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The Kelihos botnet has kept a low profile following takedown attempts a few years ago when it was highly active, but has shown significant spikes in activity recently, MalwareTech warns.
The botnet’s infections remained very low over the past years, while the activity it focused on was spamming stock pump and dump schemes or pharmaceutical scams, researchers say. Following each campaign, the botnet would remain dormant for weeks or months, but this modus operandi has changed in mid-June, when Kelihos started spamming other malware.
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