EmoCheck

Emotet detection tool for Windows OS.

How to use

1. Download EmoCheck from the Releases page.
2. Run EmoCheck on the host.
3. Check the exported report.

Download

Please download from the Releases page.

Latest hash:

emocheck_x86.exe
MD5 : 89863A79D531E2730D450F2D1C99EB6C
SHA256: 5A459538DE0A5B1C270C0617191A71D23EA6C705650761EF9B7095A736AF7301

emocheck_x64.exe
MD5 : 94005A6447CA810619FF24D67EF67A93
SHA256: 65838C35D03FE36E9DBA1408E2278F8BC282B1319FEFAABEE4491B45E1254163

Command options

(since v0.0.2)

• Specify output directory for the report (default: current directory)
  • /output [your output directory] or -output [your output directory]
• No console output
  • /quiet or -quiet
• Export the report in JSON style
  • /json or -json
• Debug mode (no report)
  • /debug or -debug
• Show help
  • /help or -help

How EmoCheck detects Emotet

(v0.0.1)
Emotet generates their process name from a specific word dictionary and C drive serial number. EmoCheck scans the running process on the host, and find Emotet process from their process name.

(added in v0.0.2)
Emotet keeps their encoded process name in a specific registry key. EmoCheck looks up and decode the registry value, and find it from the process list.

Sample Report

Text stlye:

[Emocheck v0.0.2]
Scan time: 2020-02-10 13:06:20
____________________________________________________

[Result]
Detected Emotet process.

[Emotet Process]
     Process Name  : mstask.exe
     Process ID    : 716
     Image Path    : C:\Users\[username]\AppData\Local\mstask.exe
____________________________________________________

Please remove or isolate the suspicious execution file.

JSON style (added in v0.0.2):

{
  "scan_time":"2020-02-10 13:06:20",
  "hostname":"[your hostname]",
  "emocheck_version":"0.0.2",
  "is_infected":"yes",
  "emotet_processes":[
    {
       "process_name":"mstask.exe",
       "process_id":"716",
       "image_path":"C:\\Users\\[username]\\AppData\\Local\\mstask.exe"
    }
  ]
}

The report will be exported to the following path.

(v0.0.1)
[current directory]\yyyymmddhhmmss_emocheck.txt

(since v0.0.2)
[output path]\[computer name]_yyyymmddhhmmss_emocheck.txt
[output path]\[computer name]_yyyymmddhhmmss_emocheck.json

Screenshot

(v0.0.1)

Releases

• (Feb. 3, 2020) v0.0.1
  • Initial release
• (Feb. 10, 2020) v0.0.2
  • update detecting method
  • add options

Notes

Tested environments

• Windows 10 1809 64bit Japanese Edition
• Windows 8.1 64bit Japanese Edition
• Windows 7 SP1 32bit Japanese Edition
• Windows 7 SP1 64bit Japanese Edition

Build

• Windows 10 1809 64bit Japanese Edition
• Microsoft Visual Studio Community 2017