Malware
Serpent
According to Proofpoint, this is a backdoor written in Python, used in attacks against French entities in the construction, real estate, and government industries.
Serpent is a Python malware family.
Background
Proofpoint reports that this is a Python-based backdoor leveraged in campaigns targeting French organizations across the construction, real estate, and government sectors.
Source: Malpedia (Fraunhofer FKIE).