Symantec published their analysis of Longhorn, an advanced threat actor that can be easily compared with Regin, ProjectSauron, Equation or Duqu2 in terms of its complexity. The Lamberts first came to the attention of the ITSec community in 2014, when FireEye discovered an attack using a zero day vulnerability (CVE-2014-4148) The attack leveraged malware we called BlackLambert, which was used to target a high profile organization in Europe.”]
Source: https://securelist.com/unraveling-the-lamberts-toolkit/77990/