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firefox_setup.exe

DownloadManager.exe

Optimum Installer

This adware bundler is distributed through Adknowledge's advertising supported software managers. The application firefox_setup.exe, “Setup ” by Optimum Installer has been detected as adware by 26 anti-malware scanners. The program is a setup application that uses the Adknowledge Fusion installer. 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:
DownloadManager  (signed by Optimum Installer)

Product:
DownloadManager.exe

Description:
Setup

Version:
2.4.1

MD5:
23b9bebff219dddde285483817c84bea

SHA-1:
171b94161b5cd622c689faa26d0910222b2a7b8e

SHA-256:
41c110ad98ddfecd7bf6c11cb429a237eab528ee06aaa70e2889f2b1bf91436c

Scanner detections:
26 / 68

Status:
Adware

Explanation:
This installer bundles various adware prorgams that may include toolbars and web browser advertising injectors/extensions.

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:
4/26/2024 4:20:48 AM UTC  (today)

Scan engine
Detection
Engine version

Agnitum Outpost
Adware.Agent
7.1.1

AhnLab V3 Security
PUP/Win32.IBryte
2014.07.21

Avira AntiVirus
Adware/iBryte.JH.2
7.11.163.22

avast!
Win32:Installer-J [PUP]
2014.9-160129

AVG
Adware Generic5
2017.0.2850

Clam AntiVirus
Win.Adware.Ibryte-79
0.98/19185

Comodo Security
ApplicUnwnt.Win32.AdWare.iBryte.H
18908

Dr.Web
Adware.Downware.899
9.0.1.029

ESET NOD32
Win32/Adware.iBryte.F application
10.7.0.302.0

Fortinet FortiGate
Riskware/IBryte
1/29/2016

F-Prot
W32/Ibryte.C.gen
v6.4.6.5.141

G Data
Win32.Adware.OptimumInst
16.1.24

IKARUS anti.virus
PUA.OptInstall
t3scan.1.6.1.0

K7 AntiVirus
Adware
13.181.12775

Kaspersky
not-a-virus:AdWare.Win32.Agent
14.0.0.745

Malwarebytes
Adware.IBryte
v2016.01.29.01

McAfee
Adware-FOO
5600.6506

NANO AntiVirus
Riskware.Win32.Agent.cstcmy
0.28.2.60881

nProtect
Trojan-Clicker/W32.iBryte.702248
14.07.20.01

Qihoo 360 Security
Malware.QVM10.Gen
1.0.0.1015

Reason Heuristics
PUP.Adknowledge.OptimumInstaller.Installer (M)
16.1.29.1

Rising Antivirus
PE:Malware.Agent!6.176
23.00.65.16127

Sophos
iBryte Optimum Installer
4.98

SUPERAntiSpyware
Adware.iBryte
9357

Vba32 AntiVirus
Adware.iBryte
3.12.26.3

VIPRE Antivirus
Threat.4778314
31208

File size:
719.3 KB (736,552 bytes)

Product version:
2.4.1

Original file name:
Setup.exe

File type:
Executable application (Win32 EXE)

Bundler/Installer:
Adknowledge Fusion

Language:
English (United States)

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

Digital Signature
Signed by:
Optimum Installer

Authority:
VeriSign, Inc.

Valid from:
10/10/2012 7:00:00 PM

Valid to:
11/7/2013 5:59:59 PM

Subject:
CN=Optimum Installer, OU=Digital ID Class 3 - Microsoft Software Validation v2, O=Optimum Installer, L=Kansas City, S=Missouri, 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:
7C5F27B776ADBBB7943F700066A490BF

File PE Metadata
Compilation timestamp:
2/22/2013 2:46:37 PM

OS version:
5.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
9.0

CTPH (ssdeep):
12288:SiovH4oVeRF2NDvG6c1pN6kzxQrkA+3VYIBWJpJKONrtxEkm:SiY4osRF2NDmpN6HrkfVBOXxPm

Entry address:
0x4FEE1

Entry point:
E8, 27, E3, 00, 00, E9, 78, FE, FF, FF, 8B, FF, 55, 8B, EC, 6A, 00, FF, 75, 14, FF, 75, 10, FF, 75, 0C, FF, 75, 08, E8, A0, E3, 00, 00, 83, C4, 14, 5D, C3, FF, 35, 34, 4B, 4A, 00, E8, 2A, 4E, 00, 00, 59, 85, C0, 74, 02, FF, D0, 6A, 19, E8, 57, A8, 00, 00, 6A, 01, 6A, 00, E8, 9F, E6, 00, 00, 83, C4, 0C, E9, 80, E5, 00, 00, 8B, FF, 55, 8B, EC, 8B, 45, 08, 66, 8B, 08, 40, 40, 66, 85, C9, 75, F6, 2B, 45, 08, D1, F8, 48, 5D, C3, 8B, FF, 55, 8B, EC, 8B, 55, 08, 53, 56, 57, 33, FF, 3B, D7, 74, 07, 8B, 5D, 0C, 3B...
 
[+]

Entropy:
6.4892

Code size:
444 KB (454,656 bytes)

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

http://secure.oi-installer1.com/o/.../Firefox_Setup.exe

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