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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 15 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:
e9e9ba34feab287c5b23a2eac11e0d8a

SHA-1:
b0d85edf582218ebb796fb32312373d5e6de1544

SHA-256:
1a08734498df722f22c5a9720563c2ccb2ab5dfe6dc95a387f8f066244d63d32

Scanner detections:
15 / 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:
12/25/2024 4:57:29 PM UTC  (today)

Scan engine
Detection
Engine version

Agnitum Outpost
PUA.OutBrowse
7.1.1

AVG
MalSign.OutBrowse
2015.0.3592

Dr.Web
Adware.Downware.1664
9.0.1.017

ESET NOD32
Win32/OutBrowse (variant)
8.9155

herdProtect (fuzzy)
variant of keyloggerpro_setup.exe (Adware)
2014.1.27.6

IKARUS anti.virus
not-a-virus:Downloader.NSIS
t3scan.2.2.29

K7 AntiVirus
Unwanted-Program
13.174.10469

Kaspersky
not-a-virus:Downloader.NSIS.OutBrowse
14.0.0.4453

McAfee
Artemis!B0FC9AF5F744
5600.7248

NANO AntiVirus
Trojan.Win32.OutBrowse.csrlxi
0.28.0.57630

Reason Heuristics
PUP.OutBrowse.H
14.8.7.20

Sophos
Generic PUA AL
4.95

Trend Micro House Call
TROJ_GEN.F47V1130
7.2.17

Vba32 AntiVirus
Downloader.OutBrowse
3.12.24.3

VIPRE Antivirus
OutBrowse
24214

File size:
622.3 KB (637,232 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:
VeriSign, Inc.

Valid from:
10/24/2013 2:00:00 AM

Valid to:
10/25/2014 1:59:59 AM

Subject:
CN=OutBrowse, OU=Digital ID Class 3 - Microsoft Software Validation v2, O=OutBrowse, L=Ramat Gan, S=Ramat Gan, 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:
56A6FE571611B68C9224798AD62913CA

File PE Metadata
Compilation timestamp:
12/5/2009 11:50:52 PM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
6.0

CTPH (ssdeep):
12288:PR/ZrqyOmXPj2+jxmY0lKX/b5qQwGDJ+QBrh/jRhucDprJdchIfG:PR/NqlmXrlBjs5AJxj3DCht

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...
 
[+]

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 9 URLs.

http://downloader.ez-download.com/download.php?id=23a0a912fd4ad218814beb3f5bd715001d751573&z=8&p=eyJweSI6ImV6IiwicnMiOiJnb29nbGUiLCJydCI6InNlYXJjaCIsImMiOiJiciIsIm8iOiJ3aW43IiwiYiI6ImNoMzEiLCJ1X2lkIjoiZXpfNTJhNzU2ZDFmMjkwZDcuNTM1ODQ0MzQiLCJwYV9pZCI6IjgiLCJzdF9pZCI6IjAiLCJzcF9pZCI6IjAwMDAtMDAwMCIsInRzIjoxMzg2Njk4NDUwLCJrdyI6ImRvd25sb2FkIG1vemlsbGEiLCJjdSI6ImRvd25sb2FkIG1vemlsbGEiLCJjYSI6bnVsbH0=

http://downloader.ez-download.com/download.php?id=23a0a912fd4ad218814beb3f5bd715001d751573&z=8&p=eyJweSI6ImV6IiwicnMiOiJnb29nbGUiLCJydCI6InNlYXJjaCIsImMiOiJiciIsIm8iOiJ3aW43IiwiYiI6ImNoMzIiLCJ1X2lkIjoiZXpfNTJhNWZmOTRkNDRhZjYuNjk0MTUxOTMiLCJwYV9pZCI6IjgiLCJzdF9pZCI6IjAiLCJzcF9pZCI6IjAwMDAtMDAwMCIsInRzIjoxMzg2NjEwNTgwLCJrdyI6Im1vemlsYSBkb3dubG9hZHMiLCJjdSI6Im1vemlsYSBkb3dubG9hZHMiLCJjYSI6bnVsbH0=

http://downloader.ez-download.com/download.php?id=23a0a912fd4ad218814beb3f5bd715001d751573&z=8&p=eyJweSI6ImV6IiwicnMiOiJnb29nbGUiLCJydCI6InNlYXJjaCIsImMiOiJiciIsIm8iOiJ3aW43IiwiYiI6ImNoMzEiLCJ1X2lkIjoiZXpfNTJhMzc1MWQ4ODIwMjEuNTc2ODAwMTciLCJwYV9pZCI6IjgiLCJzdF9pZCI6IjAiLCJzcF9pZCI6IjAwMDAtMDAwMCIsInRzIjoxMzg2NDQ0MDYxLCJrdyI6Im1vemlsYSIsImN1IjoibW96aWxhIiwiY2EiOm51bGx9

http://downloader.ez-download.com/download.php?id=23a0a912fd4ad218814beb3f5bd715001d751573&z=8&p=eyJweSI6ImV6IiwicnMiOiJnb29nbGUiLCJydCI6InNlYXJjaCIsImMiOiJiciIsIm8iOiJ3aW43IiwiYiI6ImNoMzEiLCJ1X2lkIjoiZXpfNTI5YjZlYjc0NTViNjIuNTEzNjc1MTciLCJwYV9pZCI6IjgiLCJzdF9pZCI6IjAiLCJzcF9pZCI6IjAwMDAtMDAwMCIsInRzIjoxMzg1OTE4MTM1LCJrdyI6Im1vemlsbGEiLCJjdSI6Im1vemlsbGEiLCJjYSI6bnVsbH0=

http://cdn.app2desktop.com/misc/adlogica/.../Firefox.exe

http://default-page.com/downloader/.../?d1=12&d2=1&d3=3&d4=12&d5=00000000

http://default-page.com/.../firefox?d1=12&d2=1&d3=3&d4=12&d5=00000000

http://downloader.ez-download.com/download.php?id=23a0a912fd4ad218814beb3f5bd715001d751573&z=8&p=eyJweSI6ImV6IiwicnMiOiJnb29nbGUiLCJydCI6InNlYXJjaCIsImMiOiJmciIsIm8iOiJ3aW44IiwiYiI6ImNoMzEiLCJ1X2lkIjoiZXpfNTJhNGRiMGUwZDZjMTguMzY2NTYwODAiLCJwYV9pZCI6IjgiLCJzdF9pZCI6IjAiLCJzcF9pZCI6IjAwMDAtMDAwMCIsInRzIjoxMzg2NTM1Njk0LCJrdyI6Im1vemlsbGEiLCJjdSI6Im1vemlsbGEiLCJjYSI6bnVsbH0=

http://downloader.ez-download.com/download.php?id=23a0a912fd4ad218814beb3f5bd715001d751573&z=8&p=eyJweSI6ImV6IiwicnMiOiJnb29nbGUiLCJydCI6InNlYXJjaCIsImMiOiJkZSIsIm8iOiJ3aW43IiwiYiI6ImNoMzEiLCJ1X2lkIjoiZXpfNTI5Nzg1MDAyNzE3ZDYuOTk3MjMxNDUiLCJwYV9pZCI6IjgiLCJzdF9pZCI6IjAiLCJzcF9pZCI6IjAwMDAtMDAwMCIsInRzIjoxMzg1NjYxNjk2LCJrdyI6ImZpcmVmb3giLCJjdSI6ImZpcmVmb3giLCJjYSI6bnVsbH0=

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