Netskope Threat Labs

Lethic

ATP Sandbox Adv. HeuristicsAV

Lethic is a spam botnet that dates back to 2008 and became known for distributing low level pharmaceutical spam. Infected machines relay junk email at scale for its operators, which made the family a fixture of the spam botnets of its era.

First seen
February 2022
Last seen
October 2026
Alert Name
Gen:Variant.Lethic.1
Trojan.Lethic.Gen.1
Trojan.Lethic.Gen.11
Trojan.Lethic.Gen.14
Trojan.Lethic.Gen.2
Trojan.Lethic.Gen.3
Trojan.Lethic.Gen.4
Trojan.Lethic.Gen.5
Trojan.Lethic.Gen.7
Trojan.Lethic.Gen.9