RAT
Peppy RAT
Peppy is a Python-based RAT with the majority of its appearances having similarities or definite overlap with MSIL/Crimson appearances.
Peppy RAT is a Windows rat operated by Operation C-Major.
Background
Peppy is a Python-written RAT whose sightings largely resemble or clearly overlap with MSIL/Crimson activity. It talks to its C&C over HTTP and depends on SQLite for much of its internal logic and for tracking files it has exfiltrated. Its main goal appears to be the automatic theft of potentially valuable files and keystroke logs. Once Peppy establishes contact with its C&C, it starts keylogging and stealing files according to configurable search criteria, sending the files out via HTTP POST requests.
Source: Malpedia (Fraunhofer FKIE).