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1stbrowser.exe

Installer

SIEN SA

The application 1stbrowser.exe by SIEN SA has been detected as a potentially unwanted program by 1 anti-malware scanner with very strong indications that the file is a potential threat. This is a self-extracting archive and installer and has been known to bundle potentially unwanted software. The file has been seen being downloaded from up.br.bav.baidu.com. While running, it connects to the Internet address www.ibbalance.com on port 443.
Publisher:
S  (signed by SIEN SA)

Product:
Installer

Version:
4.21.4.1

MD5:
35ce6fc635ec431d39ce80dc5e056864

SHA-1:
fc1cbc191a332fd0a65448b8bd1c5f9e2ce15461

SHA-256:
633f22899224bd754b54eac707979e3d7d8ffe5d8f4e097303521ce46cfc26a2

Scanner detections:
1 / 68

Status:
Potentially unwanted

Analysis date:
12/25/2024 1:55:16 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Sien (M)
16.7.20.14

File size:
2.1 MB (2,211,944 bytes)

Product version:
4.21.4.1

Copyright:
Copyright (C) 2016

Original file name:
Installer.exe

File type:
Executable application (Win32 EXE)

Language:
English (United States)

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

Digital Signature
Signed by:
SIEN SA

Authority:
GlobalSign nv-sa

Valid from:
9/14/2015 9:05:56 AM

Valid to:
9/14/2016 9:05:56 AM

Subject:
CN=SIEN SA, O=SIEN SA, L=Paris, C=FR

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

Serial number:
11213DB3C4AD369B17F720086E1BBB7BB700

File PE Metadata
Compilation timestamp:
5/19/2016 10:05:17 AM

OS version:
5.1

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
14.0

CTPH (ssdeep):
49152:9TVpfC01iCaPUUlCAaLXLWUG6R6Gdc7B0i5as9ttmnxlRHO4/5XkSaK/F0oAOdKA:9TVpK013QUgCFXLzG6RG35X5mnxlRHOO

Entry address:
0x1320E4

Entry point:
E8, 6F, 08, 00, 00, E9, 80, FE, FF, FF, 8B, 4D, F4, 64, 89, 0D, 00, 00, 00, 00, 59, 5F, 5F, 5E, 5B, 8B, E5, 5D, 51, F2, C3, 8B, 4D, F0, 33, CD, F2, E8, 5A, F5, FF, FF, F2, E9, DA, FF, FF, FF, 8B, 4D, EC, 33, CD, F2, E8, 49, F5, FF, FF, F2, E9, C9, 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, 14, 21, 5F, 00, 33, C5, 50, FF, 75, FC, C7, 45, FC, FF, FF, FF, FF, 8D, 45, F4, 64, A3, 00, 00, 00, 00, F2, C3, 50, 64, FF, 35, 00, 00, 00, 00, 8D, 44, 24...
 
[+]

Code size:
1.6 MB (1,635,840 bytes)

The file 1stbrowser.exe has been seen being distributed by the following URL.

http://up.br.bav.baidu.com/?rh=0EB31F8667DEE15505A131A0A565C022&baidusign=26170333&baidurand=4952

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)

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