As avast has a large foothold in the Brazilian av market,
so understandably Brazillian malcreants especially try to circumvent and harden against avast! detection as
one can conclude from this report: https://www.virustotal.com/nl/ip-address/200.98.196.11/information/
Also see: https://www.virustotal.com/nl/domain/renausi.com.br/information/
Re: http://www.threatexpert.com/report.aspx?md5=56c62ba75e8a8364739f1b875e37a649
and here at the beginning phase of the av detection cycle: https://malwr.com/analysis/ZjgzMzE1NGNjNzgwNDRhZGFkODQzZjBiYTE5NmU2OTQ/
(shellcode malware)
In Brazil some malcreants call avast! the “Brazilian av sieve”, this should not be so,
therefore what Eddy suggests is the most sensible thing to do - report to virus AT avast dot com.

polonus