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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 12 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:
4daf5a566fdc2754b876735330002e5f

SHA-1:
151e8846848d006625c895d329fa76b9a79cfbaa

SHA-256:
e961de8d5f9d4c80152a165e63b4361ed55e56e8af9fc12f75a4f3a4156be7eb

Scanner detections:
12 / 68

Status:
Adware

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

Analysis date:
4/28/2024 9:25:40 PM UTC  (today)

Scan engine
Detection
Engine version

Lavasoft Ad-Aware
Adware.SwiftBrowse.L
970

AVG
Webet
2015.0.3448

Baidu Antivirus
Adware.Win32.BrowseFox
4.0.3.14610

Bitdefender
Adware.SwiftBrowse.L
1.0.20.805

Emsisoft Anti-Malware
Adware.SwiftBrowse.L
8.14.06.10.05

F-Secure
Adware.SwiftBrowse.L
11.2014-10-06_3

G Data
Adware.SwiftBrowse
14.6.24

IKARUS anti.virus
AdWare.SwiftBrowse
t3scan.1.6.1.0

MicroWorld eScan
Adware.SwiftBrowse.L
15.0.0.483

nProtect
Adware.SwiftBrowse.L
14.06.09.01

Reason Heuristics
PUP.webget.l
14.6.10.4

VIPRE Antivirus
Threat.4150696
30086

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 2:46:38 AM

OS version:
6.1

OS bitness:
Win32

Subsystem:
Native (none required)

Linker version:
9.0

CTPH (ssdeep):
768:VKbP7EDNtMTw/RWDjR/McKV5qEXGBJgxgZ+4AOmvtnBU6+RRoIdyoj74:YP7EJSTukuzTrGYs+JNBUtR3xj74

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...
 
[+]

Entropy:
6.3483

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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