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1sttooluninstall.exe

1stTool Installer

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 1sttooluninstall.exe 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.
Publisher:
1stTool S.R.L.  (signed by SIEN S.A.)

Product:
1stTool Installer

Version:
10.6.1.1

MD5:
86d32878308138ea971ba47660ffa2c5

SHA-1:
c7b378acac317a95596a869aadd681d721a5f934

SHA-256:
738f1f8cb55578e16663465a3989aabbefabc389f5ac7a4f5eb05c7129482a8a

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 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:
5/17/2024 9:56:25 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Sien (M)
17.3.16.5

File size:
1.5 MB (1,619,040 bytes)

Product version:
10.6.1.1

Copyright:
(c) 1stTool S.R.L. All rights reserved.

Original file name:
1stToolBootstrapper.exe

File type:
Executable application (Win32 EXE)

Bundler/Installer:
SIEN SuperInstall

Language:
English (United States)

Common path:
C:\users\{user}\appdata\local\1stbrowser\1sttool\1sttooluninstall\inst\bootstrapper\1sttooluninstall.exe

Digital Signature
Signed by:
SIEN S.A.

Authority:
GlobalSign nv-sa

Valid from:
6/15/2015 11:50:10 AM

Valid to:
6/15/2016 11:50:10 AM

Subject:
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:
1121D1DF1CB73206967A3311ED8724668997

File PE Metadata
Compilation timestamp:
2/8/2016 9:57:36 AM

OS version:
5.1

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
11.0

Entry address:
0x1F127

Entry point:
E8, C3, D3, 00, 00, E9, 7F, FE, FF, FF, 3B, 0D, 44, 18, 57, 00, 75, 02, F3, C3, E9, 13, D5, 00, 00, 55, 8B, EC, 8B, 45, 0C, 83, EC, 20, 56, 57, 6A, 08, 59, BE, 68, E5, 54, 00, 8D, 7D, E0, F3, A5, 8B, 4D, 08, 5F, 5E, 85, C0, 74, 0D, F6, 00, 10, 74, 08, 8B, 01, 8B, 40, FC, 8B, 40, 18, 89, 4D, F8, 89, 45, FC, 85, C0, 74, 0C, F6, 00, 08, 74, 07, C7, 45, F4, 00, 40, 99, 01, 8D, 45, F4, 50, FF, 75, F0, FF, 75, E4, FF, 75, E0, FF, 15, 80, D1, 54, 00, C9, C2, 08, 00, 8B, 4D, F4, 64, 89, 0D, 00, 00, 00, 00, 59, 5F...
 
[+]

Code size:
1.3 MB (1,356,800 bytes)

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