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 17 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:
af58840590f16e1dc1e9dffaba8f6de3

SHA-1:
c196031a97fd0b14f95282012e81ac04d26b97b3

SHA-256:
f197e0a51c51507b177356fffc2bca22a94f7c09893bdebe0c733ba33487d4f1

Scanner detections:
17 / 68

Status:
Adware

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

Analysis date:
4/18/2024 2:54:50 PM UTC  (today)

Scan engine
Detection
Engine version

Avira AntiVirus
APPL/BrowseFox.Gen2
7.11.144.202

AVG
MalSign.Generic
2015.0.3496

Baidu Antivirus
Adware.Win32.Agent
4.0.3.14423

Comodo Security
Application.Win32.Altbrowse.AK
18152

Dr.Web
Trojan.BPlug.28
9.0.1.0113

ESET NOD32
Win32/BrowseFox (variant)
8.9709

G Data
Win32.Application.BrowseFox
14.4.24

Kaspersky
not-a-virus:AdWare.Win32.Agent
14.0.0.3974

Malwarebytes
PUP.Optional.ScanTack.A
v2014.04.23.06

McAfee
Artemis!B5CB7232990C
5600.7152

NANO AntiVirus
Riskware.Win32.Agent.cuenda
0.28.0.59492

Reason Heuristics
PUP.Installer.ScanTack.F
14.4.23.6

Rising Antivirus
NS:PUF.SilenceInstaller!1.9DDF
23.00.65.14421

Sophos
Generic PUA PP
4.98

SUPERAntiSpyware
Adware.BrowseFox/Variant
10648

Trend Micro House Call
TROJ_GE.97593336
7.2.113

VIPRE Antivirus
Yontoo
28526

File size:
2 MB (2,092,576 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:
Scan Tack

Authority:
VeriSign, Inc.

Valid from:
1/22/2014 1:00:00 AM

Valid to:
1/23/2015 12:59:59 AM

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 11:52:01 PM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
6.0

CTPH (ssdeep):
49152:5/sF8Gqvzq6uBLrIRKz0gfC1BqDBbLqRe6vNCek5mJ8u9sl8:lsuGMYNrkKz0P1BYhyll1t9sO

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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