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firefox.exe

WorldSetup

The installer utilizes the installCore download manager which may bundle additional offers for various ad-supported toolbars, extensions and utilities. The application firefox.exe by WorldSetup has been detected as adware by 8 anti-malware scanners. The program is a setup application that uses the installCore installer. During install, it bundles potentially unwanted software on a user's computer at the same time without adequate consent. 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:
WorldSetup  (signed and verified)

MD5:
36d852912e76cae15dd684bef8f9f6c7

SHA-1:
fa34b6c5163ffca764a3f0d8439ade1887fa2281

SHA-256:
d59327b3355ecdb6fcaed7e42acc30b8836fd78ca8a6cbbaa35292137ee0576f

Scanner detections:
8 / 68

Status:
Adware

Explanation:
May bundle additional potentially unwanted software such as adware during setup.

Description:
This is an installer which may bundle legitimate applications with offers for additional 3rd-party applications that may be unwanted by the user. While the installer contains an 'opt-out' feature this is not set be defult and is usually overlooked.

Analysis date:
4/24/2024 8:14:08 PM UTC  (today)

Scan engine
Detection
Engine version

Dr.Web
Trojan.Packed.24524
9.0.1.0120

ESET NOD32
Win32/InstallCore.IO (variant)
8.9373

Malwarebytes
PUP.Optional.BundleInstaller.A
v2014.04.30.11

Norman
InstallCore.WCDD
11.20140430

Qihoo 360 Security
HEUR/Malware.QVM20.Gen
1.0.0.1015

Reason Heuristics
PUP.WorldSetup.H
14.4.30.11

Rising Antivirus
PE:Malware.XPACK-LNR/Heur!1.5594
23.00.65.14428

Vba32 AntiVirus
Downware.InstallCore
3.12.24.3

File size:
665.9 KB (681,912 bytes)

File type:
Executable application (Win32 EXE)

Bundler/Installer:
installCore (using Inno Setup)

Language:
Language Neutral

Common path:
C:\users\{user}\downloads\firefox.exe

Digital Signature
Signed by:
WorldSetup

Authority:
COMODO CA Limited

Valid from:
1/3/2014 2:00:00 AM

Valid to:
1/4/2015 1:59:59 AM

Subject:
CN=WorldSetup, O=WorldSetup, STREET=Lilienblum 28 St., L=Tel-Aviv, S=Tel-Aviv, PostalCode=6513307, C=IL

Issuer:
CN=COMODO Code Signing CA 2, O=COMODO CA Limited, L=Salford, S=Greater Manchester, C=GB

Serial number:
6EEF11096F7B5CDC42244636F32F2208

File PE Metadata
Compilation timestamp:
6/20/1992 12:22:17 AM

OS version:
1.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
2.25

CTPH (ssdeep):
12288:ovpFQ3p4Rrxgk1LcJ/wUvDURrseKFk+1uee/x1QgOSAd2tFtOh2rp6CrBx02f:ovc3Gek1wFwADEVsVlgLDtOhQjrg

Entry address:
0x9C40

Entry point:
55, 8B, EC, 83, C4, C4, 53, 56, 57, 33, C0, 89, 45, F0, 89, 45, DC, E8, 86, 94, FF, FF, E8, 8D, A6, FF, FF, E8, 1C, A9, FF, FF, E8, 53, C9, FF, FF, E8, 9A, C9, FF, FF, E8, C9, F2, FF, FF, E8, 30, F4, FF, FF, 33, C0, 55, 68, FC, A2, 40, 00, 64, FF, 30, 64, 89, 20, 33, D2, 55, 68, C5, A2, 40, 00, 64, FF, 32, 64, 89, 22, A1, 14, C0, 40, 00, E8, 96, FE, FF, FF, E8, C9, FA, FF, FF, 8D, 55, F0, 33, C0, E8, 83, CF, FF, FF, 8B, 55, F0, B8, 24, CE, 40, 00, E8, 32, 95, FF, FF, 6A, 02, 6A, 00, 6A, 01, 8B, 0D, 24, CE...
 
[+]

Entropy:
7.7899

Packer / compiler:
Inno Setup v5.x - Installer Maker

Code size:
37 KB (37,888 bytes)

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

http://cdnus.wawosodadol.com/app/Udownloadsoft/.../Firefox.exe

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