THESE ARE SOME BASIC TOOLS, THOUGH NOWADAYS MALWARES/RANSOMWARE/STEALERS HAVE THE ABILITY TO BYPASS EVERYTHING.
Static Analysis tools:
PEview => http://wjradburn.com/software/
CFF Explorer => http://www.ntcore.com/exsuite.php
PEinsider => http://cerbero.io/peinsider/
ILspy => http://ilspy.net/
System Internal Suite (strings) => https://technet.microsoft.com/en-
us/sysinternals/bb842062.aspx
JD-GUI => http://jd.benow.ca/
Dex2Jar => https://github.com/pxb1988/dex2jar
Resource Hacker => http://www.angusj.com/resourcehacker/
Dependecy Walker => http://www.dependencywalker.com/
PEstudio => https://www.winitor.com/
HashCalc => http://www.slavasoft.com/hashcalc/
Automatic Analysis
VirusTotal => https://www.virustotal.com/
Malware Analysis => https://malwr.com/
Hybrit-Analysis => https://www.hybrid-analysis.com/
Threat Expert => http://www.threatexpert.com/
Cuckoo => http://www.cuckoosandbox.org/
Advanced Dynamic Analysis
IDA => https://www.hex-rays.com/products/ida/
Olly Debugger => http://www.ollydbg.de/
Immunity Debugger => http://www.immunityinc.com/products/debugger/
WinDbg => http://www.windbg.org
Static Analysis tools:
PEview => http://wjradburn.com/software/
CFF Explorer => http://www.ntcore.com/exsuite.php
PEinsider => http://cerbero.io/peinsider/
ILspy => http://ilspy.net/
System Internal Suite (strings) => https://technet.microsoft.com/en-
us/sysinternals/bb842062.aspx
JD-GUI => http://jd.benow.ca/
Dex2Jar => https://github.com/pxb1988/dex2jar
Resource Hacker => http://www.angusj.com/resourcehacker/
Dependecy Walker => http://www.dependencywalker.com/
PEstudio => https://www.winitor.com/
HashCalc => http://www.slavasoft.com/hashcalc/
Automatic Analysis
VirusTotal => https://www.virustotal.com/
Malware Analysis => https://malwr.com/
Hybrit-Analysis => https://www.hybrid-analysis.com/
Threat Expert => http://www.threatexpert.com/
Cuckoo => http://www.cuckoosandbox.org/
Advanced Dynamic Analysis
IDA => https://www.hex-rays.com/products/ida/
Olly Debugger => http://www.ollydbg.de/
Immunity Debugger => http://www.immunityinc.com/products/debugger/
WinDbg => http://www.windbg.org