remove http://malwaredb.malekal.com/ and add SystemLookup and Malware Search+++

README.md

@@ -82,7 +82,6 @@ View Chinese translation: [恶意软件分析大合集.md](恶意软件分析大
   rapid identification and actionable context for malware investigations.
 * [Malshare](https://malshare.com) - Large repository of malware actively
   scrapped from malicious sites.
-* [MalwareDB](http://malwaredb.malekal.com/) - Malware samples repository.
 * [Open Malware Project](http://openmalware.org/) - Sample information and
   downloads. Formerly Offensive Computing.
 * [Ragpicker](https://github.com/robbyFux/Ragpicker) - Plugin based malware
@@ -192,6 +191,8 @@ View Chinese translation: [恶意软件分析大合集.md](恶意软件分析大
   - [CybOX - Cyber Observables eXpression](http://cyboxproject.github.io)
   - [MAEC - Malware Attribute Enumeration and Characterization](http://maec.mitre.org/)
   - [TAXII - Trusted Automated eXchange of Indicator Information](http://taxiiproject.github.io)
+* [SystemLookup](https://www.systemlookup.com/) - SystemLookup hosts a collection of lists that provide information on
+  the components of legitimate and potentially unwanted programs.
 * [ThreatMiner](https://www.threatminer.org/) - Data mining portal for threat
   intelligence, with search.
 * [threatRECON](https://threatrecon.co/) - Search for indicators, up to 1000
@@ -790,6 +791,9 @@ the [browser malware](#browser-malware) section.*
 
 * [APT Notes](https://github.com/aptnotes/data) - A collection of papers
   and notes related to Advanced Persistent Threats.
+* [Ember](https://github.com/endgameinc/ember) - Endgame Malware BEnchmark for Research,
+  a repository that makes it easy to (re)create a machine learning model that can be used
+  to predict a score for a PE file based on static analysis.
 * [File Formats posters](https://github.com/corkami/pics) - Nice visualization
   of commonly used file format (including PE & ELF).
 * [Honeynet Project](http://honeynet.org/) - Honeypot tools, papers, and
@@ -809,6 +813,8 @@ the [browser malware](#browser-malware) section.*
   link in description.
 * [Malware Samples and Traffic](http://malware-traffic-analysis.net/) - This
   blog focuses on network traffic related to malware infections.
+* [Malware Search+++](https://addons.mozilla.org/fr/firefox/addon/malware-search-plusplusplus/) Firefox extension allows
+  you to easily search some of the most popular malware databases
 * [Practical Malware Analysis Starter Kit](https://bluesoul.me/practical-malware-analysis-starter-kit/) -
   This package contains most of the software referenced in the Practical Malware
   Analysis book.
@@ -825,10 +831,6 @@ the [browser malware](#browser-malware) section.*
 * [/r/Malware](https://www.reddit.com/r/Malware) - The malware subreddit.
 * [/r/ReverseEngineering](https://www.reddit.com/r/ReverseEngineering) -
   Reverse engineering subreddit, not limited to just malware.
-* [Ember](https://github.com/endgameinc/ember) - Endgame Malware BEnchmark for Research,
-  a repository that makes it easy to (re)create a machine learning model that can be used
-  to predict a score for a PE file based on static analysis.
-