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{55685567-4840-4a91-962b-49a412e9485a}gt.sys

webget

Part of the Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The file {55685567-4840-4a91-962b-49a412e9485a}gt.sys by webget has been detected as adware by 21 anti-malware scanners. It runs as a Windows kernel mode device driver named “{55685567-4840-4a91-962b-49a412e9485a}Gt”. 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 webget)

Product:
StdLib

Version:
1.4.3.1 built by: WinDDK

MD5:
f12a8191f29458b1f6822c0e9c8db89b

SHA-1:
86516bbf32a30bfe8db30dcf97a3936e2fda7741

Scanner detections:
21 / 68

Status:
Adware

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

Analysis date:
4/27/2024 2:10:55 AM UTC  (today)

Scan engine
Detection
Engine version

Lavasoft Ad-Aware
Adware.SwiftBrowse.L
357

avast!
Win32:BrowseFox-F [PUP]
2014.9-160213

AVG
Webet
2017.0.2835

Baidu Antivirus
Adware.Win32.BrowseFox
4.0.3.16213

Bitdefender
Adware.SwiftBrowse.L
1.0.20.220

Comodo Security
UnclassifiedMalware
19599

Dr.Web
Trojan.BPlug.117
9.0.1.044

Emsisoft Anti-Malware
Adware.SwiftBrowse.L
8.16.02.13.12

ESET NOD32
Win32/RiskWare.NetFilter (variant)
10.10455

F-Secure
Adware.SwiftBrowse.L
11.2016-13-02_7

G Data
Adware.SwiftBrowse
16.2.24

IKARUS anti.virus
AdWare.SwiftBrowse
t3scan.1.6.1.0

McAfee
Artemis!5C0AFCCBC40F
5600.6491

MicroWorld eScan
Adware.SwiftBrowse.L
17.0.0.132

NANO AntiVirus
Trojan.Win32.BPlug.dcxxfx
0.28.2.62286

nProtect
Adware.SwiftBrowse.L
14.09.23.01

Reason Heuristics
PUP.Yontoo.webget (M)
16.2.13.0

Trend Micro House Call
TROJ_SPNV.03I914
7.2.44

Trend Micro
TROJ_SPNV.03I914
10.465.13

VIPRE Antivirus
Trojan.Win32.Generic
33378

Zillya! Antivirus
Adware.Yotoon.Win64.2
2.0.0.1930

File size:
53.9 KB (55,224 bytes)

Product version:
1.4.3.1

Copyright:
Copyright © 2013 StdLib

Original file name:
StdLib.sys

File type:
Driver (Win32 SYS)

Language:
English (United States)

Common path:
C:\Windows\System32\drivers\{55685567-4840-4a91-962b-49a412e9485a}gt.sys

Digital Signature
Signed by:
webget

Authority:
VeriSign, Inc.

Valid from:
4/22/2014 2:00:00 AM

Valid to:
4/23/2015 1:59:59 AM

Subject:
CN=webget, OU=Digital ID Class 3 - Microsoft Software Validation v2, O=webget, 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:
2DDF0A91A7D2108F978BEB26D4734BBA

File PE Metadata
Compilation timestamp:
1/31/2014 1:46:38 AM

OS version:
6.1

OS bitness:
Win32

Subsystem:
Native (none required)

Linker version:
9.0

CTPH (ssdeep):
768:VLbP7EDNtMTw/RWDjR/McKV5qEXGBJgxgZ+4AOmvtnBU6+RRoIdyof:ZP7EJSTukuzTrGYs+JNBUtR3xf

Entry address:
0xA73E

Entry point:
8B, FF, 55, 8B, EC, E8, BD, FF, FF, FF, 5D, E9, CA, E3, FF, FF, CC, CC, B4, A7, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 84, AB, 00, 00, 94, 90, 00, 00, A0, A7, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, BA, AB, 00, 00, 80, 90, 00, 00, AC, A7, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, D6, AB, 00, 00, 8C, 90, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, A6, AB, 00, 00, 92, AB, 00, 00, 00, 00, 00, 00, C2, AB, 00, 00, 00, 00, 00, 00, AC, A8, 00, 00, C4, A8, 00, 00, D6, A8...
 
[+]

Code size:
36.3 KB (37,120 bytes)

Driver
Display name:
{55685567-4840-4a91-962b-49a412e9485a}Gt

Type:
Kernel device driver (KernelDriver)

Group:
PNP_TDI


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