Dark Reading is part of the Informa Tech Division of Informa PLC

This site is operated by a business or businesses owned by Informa PLC and all copyright resides with them.Informa PLC's registered office is 5 Howick Place, London SW1P 1WG. Registered in England and Wales. Number 8860726.

Cloud

5/28/2015
03:55 PM
Connect Directly
Twitter
LinkedIn
RSS
E-Mail
100%
0%

'Tox' Offers Ransomware As A Service

The ransomware is free to use but site retains 20 percent of any ransom that is collected, McAfee researcher says.

The ready availability of packaged easy-to-use malware kits in underground markets has significantly lowered the barrier to entry for aspiring cybercriminals, and now they have one more tool option.

A researcher at Intel's McAfee Labs has unearthed what amounts to a ransomware-as-a-service kit for building and deploying ransomware. Dubbed "Tox," the kit requires very little technical skills to use and appears designed to let almost anyone deploy ransomware in three easy steps.

Jim Walter, the director of advanced threat research for Intel Security said he stumbled across Tox earlier this month when sifting through a stream of  dark web data. In the days since then, the site hosting the malware kit has been updated with a new FAQ and design. But the core functionality has remained the same, Walter said in a post.

Tox is free to set up and use. But the catch is that the site hosting the kit retains 20% of any ransom that is paid by victims to attackers who use the software.

Tox runs on the Tor network and is set up to receive payments via Bitcoin, allowing for some degree of anonymity for the attackers, Walter said. The malware works as advertised, so people can use it to essentially encrypt data on victim computers and demand a ransom in return for unencrypting it.

"Out of the gate, the standard of antimalware evasion is fairly high, meaning the malware's targets would need additional controls in place," such as host intrusion prevention, whitelisting and sandboxing to catch or prevent Tox, Walter wrote.

What makes Tox interesting is just how easy it is for almost anybody to use it. Would-be cybercriminals have to simply register with the site, enter the ransom amount they want into the specified filed, submit a "cause" for launching the attack, and correctly guess the CAPTCHA.

The three-step process creates a malicious 2MB executable file disguised as a screensaver file, which users can distribute to victims of their choice.

When the malware is executed, it downloads the CURL command-line tool and a TOR client on the infected system. Once the malware encrypts all the contents on the target computer, it serves up a standard ransomware message instructing the victim to pay a fine in Bitcoins for the data to be unencrypted.

A screenshot of the message posted on Walter’s blog shows it provides detailed information on how the victim can buy Bitcoins and where to submit the payment. It tells victims to expect their data to be decrypted in about two hours after ransom payment typically, and provides a link where they can get help if the data is not decrypted after the ransom has been paid.

"You can also spam this mailbox with useless stuff or wishing me death, so that mail sent from real people who actually need help won't be read," the message informs victims.

The Tox site monitors all the installs and any money paid by the victims. In order to receive money, the Tox user has to supply a receiving Bitcoin address.

From a technical standpoint, Vox's code appears to lack much sophistication and efficiency and contains several identifying strings within the code, McAfee's Walter said.  But it is easy to use and fully functional. Expect to see more sophisticated encryption and evasion techniques used in similar tools going forward, he said.

Jai Vijayan is a seasoned technology reporter with over 20 years of experience in IT trade journalism. He was most recently a Senior Editor at Computerworld, where he covered information security and data privacy issues for the publication. Over the course of his 20-year ... View Full Bio

Comment  | 
Print  | 
More Insights
Comments
Newest First  |  Oldest First  |  Threaded View
Where Businesses Waste Endpoint Security Budgets
Kelly Sheridan, Staff Editor, Dark Reading,  7/15/2019
US Mayors Commit to Just Saying No to Ransomware
Robert Lemos, Contributing Writer,  7/16/2019
Register for Dark Reading Newsletters
White Papers
Video
Cartoon Contest
Current Issue
Building and Managing an IT Security Operations Program
As cyber threats grow, many organizations are building security operations centers (SOCs) to improve their defenses. In this Tech Digest you will learn tips on how to get the most out of a SOC in your organization - and what to do if you can't afford to build one.
Flash Poll
The State of IT Operations and Cybersecurity Operations
The State of IT Operations and Cybersecurity Operations
Your enterprise's cyber risk may depend upon the relationship between the IT team and the security team. Heres some insight on what's working and what isn't in the data center.
Twitter Feed
Dark Reading - Bug Report
Bug Report
Enterprise Vulnerabilities
From DHS/US-CERT's National Vulnerability Database
CVE-2018-17210
PUBLISHED: 2019-07-20
An issue was discovered in PrinterOn Central Print Services (CPS) through 4.1.4. The core components that create and launch a print job do not perform complete verification of the session cookie that is supplied to them. As a result, an attacker with guest/pseudo-guest level permissions can bypass t...
CVE-2019-12934
PUBLISHED: 2019-07-20
An issue was discovered in the wp-code-highlightjs plugin through 0.6.2 for WordPress. wp-admin/options-general.php?page=wp-code-highlight-js allows CSRF, as demonstrated by an XSS payload in the hljs_additional_css parameter.
CVE-2019-9229
PUBLISHED: 2019-07-20
An issue was discovered on AudioCodes Mediant 500L-MSBR, 500-MBSR, M800B-MSBR and 800C-MSBR devices with firmware versions F7.20A to F7.20A.251. An internal interface exposed to the link-local address 169.254.254.253 allows attackers in the local network to access multiple quagga VTYs. Attackers can...
CVE-2019-12815
PUBLISHED: 2019-07-19
An arbitrary file copy vulnerability in mod_copy in ProFTPD up to 1.3.5b allows for remote code execution and information disclosure without authentication, a related issue to CVE-2015-3306.
CVE-2019-13569
PUBLISHED: 2019-07-19
A SQL injection vulnerability exists in the Icegram Email Subscribers & Newsletters plugin through 4.1.7 for WordPress. Successful exploitation of this vulnerability would allow a remote attacker to execute arbitrary SQL commands on the affected system.