Malware
OctoberSeventh
aka ESET Wiper
Emanuele De Lucia summarizes that this wiper was sent to potential targets in phishing mails that impersonated ESET as a follow up to a breach of its Israeli distributor Comsecure.
OctoberSeventh, also known as ESET Wiper, is a Windows malware family.
Background
As summarized by Emanuele De Lucia, this wiper reached intended victims through phishing emails posing as ESET, following a breach of the company's Israeli distributor Comsecure.
Source: Malpedia (Fraunhofer FKIE).