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{466a6735-5550-4bc0-aa2d-4a38b7bf7287}w.sys

ConstaSurf

Part of the Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The file {466a6735-5550-4bc0-aa2d-4a38b7bf7287}w.sys by ConstaSurf has been detected as adware by 29 anti-malware scanners. It runs as a Windows kernel mode device driver named “{466a6735-5550-4bc0-aa2d-4a38b7bf7287}w”. 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 ConstaSurf)

Product:
StdLib

Version:
1.4.4.6 built by: WinDDK

MD5:
df7f7b66e97abdc8f64cc645f6e43f99

SHA-1:
f24888369e8824736c6a88ccf7648b6581f445b9

SHA-256:
28647b714eba4aa75410f2ab74e5626e58540553914c85a73511700fdf76f523

Scanner detections:
29 / 68

Status:
Adware

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

Analysis date:
4/25/2024 4:22:39 AM UTC  (today)

Scan engine
Detection
Engine version

Lavasoft Ad-Aware
Adware.SwiftBrowse.N
355

Agnitum Outpost
PUA.BrowseFox
7.1.1

AhnLab V3 Security
Win-PUP/BrowseFox.Gen
2015.03.16

Avira AntiVirus
Adware/BrowseFox.A.1227
7.11.217.124

avast!
Win32:BrowseFox-AC [PUP]
2014.9-160215

AVG
Consurf
2017.0.2833

Baidu Antivirus
Adware.Win64.BrowseFox
4.0.3.16215

Bitdefender
Adware.SwiftBrowse.N
1.0.20.230

Bkav FE
W32.HfsAdware
1.3.0.6379

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

Comodo Security
TrojWare.Win32.AltBrowse.IZZV
21424

Emsisoft Anti-Malware
Adware.SwiftBrowse.N
8.16.02.15.12

ESET NOD32
Win64/BrowseFox.BV potentially unwanted application
10.7.0.302.0

Fortinet FortiGate
Adware/BrowseFox
2/15/2016

F-Prot
W32/A-76f53fd6
v6.4.7.1.166

F-Secure
Adware.SwiftBrowse.N
11.2016-15-02_2

G Data
Adware.SwiftBrowse
16.2.25

K7 AntiVirus
Unwanted-Program
13.200.15263

McAfee
Artemis!79C6AFA5D552
5600.6489

MicroWorld eScan
Adware.SwiftBrowse.N
17.0.0.138

NANO AntiVirus
Riskware.Win32.NetFilter.dgkdox
0.30.0.65070

Norman
Adware.SwiftBrowse.N
11.20160215

nProtect
Adware.SwiftBrowse.N
15.03.13.01

Qihoo 360 Security
Win32/Virus.Adware.618
1.0.0.1015

Reason Heuristics
PUP.Yontoo.ConstaSurf (M)
16.2.15.0

Sophos
PUA 'Browse Fox'
5.11

Vba32 AntiVirus
AdWare.Zaitu
3.12.26.3

VIPRE Antivirus
Threat.4150696
37788

Zillya! Antivirus
Backdoor.CPEX.Win32.29350
2.0.0.2100

File size:
42.2 KB (43,200 bytes)

Product version:
1.4.4.6

Copyright:
Copyright © 2013 StdLib

Original file name:
StdLib.sys

File type:
Driver (Win32 SYS)

Language:
English (United States)

Common path:
C:\Windows\System32\drivers\{466a6735-5550-4bc0-aa2d-4a38b7bf7287}w.sys

Digital Signature
Signed by:
ConstaSurf

Authority:
VeriSign, Inc.

Valid from:
3/18/2014 8:00:00 PM

Valid to:
3/19/2015 7:59:59 PM

Subject:
CN=ConstaSurf, OU=Digital ID Class 3 - Microsoft Software Validation v2, O=ConstaSurf, 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:
46A82C62F93896A2C29C94EC6C4D8A3D

File PE Metadata
Compilation timestamp:
1/2/2015 2:30:34 PM

OS version:
6.1

OS bitness:
Win32

Subsystem:
Native (none required)

Linker version:
9.0

CTPH (ssdeep):
768:jN0457WBZwpHs63E+X7BIrTsCEziDH+JgrVJddHM2S:phUcpH/0+LCf7EziDHhdtZS

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:
6.6142

Code size:
28 KB (28,672 bytes)

Driver
Display name:
{466a6735-5550-4bc0-aa2d-4a38b7bf7287}w

Type:
Kernel device driver (KernelDriver)

Group:
PNP_TDI


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