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{42e5d6be-c70e-4bea-b577-de4ecee47d9d}w64.sys

Spring Smart

Part of the Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The file {42e5d6be-c70e-4bea-b577-de4ecee47d9d}w64.sys by Spring Smart has been detected as adware by 28 anti-malware scanners. It runs as a Windows 64-bit kernel mode device driver named “{42e5d6be-c70e-4bea-b577-de4ecee47d9d}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 Spring Smart)

Product:
StdLib

Version:
1.4.4.6 built by: WinDDK

MD5:
f914af0bf26f758c6a6964d309dda979

SHA-1:
211bfa7f3753bb4f026d16df20d9f681a5da00d0

SHA-256:
8424b95bca7e6116e8def66bbb320dcf4bc557738104fa575d7de830866ced26

Scanner detections:
28 / 68

Status:
Adware

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

Analysis date:
4/26/2024 6:07:45 AM UTC  (today)

Scan engine
Detection
Engine version

Lavasoft Ad-Aware
Adware.SwiftBrowse.CH
366

Agnitum Outpost
Riskware.Agent
7.1.1

avast!
Win32:BrowseFox-GQ [PUP]
2014.9-160203

AVG
AdPlugin
2017.0.2844

Baidu Antivirus
Adware.Win32.BrowseFox
4.0.3.1623

Bitdefender
Adware.SwiftBrowse.CH
1.0.20.170

Bkav FE
W64.HfsAdware
1.3.0.7237

Clam AntiVirus
Win.Adware.Swiftbrowse-497
0.98/21511

Dr.Web
Trojan.Yontoo.1741
9.0.1.034

Emsisoft Anti-Malware
Adware.SwiftBrowse.CH
8.16.02.03.08

ESET NOD32
Win64/BrowseFox.CG potentially unwanted application
10.7.0.302.0

F-Prot
W64/A-59c9c70a
v6.4.7.1.166

F-Secure
Adware.SwiftBrowse.CH
11.2016-03-02_4

G Data
Adware.SwiftBrowse.CH
16.2.25

K7 AntiVirus
Adware
13.210.17264

Malwarebytes
PUP.Optional.SpringSmart
v2016.02.03.08

McAfee
Artemis!02D69E6426EC
5600.6500

MicroWorld eScan
Adware.SwiftBrowse.CH
17.0.0.102

NANO AntiVirus
Riskware.Win64.BPlug.dwtdyz
0.30.24.3283

Norman
Adware.SwiftBrowse.CH
11.20160203

nProtect
Adware.SwiftBrowse.CH
15.09.18.01

Reason Heuristics
PUP.Yontoo.SpringSmart (M)
16.2.3.20

Rising Antivirus
PE:Malware.Generic/QRS!1.9E2D[F1]
23.00.65.16201

SUPERAntiSpyware
Adware.BrowseFox/Variant
9345

Trend Micro House Call
TROJ_GEN.R08NC0OC615
7.2.34

Trend Micro
TROJ_GEN.R08NC0OGD15
10.465.03

VIPRE Antivirus
Trojan.Win32.Generic
43862

Zillya! Antivirus
Adware.Yotoon.Win64.14
2.0.0.2403

File size:
47.7 KB (48,832 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\{42e5d6be-c70e-4bea-b577-de4ecee47d9d}w64.sys

Digital Signature
Signed by:
Spring Smart

Authority:
VeriSign, Inc.

Valid from:
8/22/2013 9:00:00 AM

Valid to:
8/23/2015 8:59:59 AM

Subject:
CN=Spring Smart, OU=Digital ID Class 3 - Microsoft Software Validation v2, O=Spring Smart, 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:
5D69FD87A1BCECDB8891F45F148E34E2

File PE Metadata
Compilation timestamp:
12/2/2014 7:30:07 AM

OS version:
6.1

OS bitness:
Win64

Subsystem:
Native (none required)

Linker version:
9.0

CTPH (ssdeep):
768:lN7G2EjsnyXeOUEGG0LA8tWFZuL470h6aqxcCT2kvsVRwlZD3Jy:bFID6EGnLA8AFJTNEVmDY

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...
 
[+]

Code size:
34.5 KB (35,328 bytes)

Driver
Display name:
{42e5d6be-c70e-4bea-b577-de4ecee47d9d}w64

Type:
Kernel device driver (KernelDriver)

Group:
PNP_TDI


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