** Shares of ANZ Group ANZ.AX fall 3.5% to A$28.62

** Stock hits lowest level since March 25

** Australia's bank regulator accepts court-enforceable undertaking from ANZ to address the lender's non-financial risk management practices and risk culture

** The regulator hikes capital add-on for ANZ to A$1 billion ($626.70 million) from A$750 million

** Stock up 3.9% this year, as of last close

($1 = 1.5957 Australian dollars)

(Reporting by Sherin Sunny in Bengaluru)

((Sherin.Sunny@thomsonreuters.com))