11:10 AM

'Hacker Door' Backdoor Resurfaces as RAT a Decade Later

Sophisticated backdoor re-emerges as a RAT more than a decade after its 2004 public release, with updated advanced malicious functionality.

A sophisticated remote access Trojan (RAT) dubbed Hacker Door by researchers has appeared in active attacks and sharing many similarities to a backdoor of the same name that was released in 2004 and last updated in 2005. The new Hacker Door has updated and advanced functionality, report researchers at Cylance.

Hacker Door contains a backdoor and rootkit components. It engages in a set of typical remote commands once active, Cylance researchers say, including grabbing screenshots and files, running other processes and commands, opening Telnet and RDP servers, and stealing Windows credentials during current sessions.

Some of its functionality includes using a signed stolen certificate to evade detection by security software designed to search for unsigned code, notes a ZDNet report. Cylance researchers note Hacker Door is largely undocumented malware and has seldom been seen in the wild.

Hacker Door appears to be used by Winnti, a Chinese advanced persistent threat group, notes Cylance. And Winnti appears to be targeting the aerospace industry, the researchers discovered.

Read more about Hacker Door here.

Dark Reading's Quick Hits delivers a brief synopsis and summary of the significance of breaking news events. For more information from the original source of the news item, please follow the link provided in this article. View Full Bio

Comment  | 
Print  | 
More Insights
Newest First  |  Oldest First  |  Threaded View
User Rank: Ninja
10/20/2017 | 7:26:09 AM
Malware Signatures
This is a perfect example why only protecting against signatures is not enough and why heuristics is pivotal. By changing a few strings of code the malware variant obtains a different hash rendering the signature ineffective. This allows for older strains to make a comeback with minimal effort.
User Rank: Apprentice
10/19/2017 | 2:07:32 AM
Who Does What in Cybersecurity at the C-Level
Steve Zurier, Freelance Writer,  3/16/2018
New 'Mac-A-Mal' Tool Automates Mac Malware Hunting & Analysis
Kelly Jackson Higgins, Executive Editor at Dark Reading,  3/14/2018
IoT Product Safety: If It Appears Too Good to Be True, It Probably Is
Pat Osborne, Principal - Executive Consultant at Outhaul Consulting, LLC, & Cybersecurity Advisor for the Security Innovation Center,  3/12/2018
Register for Dark Reading Newsletters
White Papers
Current Issue
How to Cope with the IT Security Skills Shortage
Most enterprises don't have all the in-house skills they need to meet the rising threat from online attackers. Here are some tips on ways to beat the shortage.
Flash Poll
[Strategic Security Report] Navigating the Threat Intelligence Maze
[Strategic Security Report] Navigating the Threat Intelligence Maze
Most enterprises are using threat intel services, but many are still figuring out how to use the data they're collecting. In this Dark Reading survey we give you a look at what they're doing today - and where they hope to go.
Twitter Feed
Dark Reading - Bug Report
Bug Report
Enterprise Vulnerabilities
From DHS/US-CERT's National Vulnerability Database
Published: 2017-05-09
NScript in mpengine in Microsoft Malware Protection Engine with Engine Version before 1.1.13704.0, as used in Windows Defender and other products, allows remote attackers to execute arbitrary code or cause a denial of service (type confusion and application crash) via crafted JavaScript code within ...

Published: 2017-05-08
unixsocket.c in lxterminal through 0.3.0 insecurely uses /tmp for a socket file, allowing a local user to cause a denial of service (preventing terminal launch), or possibly have other impact (bypassing terminal access control).

Published: 2017-05-08
A privilege escalation vulnerability in Brocade Fibre Channel SAN products running Brocade Fabric OS (FOS) releases earlier than v7.4.1d and v8.0.1b could allow an authenticated attacker to elevate the privileges of user accounts accessing the system via command line interface. With affected version...

Published: 2017-05-08
Improper checks for unusual or exceptional conditions in Brocade NetIron 05.8.00 and later releases up to and including 06.1.00, when the Management Module is continuously scanned on port 22, may allow attackers to cause a denial of service (crash and reload) of the management module.

Published: 2017-05-08
Nextcloud Server before 11.0.3 is vulnerable to an inadequate escaping leading to a XSS vulnerability in the search module. To be exploitable a user has to write or paste malicious content into the search dialogue.