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{6cfec6a5-9d93-4492-985a-470a68eff4e9}w64.sys

ClearThink

Part of the Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The file {6cfec6a5-9d93-4492-985a-470a68eff4e9}w64.sys by ClearThink has been detected as adware by 28 anti-malware scanners. It runs as a Windows 64-bit kernel mode device driver named “{6cfec6a5-9d93-4492-985a-470a68eff4e9}w64”. It will plug into the web browser and display context-based advertisements by overwriting existing ads or by inserting new ones on various web pages.
Publisher:
StdLib  (signed by ClearThink)

Product:
StdLib

Version:
1.4.4.6 built by: WinDDK

MD5:
6c046b2b0a6a84f9995f2b18d394bdb3

SHA-1:
57dbe0a5063a1c2455677881db45a6ca0eee618b

SHA-256:
dc256314c61a3dc36dee15971386a8d0eb2e7ad00cdde323a3517fddf4f8ee42

Scanner detections:
28 / 68

Status:
Adware

Explanation:
Injects advertising in the web browser in various formats.

Analysis date:
4/19/2024 4:17:28 PM UTC  (today)

Scan engine
Detection
Engine version

Lavasoft Ad-Aware
Adware.SwiftBrowse.CH
657

Agnitum Outpost
Riskware.Agent
7.1.1

AhnLab V3 Security
Win-PUP/BrowseFox.Gen
2015.03.03

avast!
Win32:BrowseFox-ET [PUP]
150414-0

AVG
Generic
2016.0.3135

Baidu Antivirus
Adware.Win64.BrowseFox
4.0.3.15419

Bitdefender
Adware.SwiftBrowse.CH
1.0.20.545

Clam AntiVirus
Win.Adware.Swiftbrowse-497
0.98/21411

Dr.Web
Tool.NetFilter.313
9.0.1.0109

Emsisoft Anti-Malware
Adware.SwiftBrowse.CH
8.15.04.19.06

ESET NOD32
Win64/NetFilter.A potentially unsafe application
7.0.302.0

Fortinet FortiGate
Adware/BrowseFox
4/19/2015

F-Prot
W64/A-6238163f
v6.4.7.1.166

F-Secure
Adware.SwiftBrowse.CH
11.2015-19-04_1

G Data
Adware.SwiftBrowse.CH
15.4.24

herdProtect (fuzzy)
variant of {b0c51d23-966e-4986-81ac-a04859acb990}gw64.sys (Adware)
2015.7.20.19

K7 AntiVirus
Adware
13.1915124

McAfee
Trojan.Artemis!6C046B2B0A6A
16.8.708.2

MicroWorld eScan
Adware.SwiftBrowse.CH
16.0.0.327

NANO AntiVirus
Riskware.Win64.NetFilter.dhjlsc
0.28.6.62995

Norman
Adware.SwiftBrowse.CH
03.12.2014 13:20:04

nProtect
Adware.SwiftBrowse.CH
14.10.19.01

Reason Heuristics
PUP.Yontoo.ClearThink
15.4.19.6

Rising Antivirus
PE:Trojan.Win32.Generic.178E3617!395195927
23.00.65.15417

Trend Micro House Call
HS_BROWSEFOX.SM
7.2.109

Trend Micro
HS_BROWSEFOX.SM
10.465.19

VIPRE Antivirus
Trojan.Win32.Generic
34078

Zillya! Antivirus
Adware.Yotoon.Win64.14
2.0.0.1974

File size:
47.6 KB (48,784 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\{6cfec6a5-9d93-4492-985a-470a68eff4e9}w64.sys

Digital Signature
Signed by:
ClearThink

Authority:
VeriSign, Inc.

Valid from:
10/9/2014 8:00:00 AM

Valid to:
8/6/2015 7:59:59 AM

Subject:
CN=ClearThink, O=ClearThink, 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:
59B72B1DB71CE323997B1EAF80E12AAE

File PE Metadata
Compilation timestamp:
9/23/2014 3:01:54 AM

OS version:
6.1

OS bitness:
Win64

Subsystem:
Native (none required)

Linker version:
9.0

CTPH (ssdeep):
768:lp7G2EjsnyXeOUEGG0LA8tWFZuL470h6aqxcCT2kvsVRwlZD3UYN:XFID6EGnLA8AFJTNEVmDUO

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:
6.3933

Code size:
34.5 KB (35,328 bytes)

Driver
Display name:
{6cfec6a5-9d93-4492-985a-470a68eff4e9}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.