The agency picked up the business following a two-way pitch against the incumbent agency, TBWA\Worldwide.
Pernod Ricard initially briefed a TBWA team, which was made up of creatives from around the network, to submit ideas for a brief to create a global advertising campaign.
However, the company also approached Euro RSCG with the brief and asked the agency to supply ideas.
When TBWA's work didn't score highly enough in the global research, the brief turned into a full pitch.
The work will run mainly in Asia and the US, where the brand has a strong presence, with some exposure in the UK market.
Chivas Regal is now available in more than 200 countries and in 2007, the brand sold more than four million nine-litre cases worldwide.
The company's media is handled by Aegis Media, which retained the £100 million international Pernod Ricard account in December last year.
Euro RSCG denied it had been appointed. Pernod Ricard did not return calls.