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updateappstein.exe

Appstein

Part of the Yontoo web browser plugin (delivers advertisements to the web browser in the form of injected banners, text-links, popups, etc.) the updater mechanism for Appstein will automatically keep the extension patched by downloaded new functionality which is auto-enabled by default. The application updateappstein.exe by Appstein has been detected as adware by 6 anti-malware scanners. It runs as a separate (within the context of its own process) windows Service named “Update Appstein”. It will plug into the web browser and display context-based advertisements by overwriting existing ads or by inserting new ones on various web pages.
Publisher:
Appstein  (signed and verified)

Version:
1.0.5354.461

MD5:
9e0033412a9ad0f507b2e9c31d70b6e4

SHA-1:
5492cd0a49710b54d1f36f8d68dc4db9877f0b0a

SHA-256:
d69e3f46d5b63da109f2ef51731bfb76cbc3ffcbedf92c5ff5ad44aceb492fc2

Scanner detections:
6 / 68

Status:
Adware

Explanation:
Part of the Yontoo adware web browser extension update process.

Analysis date:
4/24/2024 11:06:51 PM UTC  (a few moments ago)

Scan engine
Detection
Engine version

Avira AntiVirus
APPL/BrowseFox.Gen
7.11.169.248

ESET NOD32
Win32/BrowseFox.H potentially unwanted application
7.0.302.0

F-Prot
W32/A-db42cb3b
v6.4.7.1.166

IKARUS anti.virus
PUA.BrowseFox
t3scan.1.7.5.0

Kaspersky
not-a-virus:HEUR:AdWare.MSIL.Kranet
14.0.0.3331

Reason Heuristics
Adware.Yontoo.Service.O
14.8.29.17

File size:
315.8 KB (323,352 bytes)

Product version:
1.0.5354.461

Original file name:
Appstein.exe

File type:
Executable application (Win32 EXE)

Language:
Language Neutral

Common path:
C:\Program Files\appstein\updateappstein.exe

Digital Signature
Signed by:
Appstein

Authority:
VeriSign, Inc.

Valid from:
5/1/2014 7:00:00 PM

Valid to:
5/2/2015 6:59:59 PM

Subject:
CN=Appstein, OU=Digital ID Class 3 - Microsoft Software Validation v2, O=Appstein, 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:
06773AB7EC074782D28F824F3C5632C1

File PE Metadata
Compilation timestamp:
8/28/2014 8:15:37 PM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows Console

Linker version:
8.0

.NET CLR dependent:
Yes

CTPH (ssdeep):
6144:BdBfAzWimtz4jtS27HJDd7uy+5/aLLsuYiVeM6OXb2E:BdBffR4TLsjiVzRqE

Entry address:
0x4EBB6

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, 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...
 
[+]

Entropy:
6.0926

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

Code size:
307 KB (314,368 bytes)

Service
Display name:
Update Appstein

Type:
Win32OwnProcess


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