Who is peering this CPP-user yEnc spam?

Who is peering this spam?

From: CPP <CPP-user@domain.com>
Sender: CPP-user@domain.com
Newsgroups:
alt.california,alt.checkmate,alt.chinese.text,alt.christnet.bible,alt.christnet.christianlife,alt.christnet.christnews,alt.comp.freeware,alt.comp.os.windows-10
Subject: (????) [02/14] - "CyberLink PowerDVD Ultra v24.0.0623.62
Pre-Cracked {CracksHash}.par2" yEnc (1/1)
Organization: Camelsystem
X-Newsposter: Camelsystem Powerpost (Modified POWER-POST
http://powerpost.camelsystem.nl)
Lines: 180
Message-ID: <QlnbQ.86648$ivTc.45247@fx43.iad>
X-Complaints-To: abuse(at)newshosting.com
NNTP-Posting-Date: Wed, 09 Jul 2025 05:45:20 UTC
Date: Wed, 09 Jul 2025 05:45:20 GMT
X-Received-Bytes: 23675
X-Original-Bytes: 23623
Xref: sewer alt.california:139177 alt.checkmate:820104
alt.chinese.text:74818 alt.christnet.bible:11766
alt.christnet.christianlife:476292 alt.comp.freeware:195919
alt.comp.os.windows-10:189294

It reminds me of the days when Google Groups was spamming us to death.
Here's another one, where they're all like this.
I don't know enough to figure out where they're coming from.

Can you?