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{646e947e-f0e6-4d0e-b21e-d62ca97183e2}w64.sys

Webporpoise

Part of the Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The file {646e947e-f0e6-4d0e-b21e-d62ca97183e2}w64.sys by Webporpoise has been detected as adware by 7 anti-malware scanners. It runs as a Windows 64-bit kernel mode device driver named “{646e947e-f0e6-4d0e-b21e-d62ca97183e2}w64”.
Publisher:
StdLib  (signed by Webporpoise)

Product:
StdLib

Version:
1.4.3.1 built by: WinDDK

MD5:
58cd82ed83a19c096a1e5752755f522d

SHA-1:
b8820b9526598b8402b22bb030f43b80f92108b2

SHA-256:
9b1382125b8634ceb8f6b5683c73290e45e798e5f287cbbc439605e3e205c5c9

Scanner detections:
7 / 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:
4/24/2024 4:49:06 AM UTC  (today)

Scan engine
Detection
Engine version

AhnLab V3 Security
Trojan/Win64.SwiftBrowse
2014.10.14

AVG
Wepor
2016.0.3096

Dr.Web
Trojan.BPlug.123
9.0.1.0148

F-Prot
W64/A-7883d091
v6.4.7.1.166

Reason Heuristics
PUP.Yontoo.Webporpoise
15.5.28.11

VIPRE Antivirus
Trojan.Win32.Generic
33880

Zillya! Antivirus
Adware.Yotoon.Win64.3
2.0.0.1953

File size:
59.7 KB (61,120 bytes)

Product version:
1.4.3.1

Copyright:
Copyright © 2013 StdLib

Original file name:
StdLib.sys

File type:
Driver (Win64 SYS)

Language:
English (United States)

Common path:
C:\Windows\System32\drivers\{646e947e-f0e6-4d0e-b21e-d62ca97183e2}w64.sys

Digital Signature
Signed by:
Webporpoise

Authority:
VeriSign, Inc.

Valid from:
3/14/2014 1:00:00 AM

Valid to:
3/15/2015 12:59:59 AM

Subject:
CN=Webporpoise, OU=Digital ID Class 3 - Microsoft Software Validation v2, O=Webporpoise, 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:
77E73438E8DB62CBB923965C646E769F

File PE Metadata
Compilation timestamp:
8/7/2014 1:52:18 AM

OS version:
6.1

OS bitness:
Win64

Subsystem:
Native (none required)

Linker version:
9.0

CTPH (ssdeep):
768:Kot2dxF9O8ZF33iqiIy9387Hp9XcfBzSowidIa0a:K9JRicy938Lp9eW1jBa

Entry address:
0xF064

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, 2E, 20, FF, FF, CC, CC, 38, F2, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 1C, F6, 00, 00, 60, C1, 00, 00, 28, F1, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, BE, F9, 00, 00, 50, C0, 00, 00, D8, F0, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, B6, FA, 00, 00, 00, C0, 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, 9A, FA, 00, 00, 00, 00, 00, 00, 86, FA, 00, 00...
 
[+]

Code size:
46.5 KB (47,616 bytes)

Driver
Display name:
{646e947e-f0e6-4d0e-b21e-d62ca97183e2}w64

Type:
Kernel device driver (KernelDriver)

Group:
PNP_TDI


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