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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 17 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. With this installer, users are expecting to download the free Mozilla Firefox web browser but before that occurs they may be presented with additional offers, mostly potentially unwanted software or adware.
Publisher:
OUTBROWSE  (signed and verified)

MD5:
9449f1c7c78c28520f29366d8a6f4e2c

SHA-1:
6830410524923249504c6b3adf3423ee92971f6a

SHA-256:
8ceb3427c5e9e802dfe136a09b008f88791159e09e924b9f67849e1304037a0b

Scanner detections:
17 / 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:
5/9/2024 9:17:38 AM UTC  (today)

Scan engine
Detection
Engine version

Agnitum Outpost
PUA.OutBrowse
7.1.1

AhnLab V3 Security
PUP/Win32.OutBrowse
2014.12.16

Avira AntiVirus
APPL/OutBrowse.lwasp
7.11.195.250

avast!
OutBrowse-G [PUP]
141214-1

AVG
Generic
2015.0.3259

Dr.Web
Adware.Downware.2081
9.0.1.05190

ESET NOD32
Win32/OutBrowse.P potentially unwanted application
7.0.302.0

G Data
Win32.Application.Outbrowse
14.12.24

K7 AntiVirus
Unwanted-Program
13.187.14339

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

Malwarebytes
PUP.Optional.OutBrowse
v2014.12.16.03

McAfee
Program.Adware-OutBrowse
16.8.708.2

NANO AntiVirus
Trojan.Win32.Generic.cthmwf
0.28.6.64267

nProtect
Trojan-Clicker/W32.OutBrowse.991968
14.12.15.01

Reason Heuristics
PUP.OUTBROWSE.H
14.12.16.3

Sophos
PUA 'OutBrowse Revenyou'
5.08

VIPRE Antivirus
Threat.4150696
35418

File size:
968.7 KB (991,968 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):
24576:9utbtfFcicu9/AGdSHlXEYprdDJ5Qk7I/Oylc8Cnrz:I79Iu9/9dSHlXECrBJ5r7Ibl7or

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 2 URLs.

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=vukbed49lkgru2m6759vv6qu6k05hvineqvdpia2nftut6vi3bu1-92156b862d7c887092599d674b44aa02&d=ez-download.com&p=Firefox&pid=3

http://download.ez-download.com/download/.../vukbed49lkgru2m6759vv6qu6k05hvineqvdpia2nftut6vi3bu1

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