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firefox_setup.exe

The application firefox_setup.exe has been detected as a potentially unwanted program by 16 anti-malware scanners. The program is a setup application that uses the Inno Setup 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. The file has been seen being downloaded from downloader.ez-download.com.
MD5:
2b559c735709d8e85c0b5adbd4f570af

SHA-1:
3b845b8e35c254f0987a4a0e3a6aedec7d95322f

SHA-256:
197c605e6f0363604417f7671cd8b972900f0c2a07c885d5ec84c9e157a62007

Scanner detections:
16 / 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.

Analysis date:
4/19/2024 1:23:00 AM UTC  (today)

Scan engine
Detection
Engine version

Agnitum Outpost
PUA.InstallCore
7.1.1

Avira AntiVirus
PUA/InstallCore.Gen7
8.3.1.6

avast!
Win32:Malware-gen
2014.9-150815

AVG
Adware InstallCore
2016.0.3017

Comodo Security
Application.Win32.InstallCore.KAU
22334

Dr.Web
Adware.InstallCore.133
9.0.1.0227

ESET NOD32
Win32/InstallCore.BY potentially unwanted application
9.7.0.302.0

F-Prot
W32/A-dbe1ec51
v6.4.7.1.166

herdProtect (fuzzy)
variant of ie8_setup.exe
2015.9.28.15

K7 AntiVirus
Unwanted-Program
13.204.16140

Malwarebytes
PUP.Optional.InstallCore.A
v2015.08.15.09

NANO AntiVirus
Riskware.Win32.InstallCore.dimzfh
0.30.24.1636

Sophos
PUA 'Install Core'
5.15

Total Defense
Win32/InstallCore.A!generic
37.1.62.1

Vba32 AntiVirus
Downware.InstallCore
3.12.26.4

VIPRE Antivirus
InstallCore
40828

File size:
639.6 KB (654,960 bytes)

File type:
Executable application (Win32 EXE)

Installer:
Inno Setup

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

File PE Metadata
Compilation timestamp:
6/19/1992 6:22:17 PM

OS version:
1.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
2.25

CTPH (ssdeep):
12288:QyMJfsG0f8Qe7AHvVhDiA1/NG4mYegrgqBjszwIAkr6s7N4l4r6ds:QyMJfsbTe7crf1oLhghBjsznAkrZ7xss

Entry address:
0x98CC

Entry point:
55, 8B, EC, 83, C4, CC, 53, 56, 57, 33, C0, 89, 45, F0, 89, 45, DC, E8, FA, 97, FF, FF, E8, 01, AA, FF, FF, E8, 2C, CC, FF, FF, E8, 73, CC, FF, FF, E8, 0A, F3, FF, FF, E8, 71, F4, FF, FF, 33, C0, 55, 68, 76, 9F, 40, 00, 64, FF, 30, 64, 89, 20, 33, D2, 55, 68, 2C, 9F, 40, 00, 64, FF, 32, 64, 89, 22, A1, 14, B0, 40, 00, E8, 9B, FE, FF, FF, E8, 26, FA, FF, FF, 8D, 55, F0, 33, C0, E8, E0, D0, FF, FF, 8B, 55, F0, B8, D8, BD, 40, 00, E8, AB, 98, FF, FF, 6A, 02, 6A, 00, 6A, 01, 8B, 0D, D8, BD, 40, 00, B2, 01, B8...
 
[+]

Entropy:
7.8230

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

Code size:
36 KB (36,864 bytes)

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

http://downloader.ez-download.com/download.php?id=65c0fee9d122da246a8b965859994a415da86b32&z=0&p=eyJweSI6ImV6IiwicnMiOiJiaW5nIiwicnQiOiJzZWFyY2giLCJjIjoidXMiLCJvIjoid2luOCIsImIiOiJjaDI3IiwidV9pZCI6ImV6XzUyYTJkOWUwZjI1MWMwLjEwNzE3MjI5IiwicGFfaWQiOiIwIiwic3RfaWQiOiIwIiwic3BfaWQiOiIwMDA0LTAwMDAiLCJ0cyI6MTM4NjQwNDMyMSwia3ciOiJmaXJlZm94IiwiY3UiOiJmaXJlZm94IiwiY2EiOm51bGx9

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