If you are going to be on the run, there is no reason to go to places where Singapore has good security relations. Running to Malaysia and staying in Malaysia is therefore insane.
If you are on the run, head for Indonesia There is no strong extradition treaty which is why many rich fugitives from Indonesia roam free in Singapore. The culture of corruption in Indonesia makes it easy to reinvent yourself a new identity.
If you have made it to as far as Thailand, do not think you are safe. For some reason, Thailand is the preferred destination of Singapore fugitives. As such, there is actually quite a good arrangement to bring fugitives back from Thailand. If you are in Thailand, head toward to the north east Golden Triange region. Border secuirty is lax there so it is very easy to slip into Cambodia or Mynamar. Cambodia is the better bet as Singapore has good relations with the top leaders of Mynamar. Another option would be go to China via Yunan. Border security is tighter there so you will have to pay more to get cross.
