Plays a role in virus cell tropism, and may be required for efficient virus replication in macrophages. In addition, inhibits the phosphorylation of host TBK1 and IRF7 and thereby negatively regulates the host cGAS signaling pathway and antagonizes IFN-mediated antiviral activity. Interacts with host TBK1 ad IRF7. Belongs to the asfivirus MGF 360 family.