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{674829ea-f837-40f8-b8e1-613b1b2d47c8}gw.sys

Clock Hand

Part of the Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The file {674829ea-f837-40f8-b8e1-613b1b2d47c8}gw.sys by Clock Hand has been detected as adware by 26 anti-malware scanners. It runs as a Windows kernel mode device driver named “{674829ea-f837-40f8-b8e1-613b1b2d47c8}Gw”. 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 Clock Hand)

Product:
StdLib

Version:
1.4.4.6 built by: WinDDK

MD5:
d45d7e5732a16b7ce5e8ecb1d3c29f03

SHA-1:
246ad7b48da56aac3b5e112ef6001af98f3f104f

SHA-256:
71219b625e15b900b5729440c57cd0d3f3f7b7190ee94c368571a0ac73f15084

Scanner detections:
26 / 68

Status:
Adware

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

Analysis date:
4/24/2024 7:05:25 PM UTC  (today)

Scan engine
Detection
Engine version

Lavasoft Ad-Aware
Adware.BrowseFox.V
6210226

Agnitum Outpost
PUA.BrowseFox
7.1.1

Avira AntiVirus
ADWARE/BrowseFox.A.1227
3.6.1.96

avast!
MSIL:BrowseFox-BA [PUP]
150319-1

AVG
Generic
2016.0.3152

Baidu Antivirus
Hacktool.Win32.NetFilter
4.0.3.1541

Bitdefender
Adware.BrowseFox.V
1.0.20.455

Bkav FE
W32.HfsAdware
1.3.0.6379

Clam AntiVirus
Win.Adware.Netfilter-134
0.98/21511

Comodo Security
TrojWare.Win32.AltBrowse.IZZV
21613

Dr.Web
Trojan.Yontoo.1734
9.0.1.05190

Emsisoft Anti-Malware
Adware.BrowseFox.V
9.0.0.4799

ESET NOD32
Win32/NetFilter.A potentially unsafe application
7.0.302.0

F-Prot
W32/S-a7161e1c
v6.4.7.1.166

F-Secure
Adware.BrowseFox.V
5.13.68

G Data
Adware.BrowseFox
15.4.25

herdProtect (fuzzy)
variant of {3f382291-ecca-4a0e-875c-195a3b53133f}gw.sys (Adware)
2015.7.6.10

K7 AntiVirus
Unwanted-Program
13.202.15452

MicroWorld eScan
Adware.BrowseFox.V
16.0.0.273

Norman
Adware.BrowseFox.V
03.12.2014 13:20:04

nProtect
Adware.BrowseFox.V
15.04.01.01

Reason Heuristics
PUP.Yontoo
15.4.1.14

Sophos
Browse Fox
4.98

Vba32 AntiVirus
AdWare.Zaitu
3.12.26.3

VIPRE Antivirus
Threat.4150696
38882

Zillya! Antivirus
Backdoor.CPEX.Win32.29350
2.0.0.2123

File size:
42.1 KB (43,152 bytes)

Product version:
1.4.4.6

Copyright:
Copyright © 2013 StdLib

Original file name:
StdLib.sys

File type:
Driver (Win32 SYS)

Common path:
C:\Windows\System32\drivers\{674829ea-f837-40f8-b8e1-613b1b2d47c8}gw.sys

Digital Signature
Signed by:
Clock Hand

Authority:
VeriSign, Inc.

Valid from:
1/11/2015 2:00:00 AM

Valid to:
1/12/2016 1:59:59 AM

Subject:
CN=Clock Hand, O=Clock Hand, L=San Diego, 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:
456A42223C623741F26F18A9D4223E47

File PE Metadata
Compilation timestamp:
4/1/2015 3:28:18 AM

OS version:
6.1

OS bitness:
Win32

Subsystem:
Native (none required)

Linker version:
9.0

CTPH (ssdeep):
768:2N0457WBZwpHs63E+X7BIrTsCEziDH+JgrVJdduERMki:6hUcpH/0+LCf7EziDHhdfRMJ

Entry address:
0xA03E

Entry point:
8B, FF, 55, 8B, EC, E8, BD, FF, FF, FF, 5D, E9, 20, 70, FF, FF, CC, CC, 94, A1, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, CE, A4, 00, 00, E0, 80, 00, 00, B4, A0, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 24, A5, 00, 00, 00, 80, 00, 00, EC, A0, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, A4, A9, 00, 00, 38, 80, 00, 00, C4, A0, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 9C, AA, 00, 00, 10, 80, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, FC, A4, 00, 00, 10, A5, 00, 00, E8, A4...
 
[+]

Entropy:
6.6141

Code size:
28 KB (28,672 bytes)

Driver
Display name:
{674829ea-f837-40f8-b8e1-613b1b2d47c8}Gw

Type:
Kernel device driver (KernelDriver)

Group:
PNP_TDI


Remove {674829ea-f837-40f8-b8e1-613b1b2d47c8}gw.sys - Powered by Reason Core Security
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