Malware Analyst tools required and some examples of them:
Disassembler – IDA Pro
Debugger – OllyDbg, WinDbg
System Monitor – Process Monitor, RegShot. Process Explorer
Network Monitor – TCP View, Wireshark
Packer Identifier – PEID
Unpacking Tools – Qunpack. GUNPacker
Binary Analysis Tools – PE Explorer, Malcode Analysts Pack
Code Analysis Tools – LordPE, ImpRec
Sources:
Free Toolkits for Automating Malware Analysis