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firefox-update.exe

Blueis

This is the Tightrope WebInstall which bundles applications with offers for additional 3rd party software, mostly unwanted adware, and may be installed with minimal consent. The application firefox-update.exe by Blueis 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 Tightrope WebInstall 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:
Blueis  (signed and verified)

MD5:
e0da52836d5e94891c4c44d350a65bd9

SHA-1:
51273307716b9dd31088b6c7cc946a4b0676d5e3

SHA-256:
ac37c46a8a9f02d2f992c1d6f19fe2fe749d33b4c574fc6ce8be1a527de25c68

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:
11/16/2024 1:36:29 PM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Tightrope.Blueis.Bundler (M)
16.2.23.0

File size:
823.4 KB (843,128 bytes)

File type:
Executable application (Win32 EXE)

Bundler/Installer:
Tightrope WebInstall (using Nullsoft Install System)

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

Digital Signature
Signed by:
Blueis

Authority:
VeriSign, Inc.

Valid from:
11/7/2014 2:00:00 AM

Valid to:
11/8/2015 1:59:59 AM

Subject:
CN=Blueis, O=Blueis, L=SAN FRANCISCO, S=California, C=US

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:
58AC2B1B2E1E80F003ECEE0F41F4124A

File PE Metadata
Compilation timestamp:
7/15/2014 7:29:31 PM

OS version:
5.1

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
10.0

CTPH (ssdeep):
12288:zxpJfslZtuaVd9lpmhwQbift489IVGD4xJFl6Xqb5Kbmkg8SU7:Np9sVuaVdvgVbmgGDijyikg5m

Entry address:
0x3345

Entry point:
81, EC, 80, 01, 00, 00, 53, 55, 56, 33, DB, 57, 89, 5C, 24, 18, C7, 44, 24, 10, B0, 73, 40, 00, 33, F6, C6, 44, 24, 14, 20, FF, 15, 30, 70, 40, 00, 68, 01, 80, 00, 00, FF, 15, C0, 70, 40, 00, 53, FF, 15, 88, 72, 40, 00, 6A, 08, A3, B8, 3C, 42, 00, E8, 2E, 25, 00, 00, 53, 68, 60, 01, 00, 00, A3, C0, 3B, 42, 00, 8D, 44, 24, 38, 50, 53, 68, 43, 74, 40, 00, FF, 15, 64, 71, 40, 00, 68, 38, 74, 40, 00, 68, C0, 33, 42, 00, E8, 1F, 24, 00, 00, FF, 15, BC, 70, 40, 00, 50, BF, 00, 90, 42, 00, 57, E8, 0D, 24, 00, 00...
 
[+]

Entropy:
7.4910

Packer / compiler:
Nullsoft install system v2.x

Code size:
23 KB (23,552 bytes)

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

http://files4.fastdownload3.com/download/.../dl?bc=1086440&pid=topvideosoft&brand=topvideosoft.com&s=new_source1&c=topdmsg&country=RO&cb=1016709530&filename=firefox-update.exe&productKey=uzxlh25ouoiupflchwd5pdzafjsoog5l&osName=Windows&osVersion=8&browserName=IE&browserVersion=7&zTmp=1

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