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{6fcd6092-9615-4f7f-8898-8df53980e5d2}gw64.sys

NetCrawl

Part of the Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The file {6fcd6092-9615-4f7f-8898-8df53980e5d2}gw64.sys by NetCrawl has been detected as adware by 28 anti-malware scanners. It runs as a Windows 64-bit kernel mode device driver named “{6fcd6092-9615-4f7f-8898-8df53980e5d2}Gw64”. 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 NetCrawl)

Product:
StdLib

Version:
1.4.3.1 built by: WinDDK

MD5:
a24c79b78a36edafed8d401c52a9a049

SHA-1:
b29cffb0d36f795552c579539c4e1a3319cea3c0

SHA-256:
c8355c425dc31d3b304053a756d9aa153a3c44563885c90ad82a1136fc9a8b63

Scanner detections:
28 / 68

Status:
Adware

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

Analysis date:
4/25/2024 6:43:32 AM UTC  (today)

Scan engine
Detection
Engine version

Lavasoft Ad-Aware
Adware.SwiftBrowse.L
867

Agnitum Outpost
Trojan.BPlug
7.1.1

AhnLab V3 Security
Trojan/Win64.SwiftBrowse
2014.09.21

avast!
Win64:Malware-gen
2014.9-140920

AVG
NetCrawl
2015.0.3345

Baidu Antivirus
Adware.Win32.BrowseFox
4.0.3.14920

Bitdefender
Adware.SwiftBrowse.L
1.0.20.1315

Clam AntiVirus
Win.Adware.Swiftbrowse-75
0.98/19411

Comodo Security
UnclassifiedMalware
18740

Dr.Web
Trojan.BPlug.123
9.0.1.05190

Emsisoft Anti-Malware
Adware.SwiftBrowse.L
8.14.09.20.09

ESET NOD32
Win64/Riskware.NetFilter.F application
7.0.302.0

F-Prot
W64/A-a8e2f748
v6.4.7.1.166

F-Secure
Adware.SwiftBrowse.L
11.2014-20-09_7

G Data
Adware.SwiftBrowse
14.9.24

herdProtect (fuzzy)
variant of {6fcd6092-9615-4f7f-8898-8df53980e5d2}w64.sys (Adware)
2014.12.3.10

IKARUS anti.virus
AdWare.SpadeCast
t3scan.1.6.1.0

Malwarebytes
PUP.Optional.NetFilter
v2014.09.20.09

McAfee
Artemis!D2890F009BF4
5600.7001

MicroWorld eScan
Adware.SwiftBrowse.L
15.0.0.789

nProtect
Adware.SwiftBrowse.L
14.05.23.01

Panda Antivirus
Adware/BrowserFox
14.09.20.09

Qihoo 360 Security
Win32/Trojan.RiskWare.a25
1.0.0.1015

Reason Heuristics
PUP.NetCrawl.n
14.9.20.21

Sophos
BrowseSmart
4.98

Trend Micro House Call
Suspicious_GEN.F47V0701
7.2.263

VIPRE Antivirus
Trojan.Win32.Generic
31218

Zillya! Antivirus
Adware.Yotoon.Win64.3
2.0.0.1928

File size:
59.7 KB (61,112 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\{6fcd6092-9615-4f7f-8898-8df53980e5d2}gw64.sys

Digital Signature
Signed by:
NetCrawl

Authority:
VeriSign, Inc.

Valid from:
4/28/2014 7:00:00 PM

Valid to:
4/29/2015 6:59:59 PM

Subject:
CN=NetCrawl, OU=Digital ID Class 3 - Microsoft Software Validation v2, O=NetCrawl, 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:
3C05F8D25EB72CD5B6EB863AA0585F70

File PE Metadata
Compilation timestamp:
1/30/2014 6:45:30 PM

OS version:
6.1

OS bitness:
Win64

Subsystem:
Native (none required)

Linker version:
9.0

CTPH (ssdeep):
768:sot2dxF9O8ZF33iqiIy938bWp9XcfBvJkowidIvN:s9JRicy938ip9ea1jF

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...
 
[+]

Entropy:
5.9642

Code size:
46.5 KB (47,616 bytes)

Driver
Display name:
{6fcd6092-9615-4f7f-8898-8df53980e5d2}Gw64

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.