Attacks/Breaches

6/28/2017
12:15 PM
100%
0%

Researchers Find 'Vaccine' for Global Ransomware Attack

A vaccine, not a killswitch, has been discovered to prevent the Petya/NotPetya ransomware from infecting machines.

Researchers have yet to discover a killswitch that would prevent the spread of this week's massive ransomware outbreak, but one has found a "vaccine" that can halt the spread of the attack, reports BleepingComputer.

The rapidly spreading ransomware hit businesses, including those in critical infrastructure, across Russia, Ukraine, France, Netherlands, Spain, India, and Denmark. Some experts found similarities with the Petya malware, including its encryption of the Master Boot Record (MBR) on infected systems. Others say this malware hasn't been previously seen and call it NotPetya.

Amit Serper, a security researcher with Cybereason, discovered the ransomware operates by searching for a local file, and will exit the encryption process if the file already existed on the disk. Victims can block the ransomware from executing by creating this file on their machines.

To implement the vaccination, create a file called "perfc" in the "C:\Windows" folder and set it to read-only. Researchers call this a vaccination, not a killswitch, because it only vaccinates the machine where it's stored. A killswitch could be turned on to prevent all incidents of this ransomware.

Read more details 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
Comments
Newest First  |  Oldest First  |  Threaded View
RyanSepe
100%
0%
RyanSepe,
User Rank: Ninja
6/28/2017 | 12:25:27 PM
Nifty
Wow, this is nifty. Discovering the trigger and inserting it before the malware creates it maliciously is quite smart. What isn't smart however on the end of the creators of the malware is creating a check predicated on only one file.
New Free Tool Scans for Chrome Extension Safety
Dark Reading Staff 2/21/2019
Making the Case for a Cybersecurity Moon Shot
Adam Shostack, Consultant, Entrepreneur, Technologist, Game Designer,  2/19/2019
Register for Dark Reading Newsletters
White Papers
Video
Cartoon
Current Issue
5 Emerging Cyber Threats to Watch for in 2019
Online attackers are constantly developing new, innovative ways to break into the enterprise. This Dark Reading Tech Digest gives an in-depth look at five emerging attack trends and exploits your security team should look out for, along with helpful recommendations on how you can prevent your organization from falling victim.
Flash Poll
How Enterprises Are Attacking the Cybersecurity Problem
How Enterprises Are Attacking the Cybersecurity Problem
Data breach fears and the need to comply with regulations such as GDPR are two major drivers increased spending on security products and technologies. But other factors are contributing to the trend as well. Find out more about how enterprises are attacking the cybersecurity problem by reading our report today.
Twitter Feed
Dark Reading - Bug Report
Bug Report
Enterprise Vulnerabilities
From DHS/US-CERT's National Vulnerability Database
CVE-2019-9015
PUBLISHED: 2019-02-22
A Path Traversal vulnerability was discovered in MOPCMS through 2018-11-30, leading to deletion of unexpected critical files. The exploitation point is in the "column management" function. The path added to the column is not verified. When a column is deleted by an attacker, the correspond...
CVE-2019-9016
PUBLISHED: 2019-02-22
An XSS vulnerability was discovered in MOPCMS through 2018-11-30. There is persistent XSS that allows remote attackers to inject arbitrary web script or HTML via the form[name] parameter in a mod=column request, as demonstrated by the /mopcms/X0AZgf(index).php?mod=column&ac=list&menuid=28&am...
CVE-2018-20784
PUBLISHED: 2019-02-22
In the Linux kernel before 4.20.2, kernel/sched/fair.c mishandles leaf cfs_rq's, which allows attackers to cause a denial of service (infinite loop in update_blocked_averages) or possibly have unspecified other impact by inducing a high load.
CVE-2019-9003
PUBLISHED: 2019-02-22
In the Linux kernel before 4.20.5, attackers can trigger a drivers/char/ipmi/ipmi_msghandler.c use-after-free and OOPS by arranging for certain simultaneous execution of the code, as demonstrated by a "service ipmievd restart" loop.
CVE-2019-9004
PUBLISHED: 2019-02-22
In Eclipse Wakaama (formerly liblwm2m) 1.0, core/er-coap-13/er-coap-13.c in lwm2mserver in the LWM2M server mishandles invalid options, leading to a memory leak. Processing of a single crafted packet leads to leaking (wasting) 24 bytes of memory. This can lead to termination of the LWM2M server afte...