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setup.exe

Discovery App

This is the installer and setup program from the Discovery App branded Yontoo adware web browser extension. This adware injects various forms of advertisements in the user's web browser based on the HTML content and URLs viewed. Ad include banners, in-line context text links, coupons, and search. The program will install an auto-updating background service that will update the software with additional features. The application setup.exe by Discovery App 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.
Publisher:
Discovery App  (signed and verified)

Version:
2.0.5749.24679

MD5:
a76463c0dcad306a5c4f69292b08a7c4

SHA-1:
3f11146c1d33611ff77d9b1cce909aeaff034d78

SHA-256:
69ec827cc665cc70128a1e82af1326103327811dd58466a14dd3cf45e424769e

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:
4/24/2024 12:18:02 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Yontoo.DiscoveryApp.Installer (M)
16.2.15.20

File size:
610.4 KB (625,088 bytes)

Product version:
2015.09.28

File type:
Executable application (Win32 EXE)

Installer:
NSIS (Nullsoft Scriptable Install System)

Language:
English (United States)

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

Digital Signature
Signed by:
Discovery App

Authority:
VeriSign, Inc.

Valid from:
3/24/2015 8:00:00 PM

Valid to:
3/24/2016 7:59:59 PM

Subject:
CN=Discovery App, O=Discovery App, L=San Diego, 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:
510E3F5ACE52C22C76DC87DB7D1FCCE8

File PE Metadata
Compilation timestamp:
6/4/2014 7:58:31 PM

OS version:
5.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
9.0

CTPH (ssdeep):
12288:ddAtAmnM3D0Fw/tN8dkmLtpHHHrh7LoxGTKuTCiMNL4ks5g8itYDNyb:ddAtSz0FmcLbH1zdhgqNyb

Entry address:
0x31E4

Entry point:
81, EC, 80, 01, 00, 00, 53, 55, 56, 33, DB, 57, 89, 5C, 24, 18, C7, 44, 24, 10, E0, 73, 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, B8, 6C, 44, 00, E8, 1B, 25, 00, 00, 53, 68, 60, 01, 00, 00, A3, C0, 6B, 44, 00, 8D, 44, 24, 38, 50, 53, 68, DB, 73, 40, 00, FF, 15, 58, 71, 40, 00, 68, D0, 73, 40, 00, 68, C0, 2B, 44, 00, E8, 0D, 24, 00, 00, FF, 15, AC, 70, 40, 00, 50, BF, 00, F0, 46, 00, 57, E8, FB, 23, 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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