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{31c21995-b861-4864-ab50-4a53fbca73d4}gt.sys

Rad Raven

Part of the Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The file {31c21995-b861-4864-ab50-4a53fbca73d4}gt.sys by Rad Raven has been detected as adware by 29 anti-malware scanners. It runs as a Windows kernel mode device driver named “{31c21995-b861-4864-ab50-4a53fbca73d4}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 Rad Raven)

Product:
StdLib

Version:
1.4.3.1 built by: WinDDK

MD5:
2f9f1160f837ec12cfb48985bc853c57

SHA-1:
dfaa65f641f247dc460ce6537c6755cfc783c694

SHA-256:
eebb5d032ed1d2e83cbd80c315f8ee907aba509cd02d463449842ad3e68d30c9

Scanner detections:
29 / 68

Status:
Adware

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

Analysis date:
4/19/2024 5:03:49 AM UTC  (today)

Scan engine
Detection
Engine version

Lavasoft Ad-Aware
Adware.NetFilter.J
618

Agnitum Outpost
Riskware.Agent
7.1.1

AhnLab V3 Security
PUP/Win32.BrowseFox
2015.03.26

Avira AntiVirus
ADWARE/BrowseFox.A.28
8.3.1.6

AVG
Generic
2016.0.3096

Baidu Antivirus
Adware.Win32.BrowseFox
4.0.3.15527

Bitdefender
Adware.NetFilter.J
1.0.20.735

Bkav FE
W32.HfsAdware
1.3.0.6379

Clam AntiVirus
Win.Adware.Netfilter-130
0.98/20507

Comodo Security
TrojWare.Win32.AltBrowse.IZZV
21011

Dr.Web
Trojan.Yontoo.1734
9.0.1.05190

Emsisoft Anti-Malware
Adware.NetFilter
8.15.05.27.01

ESET NOD32
Win32/NetFilter.A potentially unsafe application
7.0.302.0

F-Prot
W32/A-b3b70cb0
v6.4.7.1.166

F-Secure
Adware.NetFilter.J
11.2015-27-05_4

G Data
Adware.NetFilter
15.5.25

Kaspersky
not-a-virus:RiskTool.Win32.NetFilter
14.0.0.1977

Malwarebytes
PUP.Optional.BrowseFox.C
v2015.05.27.01

McAfee
Artemis!9D5CFEB99AAE
5600.6752

MicroWorld eScan
Adware.NetFilter.J
16.0.0.441

NANO AntiVirus
Riskware.Win32.NetFilter.dgqvkd
0.30.0.65070

Norman
Adware.NetFilter.J
03.12.2014 13:20:04

nProtect
Adware.NetFilter.J
15.02.06.01

Qihoo 360 Security
HEUR/QVM00.1.Malware.Gen
1.0.0.1015

Reason Heuristics
PUP.Yontoo.RadRaven
15.5.27.13

Trend Micro House Call
Suspicious_GEN.F47V0204
7.2.147

Vba32 AntiVirus
AdWare.Yotoon
3.12.26.4

VIPRE Antivirus
Trojan.Win32.Generic
37376

Zillya! Antivirus
Adware.Yotoon.Win64.10
2.0.0.2058

File size:
54.5 KB (55,824 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\{31c21995-b861-4864-ab50-4a53fbca73d4}gt.sys

Digital Signature
Signed by:
Rad Raven

Authority:
VeriSign, Inc.

Valid from:
10/13/2014 8:00:00 PM

Valid to:
10/14/2015 7:59:59 PM

Subject:
CN=Rad Raven, O=Rad Raven, 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:
0B7DB63EF6FF035D8353EEF132DC2226

File PE Metadata
Compilation timestamp:
3/26/2015 11:04:20 AM

OS version:
6.1

OS bitness:
Win32

Subsystem:
Native (none required)

Linker version:
9.0

CTPH (ssdeep):
768:qo6LohZZMITF7zKLV3fXoKKxaFtFkW4VIWPLqvH9EQZLN+p60CeeF1yz:qo6+pT1UvYDEHFV4nPe/kpvCePz

Entry address:
0xA9BE

Entry point:
8B, FF, 55, 8B, EC, E8, BD, FF, FF, FF, 5D, E9, 2A, E4, FF, FF, CC, CC, 34, AA, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 04, AE, 00, 00, 94, 93, 00, 00, 20, AA, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 3A, AE, 00, 00, 80, 93, 00, 00, 2C, AA, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 56, AE, 00, 00, 8C, 93, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 26, AE, 00, 00, 12, AE, 00, 00, 00, 00, 00, 00, 42, AE, 00, 00, 00, 00, 00, 00, 2C, AB, 00, 00, 44, AB, 00, 00, 56, AB...
 
[+]

Entropy:
6.3454

Code size:
37 KB (37,888 bytes)

Driver
Display name:
{31c21995-b861-4864-ab50-4a53fbca73d4}Gt

Type:
Kernel device driver (KernelDriver)

Group:
PNP_TDI


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