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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 20 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:
04e5a802eccb8fa4b432a5bc1562af90

SHA-1:
796557b6da89d3ded31128dd133f3ece05f2aebe

SHA-256:
815a60423b286a5101b409bf61a22fa3633ac769c5d8b80f9f902f9e56f8ec3f

Scanner detections:
20 / 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:
4/25/2024 3:04:55 AM UTC  (today)

Scan engine
Detection
Engine version

Agnitum Outpost
PUA.OutBrowse
7.1.1

AhnLab V3 Security
PUP/Win32.OutBrowse
15.03.13

Avira AntiVirus
APPL/OutBrowse.lwasp
7.11.217.16

avast!
OutBrowse-G [PUP]
150303-0

AVG
MalSign.Generic
2016.0.3171

Dr.Web
Adware.Downware.2081
9.0.1.072

ESET NOD32
Win32/OutBrowse
9.9658

Fortinet FortiGate
Riskware/OutBrowse
3/13/2015

F-Prot
W32/Outbrowse.B.gen
v6.4.7.1.166

G Data
Win32.Application.OutBrowse
15.3.25

herdProtect (fuzzy)
variant of setup.exe (Adware)
2015.6.20.2

K7 AntiVirus
Unwanted-Program
13.200.15259

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

Malwarebytes
PUP.Optional.OutBrowse
v2015.06.20.02

McAfee
Program.Adware-OutBrowse
16.8.708.2

NANO AntiVirus
Trojan.Win32.Generic.cthmwf
0.28.0.59048

nProtect
Trojan-Clicker/W32.OutBrowse.993840
15.03.13.01

Reason Heuristics
PUP.Bundler.Outbrowse
15.3.13.19

Sophos
PUA 'OutBrowse Revenyou'
5.11

VIPRE Antivirus
Threat.4150696
37788

File size:
970.5 KB (993,840 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 8:00:00 PM

Valid to:
4/7/2015 7:59:59 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 5:50:52 PM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
6.0

CTPH (ssdeep):
24576:Qs/5K0vqxgYznk68rlyJQy0jjSQfEKLKrEewtkPbgwVDTZmxAT7:z5rvyk68Eay0/SQff2rEewtkPbVVvZi0

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:
7.9271

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://download.ez-download.com/download/.../jiimh4tqh0b0v7ph9o4rvspgf01rrkiud6ueoblb1mpf8ff1hnc1

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