{6a184198-5e72-4903-80bb-e80e3a740585}gt.sys

PortalMore

Part of the Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The file {6a184198-5e72-4903-80bb-e80e3a740585}gt.sys by PortalMore has been detected as adware by 13 anti-malware scanners. It runs as a Windows kernel mode device driver named “{6a184198-5e72-4903-80bb-e80e3a740585}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 PortalMore)

Product:
StdLib

Version:
1.4.3.1 built by: WinDDK

MD5:
b0aac9d6946e52849fc5d5b0bfff72fe

SHA-1:
5c44f8f61b3acf5470100d5e03f6116f1d82449e

SHA-256:
ed003ef1bb69b9a5d50c68180ff0a98f1a10a24078ae44019776159bee2ec803

Scanner detections:
13 / 68

Status:
Adware

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

Analysis date:
4/25/2024 10:12:00 PM UTC  (today)

Scan engine
Detection
Engine version

Agnitum Outpost
Riskware.Agent
7.1.1

Avira AntiVirus
Adware/BrowseFox.A.15
7.11.182.78

AVG
PortalMore
2015.0.3306

Baidu Antivirus
Adware.Win64.BrowseFox
4.0.3.141030

Clam AntiVirus
Win.Adware.Netfilter-130
0.98/21411

Dr.Web
Trojan.BPlug.123
9.0.1.05190

F-Prot
W32/A-09a5f424
v6.4.7.1.166

IKARUS anti.virus
PUA.RiskWare.NetFilter
t3scan.1.8.3.0

NANO AntiVirus
Riskware.Win32.NetFilter.dgqvkd
0.28.6.62995

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

Reason Heuristics
PUP.PortalMore.l
14.10.29.13

VIPRE Antivirus
Threat.4150696
34232

Zillya! Antivirus
Adware.Yotoon.Win64.10
2.0.0.1972

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\{6a184198-5e72-4903-80bb-e80e3a740585}gt.sys

Digital Signature
Signed by:

Authority:
VeriSign, Inc.

Valid from:
10/8/2014 1:00:00 AM

Valid to:
10/9/2015 12:59:59 AM

Subject:
CN=PortalMore, O=PortalMore, 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:
14DCC59945E4B46B41587E1F633D56C1

File PE Metadata
Compilation timestamp:
9/22/2014 8:01:43 PM

OS version:
6.1

OS bitness:
Win32

Subsystem:
Native (none required)

Linker version:
9.0

CTPH (ssdeep):
768:Ko6LohZZMITF7zKLV3fXoKKxaFtFkW4VIWPLqvH9EQZLN+p60CeUxO:Ko6+pT1UvYDEHFV4nPe/kpvCeCO

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...
 
[+]

Code size:
37 KB (37,888 bytes)

Driver
Display name:
{6a184198-5e72-4903-80bb-e80e3a740585}Gt

Type:
Kernel device driver (KernelDriver)

Group:
PNP_TDI


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