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{786e0460-9b1c-4665-ac61-0d36341cac47}w64.sys

PowerfulBrowse

Part of the Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The file {786e0460-9b1c-4665-ac61-0d36341cac47}w64.sys by PowerfulBrowse 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 “{786e0460-9b1c-4665-ac61-0d36341cac47}w64”.
Publisher:
StdLib  (signed by PowerfulBrowse)

Product:
StdLib

Version:
1.4.4.6 built by: WinDDK

MD5:
d8b1ecfb800731dc69ef6de3ff84a89b

SHA-1:
fdc7efd94899ec3de8a859e935baa32685f13d2f

SHA-256:
c9650fbfce9d7957ec2a770ad475309cb83dd023a86fed3ab282b2156c581bef

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:
4/6/2025 2:58:15 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Yontoo.Powerful (M)
16.7.3.15

File size:
47.6 KB (48,792 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\{786e0460-9b1c-4665-ac61-0d36341cac47}w64.sys

Digital Signature
Signed by:
PowerfulBrowse

Authority:
VeriSign, Inc.

Valid from:
3/17/2015 7:00:00 PM

Valid to:
5/16/2016 6:59:59 PM

Subject:
CN=PowerfulBrowse, O=PowerfulBrowse, L=Santa Monica, 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:
5BD9F675D1AB6190F2C5638516563F26

File PE Metadata
Compilation timestamp:
9/5/2015 9:42:29 AM

OS version:
6.1

OS bitness:
Win64

Subsystem:
Native (none required)

Linker version:
9.0

CTPH (ssdeep):
768:lu7G2EjsnyXeOUEGG0LA8tWFZuL470h6aqxcCT2kvsVRwlZD33/y:EFID6EGnLA8AFJTNEVmDa

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:
6.3928

Code size:
34.5 KB (35,328 bytes)

Driver
Display name:
{786e0460-9b1c-4665-ac61-0d36341cac47}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.