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{2c976a7f-dbdc-4756-870f-f6d183fe7a7e}gt.sys

WiseEnhance

Part of the Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The file {2c976a7f-dbdc-4756-870f-f6d183fe7a7e}gt.sys by WiseEnhance has been detected as adware by 11 anti-malware scanners. It runs as a Windows kernel mode device driver named “{2c976a7f-dbdc-4756-870f-f6d183fe7a7e}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 WiseEnhance)

Product:
StdLib

Version:
1.4.3.1 built by: WinDDK

MD5:
d59476928b96398dc33c12cbb73cd3d2

SHA-1:
14f49fe41a34512db27e12ac8c6bd4c8de48d659

Scanner detections:
11 / 68

Status:
Adware

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

Analysis date:
5/10/2024 12:42:38 PM UTC  (today)

Scan engine
Detection
Engine version

AVG
Wihance
2017.0.2833

Baidu Antivirus
Adware.Win32.BrowseFox
4.0.3.16214

Dr.Web
Trojan.BPlug.117
9.0.1.045

ESET NOD32
Win64/BrowseFox.AI (variant)
10.10656

F-Prot
W32/A-dd00b781
v6.4.7.1.166

IKARUS anti.virus
AdWare.SwiftBrowse
t3scan.1.6.1.0

NANO AntiVirus
Trojan.Win32.BPlug.dcxxfx
0.28.6.62995

Reason Heuristics
PUP.Yontoo.WiseEnhance (M)
16.2.14.19

Vba32 AntiVirus
AdWare.Yotoon
3.12.26.3

VIPRE Antivirus
Trojan.Win32.Generic
34444

Zillya! Antivirus
Adware.Yotoon.Win64.2
2.0.0.1974

File size:
53.9 KB (55,232 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\{2c976a7f-dbdc-4756-870f-f6d183fe7a7e}gt.sys

Digital Signature
Signed by:
WiseEnhance

Authority:
VeriSign, Inc.

Valid from:
1/9/2014 1:00:00 AM

Valid to:
1/10/2015 12:59:59 AM

Subject:
CN=WiseEnhance, OU=Digital ID Class 3 - Microsoft Software Validation v2, O=WiseEnhance, 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:
31A5491EFDDBA1099808F5647A45617E

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:VxbP7EDNtMTw/RWDjR/McKV5qEXGBJgxgZ+4AOmvtnBU6+RRIf:zP7EJSTukuzTrGYs+JNBUtR6

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:
{2c976a7f-dbdc-4756-870f-f6d183fe7a7e}Gt

Type:
Kernel device driver (KernelDriver)

Group:
PNP_TDI


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