A Sydney man who was in regular communication with senior Islamic State recruiter Mohammed Ali Baryalei, spoke about a plan to kill six or seven random Australians per month in the name of Islamic State, a jury has been told.

Omarjan Azari, 24, is on trial in the NSW Supreme Court for doing an act in preparation for, or planning, a terrorist act in a telephone conversation with Baryalei at 9.03pm on September 15, 2014.

Omarjan Azari is on trial for doing an act in preparation for, or planning, a terrorist act. Credit:Daniel Munoz

On Monday, Mr Azari pleaded guilty to a second charge of financing a terrorist group by sending thousands of dollars overseas to foreign fighters.

In his opening address on Monday, Crown prosecutor Peter Neil, SC, said that Mr Azari recruited a "young, impressionable Muslim boy" to do the transactions as Mr Azari felt he was under too much surveillance.