Another way https://www.rusi.org/explore-our-research/publications/commentary/new-frontier-organised-immigration-crime-and-uk-sanctions
"Action Task Force sets out a typical way in which funds are moved: the migrant, or a family member, may visit a hawala dealer (also known as a hawaladar) to pay a fee in advance of the journey, likely handing them cash. The hawaladar will hold onto the funds and then disburse them to the criminal network once the journey has been completed, usually by contacting a hawaladar in the criminals’ country who will provide them with the same value in cash. Unlike other types of criminal activity, the criminal networks running the smuggling operations may have less control of the end-to-end process, but use a series of providers for different elements of the service, necessitating regular payments to suppliers which may often be sent via the hawala system too. While there are legitimate uses for the hawala system and it often provides the only money transfer solution – for example, for the transfer of migrant remittances – an inherent lack of oversight means that it is easy to exploit, whether to launder money, fund terrorism or evade sanctions. "