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{25d71abf-7776-46f5-a269-9951331f9030}w64.sys

linkswift

Part of the Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The file {25d71abf-7776-46f5-a269-9951331f9030}w64.sys by linkswift has been detected as adware by 28 anti-malware scanners. It runs as a Windows 64-bit kernel mode device driver named “{25d71abf-7776-46f5-a269-9951331f9030}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 linkswift)

Product:
StdLib

Version:
1.4.3.1 built by: WinDDK

MD5:
034d0b359f7b38a7be8832ee00bddee6

SHA-1:
fefa4d77515da3f0466c2b6049674bccf90d9e00

SHA-256:
df53ef256def19d0524c6b9973f6b6e398ccb8749cacd349dbf8dc3985ade65f

Scanner detections:
28 / 68

Status:
Adware

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

Analysis date:
5/8/2024 4:48:36 PM UTC  (today)

Scan engine
Detection
Engine version

Lavasoft Ad-Aware
Adware.NetFilter.E
355

Agnitum Outpost
Trojan.BPlug
7.1.1

AhnLab V3 Security
Trojan/Win64.SwiftBrowse
2014.11.12

Avira AntiVirus
Adware/BrowseFox.api
7.11.193.68

avast!
Win32:BrowseFox-H [PUP]
2014.9-160214

AVG
Generic
2017.0.2833

Baidu Antivirus
Trojan.Win64.Riskware.BNetFilter
4.0.3.16214

Bitdefender
Adware.NetFilter.E
1.0.20.225

Clam AntiVirus
Win.Adware.Swiftbrowse-75
0.98/21411

Dr.Web
Trojan.BPlug.123
9.0.1.045

Emsisoft Anti-Malware
Adware.NetFilter
8.16.02.14.05

ESET NOD32
Win64/Riskware.NetFilter (variant)
10.10708

F-Prot
W64/A-e967bae2
v6.4.7.1.166

F-Secure
Adware.NetFilter.E
11.2016-14-02_1

G Data
Adware.NetFilter
16.2.24

IKARUS anti.virus
AdWare.SpadeCast
t3scan.1.6.1.0

K7 AntiVirus
Riskware
13.185.13980

McAfee
Artemis!D2D9DB0A2CD9
5600.6489

MicroWorld eScan
Adware.NetFilter.E
17.0.0.135

Norman
Adware.SwiftBrowse.CH
11.20160214

nProtect
Adware.NetFilter.E
14.11.11.01

Panda Antivirus
Trj/CI.A
16.02.14.05

Reason Heuristics
PUP.Yontoo.linkswift (M)
16.2.14.17

Sophos
BrowseSmart
4.98

Trend Micro House Call
TROJ_GEN.R0C1C0OK314
7.2.45

Trend Micro
TROJ_GEN.R0C1C0OK314
10.465.14

VIPRE Antivirus
Trojan.Win32.Generic
31388

Zillya! Antivirus
Adware.Yotoon.Win64.3
2.0.0.1981

File size:
43.7 KB (44,728 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\{25d71abf-7776-46f5-a269-9951331f9030}w64.sys

Digital Signature
Signed by:
linkswift

Authority:
VeriSign, Inc.

Valid from:
8/12/2013 5:00:00 AM

Valid to:
8/13/2015 4:59:59 AM

Subject:
CN=linkswift, OU=Digital ID Class 3 - Microsoft Software Validation v2, O=linkswift, 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:
3AD03D814D9E16358271D2CA8A94AB42

File PE Metadata
Compilation timestamp:
9/13/2014 4:33:02 AM

OS version:
6.1

OS bitness:
Win64

Subsystem:
Native (none required)

Linker version:
9.0

CTPH (ssdeep):
768:YgLmaZF8aSQ7DwZmEhzg8ClFHeDrTdRfsQCa5075YLwidHAqv:j5ZEQI8E7ClquaC759EJv

Entry address:
0xB064

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, C6, 60, FF, FF, CC, CC, 38, B2, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 1C, B6, 00, 00, 60, 81, 00, 00, 28, B1, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, BE, B9, 00, 00, 50, 80, 00, 00, D8, B0, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, B6, BA, 00, 00, 00, 80, 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, BA, 00, 00, 00, 00, 00, 00, 86, BA, 00, 00...
 
[+]

Entropy:
6.3761

Code size:
30.5 KB (31,232 bytes)

Driver
Display name:
{25d71abf-7776-46f5-a269-9951331f9030}w64

Type:
Kernel device driver (KernelDriver)

Group:
PNP_TDI


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