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1stbrowser.exe

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 1stbrowser.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. While running, it connects to the Internet address www.ibbalance.com on port 443.
Publisher:
SIEN  (signed by SIEN S.A.)

Product:
Installer

Version:
3.48.3.2

MD5:
55e3ae84ef1355c591cab2d2bd5f0617

SHA-1:
a514e3bb2e7d34a7a42bf9072568eefac85921d0

SHA-256:
f3b03aa0ef0e6c40bc897ade6aa26c6441189c702d25d61c42327891ca7c2a38

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:
11/2/2024 7:21:35 PM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Sien (M)
17.3.16.3

File size:
3.7 MB (3,832,424 bytes)

Product version:
3.48.3.2

Copyright:
Copyright (C) 2015

Original file name:
Installer.exe

File type:
Executable application (Win32 EXE)

Bundler/Installer:
SIEN SuperInstall

Language:
English (United States)

Common path:
C:\users\{user}\downloads\1stbrowser.exe

Digital Signature
Signed by:
SIEN S.A.

Authority:
GlobalSign nv-sa

Valid from:
6/15/2015 4:50:10 PM

Valid to:
6/15/2016 4:50:10 PM

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:
11/25/2015 3:28:00 PM

OS version:
5.1

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
12.0

Entry address:
0x2092F1

Entry point:
E8, 55, 3E, 02, 00, E9, 39, FE, FF, FF, 8B, 4D, F4, 64, 89, 0D, 00, 00, 00, 00, 59, 5F, 5F, 5E, 5B, 8B, E5, 5D, 51, C3, 8B, 4D, F0, 33, CD, E8, EB, AB, FF, FF, E9, DD, FF, FF, FF, 8B, 4D, EC, 33, CD, E8, DC, AB, FF, FF, E9, CE, FF, FF, FF, 50, 64, FF, 35, 00, 00, 00, 00, 8D, 44, 24, 0C, 2B, 64, 24, 0C, 53, 56, 57, 89, 28, 8B, E8, A1, 90, 24, 72, 00, 33, C5, 50, FF, 75, FC, C7, 45, FC, FF, FF, FF, FF, 8D, 45, F4, 64, A3, 00, 00, 00, 00, C3, 50, 64, FF, 35, 00, 00, 00, 00, 8D, 44, 24, 0C, 2B, 64, 24, 0C, 53...
 
[+]

Code size:
2.5 MB (2,642,432 bytes)

The executing file has been seen to make the following network communications in live environments.

TCP (HTTP):
Connects to www.softologic.com  (174.37.181.31:80)

TCP (HTTP SSL):
Connects to www.ibbalance.com  (173.192.190.227:443)

TCP (HTTP):
Connects to stats-182385724-1591972470.us-east-1.elb.amazonaws.com  (54.221.252.69:80)

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