impscan IndexError when no calls are found

C:\Micha\Forensics\Volatility-2.1a>python vol.py impscan -f 
D:\X-Ways-Images\zeus.vmem -p 1724 --base 0x01600000
Volatile Systems Volatility Framework 2.1_rc1
IAT        Call       Module               Function
---------- ---------- -------------------- --------
Traceback (most recent call last):
  File "vol.py", line 185, in <module>
    main()
  File "vol.py", line 176, in main
    command.execute()
  File "C:\Micha\Forensics\Volatility-2.1a\volatility\commands.py", line 111, in execute
    func(outfd, data)
  File "C:\Micha\Forensics\Volatility-2.1a\volatility\plugins\malware\impscan.py", line 358, in render_text
    for iat, call, mod, func in data:
  File "C:\Micha\Forensics\Volatility-2.1a\volatility\plugins\malware\impscan.py", line 338, in calculate
    forward = True)
  File "C:\Micha\Forensics\Volatility-2.1a\volatility\plugins\malware\impscan.py", line 130, in _vicinity_scan
    start_addr = sortedlist[0]
IndexError: list index out of range

Original issue reported on code.google.com by michael.hale@gmail.com on 11 Jul 2012 at 3:41

misael1986 / volatility

impscan IndexError when no calls are found #300