Vietcombank sold the greenback at VND26,060, down 0.11% from Thursday morning. At unofficial exchange points, the currency held firm at VND26,050.
The State Bank of Vietnam lowered its reference rate by 0.02% to VND25,637.
Globally, the dollar limped towards its first weekly loss in five weeks as lower US yields eroded the currency's appeal, Reuters reported.
The dollar index languishing near 102 following a sharp pullback from Wednesday's 1-1/2-year high near 103. The index is down 0.2% for the week.
The euro pulled itself up from as low as $1.1113 on Wednesday to sit at $1.1217 on Friday. Sterling was steady at $1.3278 following a 0.6% jump on Thursday. The dollar was little changed at around 158 yen.
Investors will be focusing on Fed Chair Warsh's fireside chat at the International Monetary Fund-World Bank meetings in Bangkok for clues on the US monetary policy path.