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firefox-64bit-x64_setup.exe

WebSys, s.r.o.

The installer utilizes the installCore download manager which may bundle additional offers for various ad-supported toolbars, extensions and utilities. The application firefox-64bit-x64_setup.exe by WebSys, s.r.o 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 installCore 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:
WebSys, s.r.o.  (signed and verified)

MD5:
189c5114b1461e65acbf6890796ad7a6

SHA-1:
6fa8831c4df77bc740888a84d0461a29688814e2

SHA-256:
0e0923d777b105bc26df1c1c6de60fd9abb4a8ade27507966f826e9032062d05

Scanner detections:
1 / 68

Status:
Potentially unwanted

Explanation:
Uses the InstallCore monetization platform to install additional offers that might include adware.

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 1:58:20 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.installCore.WebSyssro.Installer (M)
16.2.13.4

File size:
682.4 KB (698,816 bytes)

File type:
Executable application (Win32 EXE)

Bundler/Installer:
installCore (using Inno Setup)

Common path:
C:\users\{user}\downloads\firefox-64bit-x64_setup.exe

Digital Signature
Signed by:
WebSys, s.r.o.

Authority:
COMODO CA Limited

Valid from:
2/10/2014 7:00:00 AM

Valid to:
2/11/2015 6:59:59 AM

Subject:
CN="WebSys, s.r.o.", O="WebSys, s.r.o.", STREET=Namestie sv. Martina 9, L=Holid, S=Slovakia, PostalCode=90851, C=SK

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

Serial number:
00B6DBC4D5DDB70F36487D154735DE96E7

File PE Metadata
Compilation timestamp:
6/20/1992 5:22:17 AM

OS version:
1.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
2.25

CTPH (ssdeep):
12288:FevpcG7GR8AD16FvmUfEGSWyZYIhBsr+sT2hfXq6dIl+lqufhIr:FevyG7oRD16FeU39Z+sm9M/uCr

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:
7.8486

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

Code size:
37 KB (37,888 bytes)

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