file extension changer.exe

FIRSERIA, S.L.

The setup program uses the Firseria/Solimba AppInstaller (DownloadMR) which is a monetization download manager that bundles additional adware offers, typically by wrapping legitimate applications. The application file extension changer.exe by FIRSERIA, S.L has been detected as adware 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 Solimba DownloadMR installer. The installer uses the Solimba download manager to push adware offers during the download and setup process. Bundled adware includes search and shopping web browser toolbars.
Publisher:
Frserira s·l·  (signed by FIRSERIA, S.L.)

Description:
DownloadMnger

Version:
1.0.0.27

MD5:
aa2a97a4dc1070592d7632263b70b0df

SHA-1:
32db2b8f86cb9ed86671c9d8ef46afda084194b2

SHA-256:
b79221105aeb4a6cea64c94b86f31929108dc3b98b997c509d3f978b1ee7b906

Scanner detections:
1 / 68

Status:
Adware

Explanation:
Uses the Solimba installer to bundle adware offers.

Description:
This is an installer which may bundle legitimate applications with offers for additional 3rd-party applications that may be unwanted by the user. While the installer contains an 'opt-out' feature this is not set be defult and is usually overlooked.

Analysis date:
2/25/2025 8:16:30 PM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Solimba (M)
16.7.19.23

File size:
164.8 KB (168,760 bytes)

Product version:
3.0.24

Copyright:
copyright·©·2013

Original file name:
install·exe

File type:
Executable application (Win32 EXE)

Bundler/Installer:
Solimba DownloadMR

Common path:
C:\users\{user}\downloads\file extension changer.exe

Digital Signature
Signed by:

Authority:
Thawte, Inc.

Valid from:
7/23/2013 8:00:00 PM

Valid to:
7/24/2014 7:59:59 PM

Subject:
CN="FIRSERIA, S.L.", OU=IT, O="FIRSERIA, S.L.", L=Badalona, S=Barcelona, C=ES

Issuer:
CN=Thawte Code Signing CA - G2, O="Thawte, Inc.", C=US

Serial number:
73C4780FAC0CD497B0778732FB8AF673

File PE Metadata
Compilation timestamp:
12/6/2013 5:37:39 AM

OS version:
5.1

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
10.0

CTPH (ssdeep):
3072:YMe92LW1YQUzMqAl2X11uZaAgdUMTQJYG0LZsoGxM6iGqy/ESDJT/aQ8ytf03eW4:YL9PKQUelYrugAg2MyYs1izkEGOQ8ytf

Entry address:
0x72DF0

Entry point:
60, BE, 00, 10, 45, 00, 8D, BE, 00, 00, FB, FF, 57, 89, E5, 8D, 9C, 24, 80, C1, FF, FF, 31, C0, 50, 39, DC, 75, FB, 46, 46, 53, 68, 23, 03, 07, 00, 57, 83, C3, 04, 53, 68, ED, 1D, 02, 00, 56, 83, C3, 04, 53, 50, C7, 03, 03, 00, 02, 00, 90, 90, 90, 90, 90, 55, 57, 56, 53, 83, EC, 7C, 8B, 94, 24, 90, 00, 00, 00, C7, 44, 24, 74, 00, 00, 00, 00, C6, 44, 24, 73, 00, 8B, AC, 24, 9C, 00, 00, 00, 8D, 42, 04, 89, 44, 24, 78, B8, 01, 00, 00, 00, 0F, B6, 4A, 02, 89, C3, D3, E3, 89, D9, 49, 89, 4C, 24, 6C, 0F, B6, 4A...
 
[+]

Code size:
140 KB (143,360 bytes)

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

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