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

Kagafu Fumuroya: an office PC was infected with Emotet and part of its past mail history leaked

A spoofed message quoting the company's own mail led to the discovery that an office PC had Emotet. Part of the mail history stored on the PC leaked.

Disclosed

2020-07-28

Organizations involved

1

Leaked or at risk

Unknown

Downtime

Unknown

What happened

  1. The company received a spoofed message that quoted mail exchanged inside the company. Checks showed that an office PC was likely infected with Emotet. [1]

  2. Public disclosure; the company said it was checking every office PC. [1]

Impact

Part of the mail history stored on the infected PC leaked. The company asked people to check the sender address of any mail in its name and not to open attachments or links. [1]

Timeline

  1. Started, Detected 2020-07-21
  2. Disclosed 2020-07-28
  3. 7 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][News]「Emotetウイルス」感染、社内でやり取りしたメール内容を引用したなりすましメールを確認（加賀麩不室屋）ScanNetSecurity · 2020-08-03 08:00