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utilbringstar.exe

BringStar

Part of the Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The application utilbringstar.exe by BringStar has been detected as adware by 1 anti-malware scanner with very strong indications that the file is a potential threat. It runs as a separate (within the context of its own process) windows Service named “Update BringStar”.
Publisher:
BringStar  (signed and verified)

Version:
1.0.5353.5484

MD5:
17f6e59abdb3fba2b6c90631655e0daa

SHA-1:
d5b3ea967b13ab98dc2063a6ff854291606436b2

SHA-256:
5e030a5da3f6a64249392a72a2595cb9267cc48f005c021b80b8f3f2adcb97fc

Scanner detections:
1 / 68

Status:
Adware

Explanation:
Belongs to the Sambreel/Yontoo progam that inserts various forms of advertising in the user's web browser, installed with minimal or no user consent.

Analysis date:
5/14/2024 5:22:17 PM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Yontoo.BringStar (M)
16.2.14.17

File size:
315.8 KB (323,360 bytes)

Product version:
1.0.5353.5484

Original file name:
BringStar.exe

File type:
Executable application (Win32 EXE)

Common path:
C:\Program Files\bringstar\bin\utilbringstar.exe

Digital Signature
Signed by:
BringStar

Authority:
VeriSign, Inc.

Valid from:
1/9/2014 1:00:00 AM

Valid to:
1/10/2015 12:59:59 AM

Subject:
CN=BringStar, OU=Digital ID Class 3 - Microsoft Software Validation v2, O=BringStar, L=San Diego, S=California, C=US

Issuer:
CN=VeriSign Class 3 Code Signing 2010 CA, OU=Terms of use at https://www.verisign.com/rpa (c)10, OU=VeriSign Trust Network, O="VeriSign, Inc.", C=US

Serial number:
0690B649CE1A1DFAAC570B0AAE6E5D30

File PE Metadata
Compilation timestamp:
8/28/2014 6:03:03 AM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows Console

Linker version:
8.0

.NET CLR dependent:
Yes

CTPH (ssdeep):
6144:rIFfAz3l1UCCspEY7ulkd7cvdBvw/LLcnzcmOXbsbA:rIFfyvIuLcQJgbA

Entry address:
0x4EBBA

Entry point:
FF, 25, 00, 20, 40, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 02, 00, 10, 00, 00, 00, 20, 00, 00, 80, 18, 00, 00, 00, CC, 02, 00, 80, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 01, 00, 01, 00, 00, 00, 38, 00, 00, 80, 00, 00...
 
[+]

Developed / compiled with:
Microsoft Visual C# / Basic .NET

Code size:
307 KB (314,368 bytes)

Service
Display name:
Update BringStar

Type:
Win32OwnProcess


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