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yahootoolbar.exe

YahooToolbar

OutBrowse Ltd

This is the OutBrowse Revenyou installer which bundles offers for additional third party applications that may be unwanted and installed without consent. The application yahootoolbar.exe by OutBrowse has been detected as adware by 2 anti-malware scanners. The program is a setup application that uses the OutBrowse Revenyou installer. The setup routine uses the RevenYou.Com Pay Per Install platform (OutBrowse) which bundles additional software offers inclduing toolbars, extensions, PC utilities as well as other PUPs.
Publisher:
yahoo.com  (signed by OutBrowse Ltd)

Product:
YahooToolbar

Description:
Yahoo Toolbar

Version:
1.0

MD5:
e0a38472ea4762abe33c25a2a798b1fd

SHA-1:
c572e4912891012adcdfe373c489aaad8838ea4a

SHA-256:
a086e3334ac6a1e45e7e716990ae60c63b0a06361d7aa07e5d76683c3e13874c

Scanner detections:
2 / 68

Status:
Adware

Explanation:
Bundles additional adware offers during download and installation using the OutBrowse installer.

Description:
This is also known as bundleware, or downloadware, which is an downloader designed to simply deliver ad-supported offers in the setup routine of an otherwise legitimate software.

Analysis date:
4/26/2024 9:31:40 AM UTC  (today)

Scan engine
Detection
Engine version

ESET NOD32
Win32/OutBrowse
9.8977

Reason Heuristics
PUP.Bundler.Outbrowse
15.3.15.12

File size:
565.4 KB (578,960 bytes)

Copyright:
© Yahoo

Trademarks:
yahoo.com

File type:
Executable application (Win32 EXE)

Bundler/Installer:
OutBrowse Revenyou (using Nullsoft Install System)

Language:
English (United States)

Common path:
C:\users\{user}\appdata\local\temp\yahootoolbar.exe

Digital Signature
Signed by:
OutBrowse Ltd

Authority:
VeriSign, Inc.

Valid from:
1/10/2012 7:00:00 PM

Valid to:
1/10/2013 6:59:59 PM

Subject:
CN=OutBrowse Ltd, OU=Digital ID Class 3 - Microsoft Software Validation v2, O=OutBrowse Ltd, L=Ramat Gan, S=Merkaz, C=IL

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:
51AC0634BE5BEE7A290676D4A583D04A

File PE Metadata
Compilation timestamp:
12/5/2009 5:50:52 PM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
6.0

CTPH (ssdeep):
12288:O8E6sbpWsZEqaBcm9jSVb5BxNURQiGR7G:O8dUpWg2jCxNURQiGR7G

Entry address:
0x30FA

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, 18, EC, 42, 00, E8, F1, 2B, 00, 00, A3, 64, EB, 42, 00, 53, 8D, 44, 24, 34, 68, 60, 01, 00, 00, 50, 53, 68, 98, 8F, 42, 00, FF, 15, 58, 71, 40, 00, 68, 54, 91, 40, 00, 68, 60, E3, 42, 00, E8, A4, 28, 00, 00, FF, 15, AC, 70, 40, 00, BF, 00, 40, 43, 00, 50, 57, E8, 92, 28, 00, 00...
 
[+]

Entropy:
7.9133

Packer / compiler:
Nullsoft install system v2.x

Code size:
23.5 KB (24,064 bytes)

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