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firefoxsetup.exe

Program

The application firefoxsetup.exe, “Program Setup ” has been detected as a potentially unwanted program by 6 anti-malware scanners. The program is a setup application that uses the installCore installer, however the file is not signed with an authenticode signature from a trusted source. The setup program uses the InstallCore engine which may bundle additional software offers including toolbars and browser extensions. 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:
Program

Product:
Program

Description:
Program Setup

Version:
5.4.3.3

MD5:
02ef7df8b216edc3b1e38c92b2613126

SHA-1:
379884901380de24c48d5588f1f8f223c7e47236

SHA-256:
2ecf55aa3e58e4744b0749098eb378f530fe46710c0fd8f0e12bdde21691273e

Scanner detections:
6 / 68

Status:
Potentially unwanted

Explanation:
Uses the InstallCore download manager to install additional potentially unwanted software which may include extensions such as DealPly and various toolbars.

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:
4/27/2024 12:50:30 AM UTC  (today)

Scan engine
Detection
Engine version

Baidu Antivirus
Adware.Win32.InstallCore
4.0.3.15717

ESET NOD32
Win32/InstallCore.AAB potentially unwanted application
7.0.302.0

G Data
Win32.Application.InstallCore.EG
15.6.25

Qihoo 360 Security
HEUR/QVM42.1.Malware.Gen
1.0.0.1015

Reason Heuristics
PUP.InstallCore.Bundler (M)
15.7.17.14

Vba32 AntiVirus
Malware-Cryptor.InstallCore.gen
3.12.26.4

File size:
688.3 KB (704,788 bytes)

Product version:
3.4

File type:
Executable application (Win32 EXE)

Bundler/Installer:
installCore (using Inno Setup)

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

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:qbdGDXJl3Q2DAwvvMeX8rIEu1bqLkvEspgcx+ramVWQiX+T1hG7:qbdS/3Q2DAwvvTX88BlKkvEsp98rZsQC

Entry address:
0xA5F8

Entry point:
55, 8B, EC, 83, C4, C4, 53, 56, 57, 33, C0, 89, 45, F0, 89, 45, DC, E8, CE, 8A, FF, FF, E8, D5, 9C, FF, FF, E8, 64, 9F, FF, FF, E8, 07, A0, FF, FF, E8, A6, BF, FF, FF, E8, 11, E9, FF, FF, E8, 78, EA, FF, FF, 33, C0, 55, 68, C9, AC, 40, 00, 64, FF, 30, 64, 89, 20, 33, D2, 55, 68, 92, AC, 40, 00, 64, FF, 32, 64, 89, 22, A1, 14, C0, 40, 00, E8, 26, F5, FF, FF, E8, 11, F1, FF, FF, 80, 3D, 34, B2, 40, 00, 00, 74, 0C, E8, 23, F6, FF, FF, 33, C0, E8, C4, 97, FF, FF, 8D, 55, F0, 33, C0, E8, B6, C5, FF, FF, 8B, 55...
 
[+]

Entropy:
7.8904

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

Code size:
39.5 KB (40,448 bytes)

The executing file has been seen to make the following network communications in live environments.

TCP (HTTP):
Connects to ftp1-zlb.vips.scl3.mozilla.com  (63.245.215.46:80)

TCP (HTTP):
Connects to ec2-54-77-76-227.eu-west-1.compute.amazonaws.com  (54.77.76.227:80)

TCP (HTTP):
Connects to ec2-54-243-96-231.compute-1.amazonaws.com  (54.243.96.231:80)

TCP (HTTP):
Connects to ec2-54-243-153-163.compute-1.amazonaws.com  (54.243.153.163:80)

TCP (HTTP):
Connects to ec2-54-186-47-57.us-west-2.compute.amazonaws.com  (54.186.47.57:80)

TCP (HTTP):
Connects to ec2-107-20-182-77.compute-1.amazonaws.com  (107.20.182.77:80)

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