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gooternet_setup.exe

gooternet

This is the installer/setup program for a Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The application gooternet_setup.exe by gooternet has been detected as adware by 1 anti-malware scanner with very strong indications that the file is a potential threat. The program is a setup application that uses the NSIS (Nullsoft Scriptable Install System) installer. It is also typically executed from the user's temporary directory. While running, it connects to the Internet address api.yontoo.com on port 80 using the HTTP protocol.
Publisher:
gooternet  (signed and verified)

MD5:
334e42e4924e18e8a0df19c66690511f

SHA-1:
52498b4d41e3029c45f5387954c9f5c59004f864

SHA-256:
eea832023cfda20be4d25a1ec7bf21a14493619d902bd027a2f1f408d14a90ca

Scanner detections:
1 / 68

Status:
Adware

Explanation:
Belongs to the Sambreel/Yontoo progam that inserts various forms of advertising in the user's web browser, installed with minimal or no user consent.

Analysis date:
5/10/2024 7:29:32 PM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Yontoo.gooternet.Installer (M)
16.2.14.6

File size:
2 MB (2,147,728 bytes)

File type:
Executable application (Win32 EXE)

Installer:
NSIS (Nullsoft Scriptable Install System)

Common path:
C:\users\{user}\appdata\local\temp\{random}.tmp\gooternet_setup.exe

Digital Signature
Signed by:
gooternet

Authority:
VeriSign, Inc.

Valid from:
3/18/2014 9:00:00 PM

Valid to:
3/19/2015 8:59:59 PM

Subject:
CN=gooternet, OU=Digital ID Class 3 - Microsoft Software Validation v2, O=gooternet, L=Santa Monica, S=California, C=US

Issuer:
CN=VeriSign Class 3 Code Signing 2010 CA, OU=Terms of use at https://www.verisign.com/rpa (c)10, OU=VeriSign Trust Network, O="VeriSign, Inc.", C=US

Serial number:
6833AE314355006DDCB1CFFFFA2C185E

File PE Metadata
Compilation timestamp:
12/5/2009 8:52:01 PM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
6.0

CTPH (ssdeep):
49152:GTnJ8m3pz0gZAoO6W7YBpDhIIjjQfNco0NDbbWXvbHt229s58q:Inim3pz0Jn6E6pDtjQfN0+TM299q

Entry address:
0x30CB

Entry point:
81, EC, 80, 01, 00, 00, 53, 55, 56, 33, DB, 57, 89, 5C, 24, 18, C7, 44, 24, 10, 60, 91, 40, 00, 33, F6, C6, 44, 24, 14, 20, FF, 15, 30, 70, 40, 00, 68, 01, 80, 00, 00, FF, 15, B0, 70, 40, 00, 53, FF, 15, 7C, 72, 40, 00, 6A, 08, A3, 38, 6F, 44, 00, E8, F1, 2B, 00, 00, A3, 84, 6E, 44, 00, 53, 8D, 44, 24, 34, 68, 60, 01, 00, 00, 50, 53, 68, 30, 9C, 42, 00, FF, 15, 58, 71, 40, 00, 68, 54, 91, 40, 00, 68, 80, 2E, 44, 00, E8, A4, 28, 00, 00, FF, 15, AC, 70, 40, 00, BF, 00, F0, 46, 00, 50, 57, E8, 92, 28, 00, 00...
 
[+]

Packer / compiler:
Nullsoft install system v2.x

Code size:
22.5 KB (23,040 bytes)

The executing file has been seen to make the following network communications in live environments.

TCP (HTTP):
Connects to wac.edgecastcdn.net  (72.21.81.13:80)

TCP (HTTP):
Connects to service.yontoo.com  (8.25.35.148:80)

TCP (HTTP):
Connects to api.yontoo.com  (8.25.35.15:80)

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