home

{4d5b06fb-cdbe-4c10-b5d3-75e058fc8027}t.sys

WebSparkle

Part of the Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The file {4d5b06fb-cdbe-4c10-b5d3-75e058fc8027}t.sys by WebSparkle 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 “{4d5b06fb-cdbe-4c10-b5d3-75e058fc8027}t”.
Publisher:
StdLib  (signed by WebSparkle)

Product:
StdLib

Version:
1.4.3.1 built by: WinDDK

MD5:
8fb2f23e016665666a57099ef97f3938

SHA-1:
71f40c96117d9d390b37e53ed88c729c1f726552

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:
4/18/2024 4:59:05 PM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Yontoo.WebSparkle (M)
16.2.15.19

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\{4d5b06fb-cdbe-4c10-b5d3-75e058fc8027}t.sys

Digital Signature
Signed by:
WebSparkle

Authority:
VeriSign, Inc.

Valid from:
8/13/2013 7:00:00 AM

Valid to:
8/14/2015 6:59:59 AM

Subject:
CN=WebSparkle, OU=Digital ID Class 3 - Microsoft Software Validation v2, O=WebSparkle, 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:
36202DE0CBDFE10F57978E3766DB2ED4

File PE Metadata
Compilation timestamp:
11/28/2014 11:24:35 PM

OS version:
6.1

OS bitness:
Win32

Subsystem:
Native (none required)

Linker version:
9.0

CTPH (ssdeep):
768:Ro6LohZZMITF7zKLV3fXoKKxaFtFkW4VIWPLqvH9EQZLN+p60Ceh5j:Ro6+pT1UvYDEHFV4nPe/kpvCe

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:
6.3443

Code size:
37 KB (37,888 bytes)

Driver
Display name:
{4d5b06fb-cdbe-4c10-b5d3-75e058fc8027}t

Type:
Kernel device driver (KernelDriver)

Group:
PNP_TDI


Remove {4d5b06fb-cdbe-4c10-b5d3-75e058fc8027}t.sys - Powered by Reason Core Security
herdProtect is a second line of defense malware removal platform powered by 68 anti-malware engines in the cloud. Since no single anti-malware program is perfect 100% of the time, herdProtect utilizes a 'herd' of multiple engines to guarantee the widest coverage and the earliest possible detection.