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firefox.exe

OUTBROWSE

This is the OutBrowse Revenyou installer which bundles offers for additional third party applications that may be unwanted and installed without consent. The application firefox.exe by OUTBROWSE has been detected as adware by 16 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. The installer is marketed through download protals and search ads as the free Mozilla Firefox web browser but will also install additional software offers which include adware, PUPs and browser toolbars.
Publisher:
OUTBROWSE  (signed and verified)

MD5:
8ac6961771bcb34e43c9d8666b6b15be

SHA-1:
f74cb11d704d157da86ebf3be64fb575dffff8be

SHA-256:
24b726d17836918efc30a7e2e17933911a84b35ef1159a9a82971318c5d9d9f4

Scanner detections:
16 / 68

Status:
Adware

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

Description:
This 'download manager' is also considered bundleware, a utility designed to download software (possibly legitimate or opensource) and bundle it with a number of optional offers including ad-supported utilities, toolbars, shopping comparison tools and browser extensions.

Analysis date:
4/19/2024 8:16:50 PM UTC  (today)

Scan engine
Detection
Engine version

Agnitum Outpost
PUA.OutBrowse
7.1.1

Avira AntiVirus
APPL/OutBrowse.lwasp
7.11.189.146

AVG
Generic
2015.0.3275

Dr.Web
Adware.Downware.2081
9.0.1.05190

ESET NOD32
Win32/OutBrowse.Q potentially unwanted application
7.0.302.0

Fortinet FortiGate
Riskware/OutBrowse
11/29/2014

G Data
Win32.Application.Outbrowse
14.11.24

K7 AntiVirus
Unwanted-Program
13.186.14174

Kaspersky
not-a-virus:AdWare.Win32.OutBrowse
15.0.0.543

Malwarebytes
PUP.Optional.OutBrowse
v2014.11.29.04

McAfee
Adware-OutBrowse
5600.6931

NANO AntiVirus
Trojan.Win32.Generic.cthmwf
0.28.6.63726

nProtect
Trojan-Clicker/W32.OutBrowse.991992
14.11.28.01

Reason Heuristics
PUP.OUTBROWSE.H
14.11.29.15

Sophos
OutBrowse Revenyou
4.98

VIPRE Antivirus
Threat.4150696
35224

File size:
968.7 KB (991,992 bytes)

File type:
Executable application (Win32 EXE)

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

Language:
Language Neutral

Common path:
C:\users\{user}\downloads\firefox.exe

Digital Signature
Signed by:
OUTBROWSE

Authority:
COMODO CA Limited

Valid from:
4/6/2014 5:00:00 PM

Valid to:
4/7/2015 4:59:59 PM

Subject:
CN=OUTBROWSE, O=OUTBROWSE, STREET=Bialik Number: 143, L=Ramat Gan, S=Israel, PostalCode=5252337, C=IL

Issuer:
CN=COMODO Code Signing CA 2, O=COMODO CA Limited, L=Salford, S=Greater Manchester, C=GB

Serial number:
00A5F03C3A375C11FD6C1C160EE8BFF923

File PE Metadata
Compilation timestamp:
12/5/2009 2:50:52 PM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
6.0

CTPH (ssdeep):
24576:IktbtfFcicu9/AGdSHlXEYprdDJ5Qk7I/Oylc8Cnr1G:d79Iu9/9dSHlXECrBJ5r7Ibl7or4

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:
7.9253

Packer / compiler:
Nullsoft install system v2.x

Code size:
23.5 KB (24,064 bytes)

The file firefox.exe has been seen being distributed by the following URL.

http://dl.ez-downlaod.com/DownloadManager/Get?p=1955&d=3208&l=5187&n=1&productname=Firefox&d1=4754&filename=Firefox&tyurl=http://www.postdownload.net/.../redirect.php?id=ejg1g5h3um8klkjca8rf63tituei11qn119finmn6mtm5undcv71-6e448410019b971afa803ab0b3b1b2e7&d=ez-download.com&p=Firefox&pid=3

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