home

setup.exe

Scan Tack

This is the installer and setup program from the Scan Tack 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 Scan Tack has been detected as adware by 16 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:
Scan Tack  (signed and verified)

MD5:
3f2bfc93937e22e5c199b4cec2a19632

SHA-1:
690b013265df083edb238df1adf267376ae62f25

Scanner detections:
16 / 68

Status:
Adware

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

Analysis date:
4/26/2024 12:09:01 PM UTC  (today)

Scan engine
Detection
Engine version

Avira AntiVirus
APPL/BrowseFox.Gen2
7.11.144.64

Baidu Antivirus
Adware.Win32.Agent
4.0.3.14419

Comodo Security
Application.Win32.Altbrowse.AK
18128

Dr.Web
Trojan.BPlug.35
9.0.1.0109

ESET NOD32
Win32/BrowseFox (variant)
8.9698

Fortinet FortiGate
Riskware/BrowseFox
4/19/2014

G Data
Win32.Application.BrowseFox
14.4.24

Kaspersky
not-a-virus:AdWare.Win32.Agent
14.0.0.3995

Malwarebytes
PUP.Optional.ScanTack.A
v2014.04.19.01

McAfee
Artemis!304EA9CA9396
5600.7156

NANO AntiVirus
Riskware.Win32.Agent.cuenda
0.28.0.59288

Reason Heuristics
PUP.Installer.ScanTack.F
14.4.19.1

Rising Antivirus
NS:PUF.SilenceInstaller!1.9DDF
23.00.65.14417

SUPERAntiSpyware
Adware.BrowseFox/Variant
10657

Trend Micro House Call
TROJ_GE.5CA189EB
7.2.109

VIPRE Antivirus
Yontoo
28384

File size:
2 MB (2,056,312 bytes)

File type:
Executable application (Win32 EXE)

Installer:
NSIS (Nullsoft Scriptable Install System)

Common path:
C:\Documents and Settings\{user}\Local settings\temporary internet files\content.ie5\{random}\setup.exe

Digital Signature
Signed by:
Scan Tack

Authority:
VeriSign, Inc.

Valid from:
1/21/2014 4:00:00 PM

Valid to:
1/22/2015 3:59:59 PM

Subject:
CN=Scan Tack, OU=Digital ID Class 3 - Microsoft Software Validation v2, O=Scan Tack, 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:
44D91A3142283CE62B23F23C84838B0D

File PE Metadata
Compilation timestamp:
12/5/2009 2:52:01 PM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
6.0

CTPH (ssdeep):
49152:HSF8GqXZbmg2z0gwRZN0dyTFzZeELmGyqvqc9GCLERl8:yuG+Nez0NPNYyTVYmuqvqc9xaO

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:
7.9973

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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