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{a88c5367-7ba7-4188-92bf-b63ed9a9e22e}w64.sys

Spring Smart

Part of the Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The file {a88c5367-7ba7-4188-92bf-b63ed9a9e22e}w64.sys by Spring Smart has been detected as adware by 27 anti-malware scanners. It runs as a Windows 64-bit kernel mode device driver named “{a88c5367-7ba7-4188-92bf-b63ed9a9e22e}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:
1.4.3.1 built by: WinDDK

MD5:
b161cc29d1d5ab37cb6498359dfd6254

SHA-1:
237b2e19a716909ff6eb9fe782fb1dd32e60898e

SHA-256:
d154b52da2ed2ad67027852d358fc869f938759c092c3dc4b273c0b87c45fe83

Scanner detections:
27 / 68

Status:
Adware

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

Analysis date:
4/25/2024 2:17:56 PM UTC  (today)

Scan engine
Detection
Engine version

Lavasoft Ad-Aware
Adware.SwiftBrowse.CH
368

Agnitum Outpost
Trojan.BPlug
7.1.1

AhnLab V3 Security
Trojan/Win64.SwiftBrowse
2015.01.13

avast!
Win32:BrowseFox-GQ [PUP]
2014.9-160202

AVG
Spmart
2017.0.2846

Baidu Antivirus
Adware.Win32.BrowseFox
4.0.3.1622

Bitdefender
Adware.NetFilter.E
1.0.20.165

Bkav FE
W64.HfsAdware
1.3.0.6379

Clam AntiVirus
Win.Adware.Swiftbrowse-75
0.98/19912

Dr.Web
Trojan.Yontoo.1741
9.0.1.033

Emsisoft Anti-Malware
Adware.SwiftBrowse.CH
8.16.02.02.08

F-Prot
W64/A-e967bae2
v6.4.7.1.166

F-Secure
Adware.SwiftBrowse.CH
11.2016-02-02_3

G Data
Adware.NetFilter
16.2.24

IKARUS anti.virus
AdWare.SpadeCast
t3scan.1.6.1.0

K7 AntiVirus
Adware
13.202.15582

McAfee
Artemis!C22D6E7BC28E
5600.6502

MicroWorld eScan
Adware.NetFilter.E
17.0.0.99

Norman
Adware.SwiftBrowse.CH
11.20160202

nProtect
Adware.NetFilter.E
15.01.12.01

Reason Heuristics
PUP.Yontoo.SpringSmart (M)
16.2.2.8

Sophos
PUA 'BrowseSmart' (of type Adware)
59

SUPERAntiSpyware
Adware.BrowseFox/Variant
9348

Trend Micro House Call
TROJ_GEN.F47V0527
7.2.33

Trend Micro
HS_BROWSEFOX.SM
10.465.02

VIPRE Antivirus
Threat.4150696
36504

Zillya! Antivirus
Adware.Yotoon.Win64.3
2.0.0.2033

File size:
59.7 KB (61,120 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\{a88c5367-7ba7-4188-92bf-b63ed9a9e22e}w64.sys

Digital Signature
Signed by:
Spring Smart

Authority:
VeriSign, Inc.

Valid from:
8/21/2013 6:00:00 PM

Valid to:
8/22/2015 5:59:59 PM

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:
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:Dot2dxF9O8ZF33iqiIy938bWp9XcfBvJkowidIHH:D9JRicy938ip9ea1jn

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:
5.9650

Code size:
46.5 KB (47,616 bytes)

Driver
Display name:
{a88c5367-7ba7-4188-92bf-b63ed9a9e22e}w64

Type:
Kernel device driver (KernelDriver)

Group:
PNP_TDI


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