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firefoxsetup.exe

Internet Software

Application

The application firefoxsetup.exe, “Internet Software Setup ” has been detected as a potentially unwanted program 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 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.
Publisher:
Application

Product:
Internet Software

Description:
Internet Software Setup

Version:
3.8.4.4

MD5:
52fe39733ac36fd1ca8203d2e7ce25b7

SHA-1:
bc61a5c4892272b9aa885c2e12da55d09fb6715d

SHA-256:
4332e018b8b0120404e87fff203e6139a4e53ec0a7102efa4be41adea0a00b9e

Scanner detections:
1 / 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:
1/13/2025 1:39:00 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.InstallCore.RES (M)
16.6.3.9

File size:
777.6 KB (796,243 bytes)

Product version:
5.6

File type:
Executable application (Win32 EXE)

Installer:
Inno Setup

Language:
Language Neutral

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

File PE Metadata
Compilation timestamp:
6/20/1992 3:52:17 AM

OS version:
1.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
2.25

CTPH (ssdeep):
24576:KeFbfhdyJXiDrNrzm1CZ6Egh1UgHRjuWKf4mriK:KMfAqRi1CQfYgHVY4mriK

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, BF, A9, FF, FF, E8, 5E, 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:
7.8899

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

Code size:
37 KB (37,888 bytes)

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

http://happygood.info/?dl=1&pi=Ajg4NzcyAZgzAw==&osos=VdluDrW3cw==&gclid=CK2vxpvU-sQCFRcOjgodGZEA_w&dr=cHaWck1mIXvlDmW4vExthXN3DKV0OSDzcj1zcmAmIT1zvm2yIKiWvmREhKVuvmNjhLlOvmNBDz1l QDjhTnmDZ0wvmNpDZ1fAZLRAZA3ATgyvm5EIKiWXzMzAZM3NZg1Njny&pd=7KN0IXDlUKluc3xP rRzUEVzUmNJ i==&campaignId=9jn0AjCROZMyAZMq

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