Analysis by: Wilbert Vidal

ALIASES:

Trojan.Emotet (Symantec); Emotet-FEA!166A3BA8EE51 (McAfee); W32.Trojan.Emotet(Webroot)

 PLATFORM:

Windows

 OVERALL RISK RATING:
 DAMAGE POTENTIAL:
 DISTRIBUTION POTENTIAL:
 REPORTED INFECTION:
 INFORMATION EXPOSURE:

  • Threat Type: Spyware

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW

This Spyware arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

It deletes itself after execution.

  TECHNICAL DETAILS

Tamaño del archivo 126,976 bytes
Tipo de archivo EXE
Fecha de recepción de las muestras iniciales 07 Dec 2017

Arrival Details

This Spyware arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

Installation

This Spyware drops and executes the following files:

  • %System%\{random alphanumeric characters}.exe
  • %System%\{filename 1}{filename 2}.exe

(Note: %System% is the Windows system folder, where it usually is C:\Windows\System32 on all Windows operating system versions.)

Autostart Technique

This Spyware registers itself as a system service to ensure its automatic execution at every system startup by adding the following registry entries:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
services\{filename 1}{filename 2}
ImagePath = %System%\{filename 1}{filename 2}.exe

Other Details

This Spyware connects to the following possibly malicious URL:

  • http://{BLOCKED}3.{BLOCKED}5.217.114:443/
  • http://{BLOCKED}6.{BLOCKED}0.105.121:8080/
  • http://{BLOCKED}8.{BLOCKED}1.155.6:8080/
  • http://{BLOCKED}0.{BLOCKED}1.139.203:8080/
  • http://{BLOCKED}9.{BLOCKED}8.17.49:443/
  • http://{BLOCKED}7.{BLOCKED}0.177.153:8080/
  • http://{BLOCKED}4.{BLOCKED}8.246.9/
  • http://{BLOCKED}.{BLOCKED}6.161.148/
  • http://{BLOCKED}6.{BLOCKED}7.57.9/
  • http://{BLOCKED}9.{BLOCKED}4.149.195:8080/
  • http://{BLOCKED}5.{BLOCKED}5.76.121:8080/
  • http://{BLOCKED}6.{BLOCKED}4.171.191:8080/
  • http://{BLOCKED}1.{BLOCKED}4.217.195:8080/
  • http://{BLOCKED}4.{BLOCKED}.205.55:7080/
  • http://{BLOCKED}6.{BLOCKED}8.11.99:8080/

It deletes itself after execution.