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firefox.exe

JuSt AcCept

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 JuSt AcCept has been detected as adware by 1 anti-malware scanner with very strong indications that the file is a potential threat. The program is a setup application that uses the OutBrowse Revenyou installer. 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:
BPYXE  (signed by JuSt AcCept)

Product:
BPYXE

Version:
345.1569.911.2199

MD5:
7400a19ec5693b6f2d582ed73ef5b382

SHA-1:
54d5ea8505e9434a1dcb3db4d8b190dbcb4cb8a4

SHA-256:
224cc6d489ac68f7add41a4512c8d31107eb904c776db1df6c5319903e3e7317

Scanner detections:
1 / 68

Status:
Adware

Note:
Our current pool of anti-malware engines have not currently detected this file, however based on our own detection heuristics we feel that this file is unwanted.

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:
12/25/2024 6:10:31 PM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Outbrowse.JuStAcCept.Bundler (M)
16.2.21.8

File size:
774.1 KB (792,696 bytes)

Product version:
345.1569.911.2199

Copyright:
BPYXE

Trademarks:
BPYXE

File type:
Executable application (Win32 EXE)

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

Language:
Language Neutral

Common path:
C:\users\{user}\appdata\local\microsoft\windows\inetcache\ie\{random}\firefox.exe

Digital Signature
Signed by:
JuSt AcCept

Authority:
thawte, Inc.

Valid from:
6/7/2015 8:00:00 PM

Valid to:
12/17/2015 6:59:59 PM

Subject:
CN=JuSt AcCept, O=JuSt AcCept, L=Dublin, S=Dublin, C=IE

Issuer:
CN=thawte SHA256 Code Signing CA, O="thawte, Inc.", C=US

Serial number:
690566C3E14CFCD8C75439F8FBCA2635

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

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
6.0

CTPH (ssdeep):
24576:ngQ9Z8NJAX6wdD48Oa/bgpr8oHH+Dt4s86x:FuJAXfdU8OaDloHH8SS

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, 1C, 45, 00, E8, F1, 2B, 00, 00, A3, 64, 1B, 45, 00, 53, 8D, 44, 24, 34, 68, 60, 01, 00, 00, 50, 53, 68, 98, 37, 43, 00, FF, 15, 58, 71, 40, 00, 68, 54, 91, 40, 00, 68, 60, DB, 44, 00, E8, A4, 28, 00, 00, FF, 15, AC, 70, 40, 00, BF, 00, A0, 47, 00, 50, 57, E8, 92, 28, 00, 00...
 
[+]

Entropy:
7.9652

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://get.down1227group.info/1433830517/1433830517/get27?p=1955&d=18257&l=5187&n=1&exeurl=https://download-installer.cdn.mozilla.net/pub/firefox/releases/33.0/win32/en-US/Firefox Setup Stub 33.0.exe&productname=Firefox&d1=156909&d2=459&filename=Firefox&tyurl=http://www.postdownload.net/.../redirect.php?id=mg3m05618vjtda2c6c09r4nsq1rsia1le6bcsa6agkas1aanofs0-5d462cd67f5b86505a8973316c64d8a8&d=downloadzone.org&p=Firefox&pid=3&bex=1&countryid=265&icon=14

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