.A), does the same by taking advantage of Imgur, a free online image hosting site that allows users to upload and share photos to their contacts. During our monitoring of activities related to exploit kits, we spotted both Rig and Sundown distributing this threat.

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Tags: CryLockerrig exploit kitsundown exploit kit
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Security Predictions for 2020

  • Cybersecurity in 2020 will be viewed through many lenses — from differing attacker motivations and cybercriminal arsenal to technological developments and global threat intelligence — only so defenders can keep up with the broad range of threats.
    Read our security predictions for 2020.

Business Process Compromise

  • Attackers are starting to invest in long-term operations that target specific processes enterprises rely on. They scout for vulnerable practices, susceptible systems and operational loopholes that they can leverage or abuse. To learn more, read our Security 101: Business Process Compromise.

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