> JapanHacked_
[Resolved][Severity: Major][Malware]

en Japan: an employee's PC was infected with Emotet, and suspicious mail using staff and site names went to customers

An employee opened an attachment in mail posing as a business partner and the PC was infected. Names and addresses of people the employee had corresponded with leaked.

Disclosed

2020-09-18

Organizations involved

1

Leaked or at risk

Unknown

Downtime

Unknown

What happened

  1. An employee opened an attachment in suspicious mail posing as a business partner, and the PC was infected with Emotet. [1] [2]

  2. A customer reported mail posing as the employee. [1] [2]

  3. Public disclosure and warning. [1]

Impact

Some email addresses and sender names of the employee's correspondents leaked. The suspicious mail used staff or site names as the sender, but came from the attackers' addresses, with a ZIP file named after a date attached. [1] [2]

Timeline

  1. Started 2020-09-16
  2. Detected 2020-09-17
  3. Disclosed 2020-09-18
  4. 2 days

Attack or cause

Method
[Malware]
Impact
[Data leak]
Entry point
E-mail

Data exposed or at risk

[Name][E-mail address]

Organizations involved

Open in organization search

Sources

  1. [1][Official]エン・ジャパン株式会社社員または当社サイトを装った不審なメールに関するお詫びと注意喚起についてen Japan · 2020-09-18
  2. [2][News]社員パソコンが「Emotet」に感染、顧客先で不審メールを確認(エン・ジャパン)ScanNetSecurity · 2020-09-30 08:00