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{29228e87-506b-4da9-a8b3-ab84c0900c0f}t.sys

Four Finders

Part of the Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The file {29228e87-506b-4da9-a8b3-ab84c0900c0f}t.sys by Four Finders 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 Windows kernel mode device driver named “{29228e87-506b-4da9-a8b3-ab84c0900c0f}t”.
Publisher:
StdLib  (signed by Four Finders)

Product:
StdLib

Version:
1.4.3.1 built by: WinDDK

MD5:
c96ccd9d04242f459e59fe587096ac40

SHA-1:
21876468a056d130add3081c686387d9548d4183

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:
5/21/2024 9:00:02 PM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Yontoo (M)
17.3.5.9

File size:
54.6 KB (55,872 bytes)

Product version:
1.4.3.1

Copyright:
Copyright © 2013 StdLib

Original file name:
StdLib.sys

File type:
Driver (Win32 SYS)

Language:
English (United States)

Common path:
C:\Windows\System32\drivers\{29228e87-506b-4da9-a8b3-ab84c0900c0f}t.sys

Digital Signature
Signed by:
Four Finders

Authority:
VeriSign, Inc.

Valid from:
1/22/2014 7:00:00 PM

Valid to:
1/23/2015 6:59:59 PM

Subject:
CN=Four Finders, OU=Digital ID Class 3 - Microsoft Software Validation v2, O=Four Finders, 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:
62BA09F2D5B6ECD8EB73CC14CFE0D9B9

File PE Metadata
Compilation timestamp:
11/10/2014 7:35:34 AM

OS version:
6.1

OS bitness:
Win32

Subsystem:
Native (none required)

Linker version:
9.0

Entry address:
0xA9BE

Entry point:
8B, FF, 55, 8B, EC, E8, BD, FF, FF, FF, 5D, E9, 2A, E4, FF, FF, CC, CC, 34, AA, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 04, AE, 00, 00, 94, 93, 00, 00, 20, AA, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 3A, AE, 00, 00, 80, 93, 00, 00, 2C, AA, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 56, AE, 00, 00, 8C, 93, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 26, AE, 00, 00, 12, AE, 00, 00, 00, 00, 00, 00, 42, AE, 00, 00, 00, 00, 00, 00, 2C, AB, 00, 00, 44, AB, 00, 00, 56, AB...
 
[+]

Entropy:
6.3454

Code size:
37 KB (37,888 bytes)

Driver
Display name:
{29228e87-506b-4da9-a8b3-ab84c0900c0f}t

Type:
Kernel device driver (KernelDriver)

Group:
PNP_TDI


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