Treasure Hunt: Dirty Funds is a Side Quest in White Orchard. This quest can be found in the northern section of White Orchard, just east of the old mill, and South of the spy's camp where you can find another hidden treasure quest - Treasure Hunt: Deserter Gold.

The encampment may possibly be overrun by Wolves and Wargs so be careful as you explore the camp and the many containers. As you loot the place, look for the main chest that contains a Scrawled Note. The note seems to indicate bandits have made camp not far from here in the hills. Follow the quest marker further East and to the North, near the Cackler Bridge signpost.

Here there will be a group of bandits. two to three of them will be at the foot of the camp, while another one or two will be farther up the hill (one with a bow and arrows). The last two bandits will be on the other side of the hill, including a level 4 Deserter Leader with a shield. This can make him a tough opponent to crack - try getting behind him with a short dodge and follow up with Aard to knock him off balance, or simply wait out his attacks and counter them with a well-timed parry.

Once the deserters are gone, loot the entire area and head inside the tent to open all the big chests.

Note that if you have found this bandit camp prior to locating the first site, reading the Scrawled Note will no longer start the quest.