setup.exe

solteratop

This is the installer and setup program from the solteratop 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 solteratop has been detected as adware by 15 anti-malware scanners. The program is a setup application that uses the NSIS (Nullsoft Scriptable Install System) installer. It will plug into the web browser and display context-based advertisements by overwriting existing ads or by inserting new ones on various web pages.
Publisher:
solteratop  (signed and verified)

MD5:
714f4fd56ec1b9e1797ea3365d261392

SHA-1:
6ec435632c88dcc6aca4292e0182f998365f331a

SHA-256:
fd9b960a41b6608f47514745afc3586901471473013a44d7fa765e796fa94a74

Scanner detections:
15 / 68

Status:
Adware

Explanation:
Injects advertising in the web browser in various formats.

Analysis date:
4/25/2024 8:47:38 AM UTC  (today)

Scan engine
Detection
Engine version

Agnitum Outpost
PUA.Agent
7.1.1

Comodo Security
Application.Win32.Altbrowse.AK
18035

Dr.Web
Trojan.BPlug.35
9.0.1.094

ESET NOD32
Win32/BrowseFox (variant)
8.9626

Fortinet FortiGate
Adware/Agent
4/4/2014

Kaspersky
not-a-virus:AdWare.Win32.Agent
14.0.0.4070

Malwarebytes
PUP.Optional.Solteratop.A
v2014.04.04.12

McAfee
Artemis!714F4FD56EC1
5600.7171

NANO AntiVirus
Riskware.Win32.Agent.cqycvd
0.28.0.58873

Reason Heuristics
PUP.Installer.solteratop.F
14.4.4.0

Rising Antivirus
NS:PUF.SilenceInstaller!1.9DDF
23.00.65.14402

Sophos
Generic PUA HF
4.98

SUPERAntiSpyware
Adware.BrowseFox/Variant
10687

Trend Micro House Call
TROJ_GEN.F47V0327
7.2.94

VIPRE Antivirus
Yontoo
27946

File size:
2.8 MB (2,914,600 bytes)

File type:
Executable application (Win32 EXE)

Installer:
NSIS (Nullsoft Scriptable Install System)

Common path:
C:\users\{user}\appdata\local\microsoft\windows\temporary internet files\content.ie5\{random}\setup.exe

Digital Signature
Signed by:

Authority:
VeriSign, Inc.

Valid from:
11/26/2013 5:00:00 PM

Valid to:
11/27/2014 4:59:59 PM

Subject:
CN=solteratop, OU=Digital ID Class 3 - Microsoft Software Validation v2, O=solteratop, 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:
41CB4B95910E14FE125A0333405B7D34

File PE Metadata
Compilation timestamp:
12/5/2009 3:52:01 PM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
6.0

CTPH (ssdeep):
49152:QIWF8eiF5AdRiOnoeAcz0gvdW8iJhbndFLvrUNGGn8ltjIznBWWl84:QIWueQ5WR/noe3z0WdW8iJBdFLvrUN8K

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...
 
[+]

Entropy:
7.9986

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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