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{f365189d-3e18-4f01-8423-a1ed102ed962}w64.sys

Web Layers

Part of the Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The file {f365189d-3e18-4f01-8423-a1ed102ed962}w64.sys by Web Layers 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 64-bit kernel mode device driver named “{f365189d-3e18-4f01-8423-a1ed102ed962}w64”.
Publisher:
StdLib  (signed by Web Layers)

Product:
StdLib

Version:
1.4.4.6 built by: WinDDK

MD5:
60db648755610ccdba10e6bcc8e74025

SHA-1:
6b8ae6859fd54fbdee656c71fd3744dec112da91

SHA-256:
97fa863e09a2cf663083bcc5ce722418eff140aae67e68947051921d2ac16f09

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:
5/1/2024 6:05:55 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Yontoo (M)
17.3.14.8

File size:
47.3 KB (48,456 bytes)

Product version:
1.4.4.6

Copyright:
Copyright © 2013 StdLib

Original file name:
StdLib.sys

File type:
Driver (Win64 SYS)

Language:
English (United States)

Common path:
C:\Windows\System32\drivers\{f365189d-3e18-4f01-8423-a1ed102ed962}w64.sys

Digital Signature
Signed by:
Web Layers

Authority:
Symantec Corporation

Valid from:
8/3/2015 5:00:00 PM

Valid to:
10/2/2016 4:59:59 PM

Subject:
CN=Web Layers, O=Web Layers, L=Santa Monica, S=California, C=US

Issuer:
CN=Symantec Class 3 SHA256 Code Signing CA, OU=Symantec Trust Network, O=Symantec Corporation, C=US

Serial number:
2B5CEE8A350D1CE33516994DA29EC29D

File PE Metadata
Compilation timestamp:
8/24/2015 11:09:02 PM

OS version:
6.1

OS bitness:
Win64

Subsystem:
Native (none required)

Linker version:
9.0

Entry address:
0xC064

Entry point:
48, 83, EC, 28, 4C, 8B, C2, 4C, 8B, C9, E8, 95, FF, FF, FF, 49, 8B, D0, 49, 8B, C9, 48, 83, C4, 28, E9, E2, 50, FF, FF, CC, CC, 78, C2, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 54, C6, 00, 00, A0, 91, 00, 00, 28, C1, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, DA, CA, 00, 00, 50, 90, 00, 00, D8, C0, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, D2, CB, 00, 00, 00, 90, 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, B6, CB, 00, 00, 00, 00, 00, 00, A2, CB, 00, 00...
 
[+]

Entropy:
6.3814

Code size:
34.5 KB (35,328 bytes)

Driver
Display name:
{f365189d-3e18-4f01-8423-a1ed102ed962}w64

Type:
Kernel device driver (KernelDriver)

Group:
PNP_TDI


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.