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1stbrowseruninstall.exe

SienBrowser

SIEN S.A.

This is the SIEN AppScion Installer which bundles applications with offers for additional 3rd party software, mostly unwanted adware, and may be installed with minimal consent. The application 1stbrowseruninstall.exe, “SIEN Browser Installer” by SIEN S.A 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 SIEN SuperInstall installer. This is the uninstaller utility registered in the Windows Control Panel for the program 1stBrowser by Sien S.A..
Publisher:
SIEN  (signed by SIEN S.A.)

Product:
SienBrowser

Description:
SIEN Browser Installer

Version:
14.7.25.0

MD5:
9e53e09defca09709e01643917dcbd8a

SHA-1:
3ed99e66bab6766c842c2f5d9dce24f850d789a7

SHA-256:
201d7cf4b4cf3368f97ca9473ee080b8e47af02e82c4b426bf1ae82cb75b78ad

Scanner detections:
1 / 68

Status:
Potentially unwanted

Note:
Our current pool of anti-malware engines have not currently detected this file, however based on our own detection heuristics we feel that this file is unwanted.

Description:
This 'download manager' is also considered bundleware, a utility designed to download software (possibly legitimate or opensource) and bundle it with a number of optional offers including ad-supported utilities, toolbars, shopping comparison tools and browser extensions.

Analysis date:
12/23/2024 10:22:00 PM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Sien (M)
17.3.10.22

File size:
1016.8 KB (1,041,176 bytes)

Product version:
14.7.25.0

Copyright:
(c)SIEN S.A. All rights reserved.

Original file name:
Setup.exe

File type:
Executable application (Win32 EXE)

Bundler/Installer:
SIEN SuperInstall

Language:
English (United States)

Common path:
C:\users\{user}\appdata\local\1stbrowseruninstall\1stbrowseruninstall.exe

Digital Signature
Signed by:
SIEN S.A.

Authority:
GlobalSign nv-sa

Valid from:
2/17/2015 8:45:29 AM

Valid to:
6/12/2016 5:20:39 AM

Subject:
E=support@sien.com, CN=SIEN S.A., O=SIEN S.A., L=Paris, C=FR

Issuer:
CN=GlobalSign CodeSigning CA - SHA256 - G2, O=GlobalSign nv-sa, C=BE

Serial number:
112158A643D1C958507AAB7FE826772BFA60

File PE Metadata
Compilation timestamp:
7/9/2015 12:17:56 PM

OS version:
5.1

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
11.0

Entry address:
0x7EAD9

Entry point:
E8, A4, A7, 00, 00, E9, 7F, FE, FF, FF, 55, 8B, EC, 56, 8B, 75, 14, 85, F6, 75, 04, 33, C0, EB, 6D, 8B, 45, 08, 85, C0, 75, 13, E8, B0, 55, 00, 00, 6A, 16, 5E, 89, 30, E8, F5, AD, 00, 00, 8B, C6, EB, 53, 57, 8B, 7D, 10, 85, FF, 74, 14, 39, 75, 0C, 72, 0F, 56, 57, 50, E8, BF, 38, 00, 00, 83, C4, 0C, 33, C0, EB, 36, FF, 75, 0C, 6A, 00, 50, E8, 0D, 06, 00, 00, 83, C4, 0C, 85, FF, 75, 09, E8, 6F, 55, 00, 00, 6A, 16, EB, 0C, 39, 75, 0C, 73, 13, E8, 61, 55, 00, 00, 6A, 22, 5E, 89, 30, E8, A6, AD, 00, 00, 8B, C6...
 
[+]

Code size:
678.5 KB (694,784 bytes)

Program Uninstaller
Program name:
1stBrowser

Display publisher:
Sien S.A.

Display version:
42.0.2311.98

Uninstall string:
"C:\users\{user}\appdata\local\1stbrowseruninstall\1stbrowseruninstall.exe" \uninstall


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