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{3b232d24-d5de-4194-b4d7-d53b41a09748}w.sys

lucky leap

Part of the Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The file {3b232d24-d5de-4194-b4d7-d53b41a09748}w.sys by lucky leap 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 “{3b232d24-d5de-4194-b4d7-d53b41a09748}w”.
Publisher:
StdLib  (signed by lucky leap)

Product:
StdLib

Version:
1.4.3.1 built by: WinDDK

MD5:
99cabefd403101c2f7a6595fb71248da

SHA-1:
c3c7c9b2cf9357ef913549f071ad0038133958d3

SHA-256:
e3729adb3b52d8119e6b840b9dda280fb4d32ada7edc7a799d648eb98735fa64

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:
4/20/2024 3:42:40 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Yontoo (M)
17.1.31.20

File size:
38.2 KB (39,104 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\{3b232d24-d5de-4194-b4d7-d53b41a09748}w.sys

Digital Signature
Signed by:
lucky leap

Authority:
VeriSign, Inc.

Valid from:
8/13/2013 5:00:00 AM

Valid to:
8/14/2015 4:59:59 AM

Subject:
CN=lucky leap, OU=Digital ID Class 3 - Microsoft Software Validation v2, O=lucky leap, 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:
6A5011DFCDBB457548BCC92ED7587788

File PE Metadata
Compilation timestamp:
9/13/2014 4:32:59 AM

OS version:
6.1

OS bitness:
Win32

Subsystem:
Native (none required)

Linker version:
9.0

Entry address:
0x903E

Entry point:
8B, FF, 55, 8B, EC, E8, BD, FF, FF, FF, 5D, E9, 20, 80, FF, FF, CC, CC, 74, 91, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, AE, 94, 00, 00, C0, 70, 00, 00, B4, 90, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 04, 95, 00, 00, 00, 70, 00, 00, EC, 90, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, A0, 98, 00, 00, 38, 70, 00, 00, C4, 90, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 98, 99, 00, 00, 10, 70, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, DC, 94, 00, 00, F0, 94, 00, 00, C8, 94...
 
[+]

Entropy:
6.6578

Code size:
24.5 KB (25,088 bytes)

Driver
Display name:
{3b232d24-d5de-4194-b4d7-d53b41a09748}w

Type:
Kernel device driver (KernelDriver)

Group:
PNP_TDI


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