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{d1bdfa01-5a9a-448b-bb7a-b6dc6b34803d}gt.sys

Hatchiho

Part of the Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The file {d1bdfa01-5a9a-448b-bb7a-b6dc6b34803d}gt.sys by Hatchiho has been detected as adware by 21 anti-malware scanners. It runs as a Windows kernel mode device driver named “{d1bdfa01-5a9a-448b-bb7a-b6dc6b34803d}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 Hatchiho)

Product:
StdLib

Version:
1.4.3.1 built by: WinDDK

MD5:
9a090f3f40b18770934940e089f1db2f

SHA-1:
7e8029f2983526e78b69a2934d229db3da2887bb

SHA-256:
f29d6c110176d98c3595cef56b8902aa8542d153ef8adfbb3a990524c00eeb74

Scanner detections:
21 / 68

Status:
Adware

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

Analysis date:
4/26/2024 1:43:55 PM UTC  (today)

Scan engine
Detection
Engine version

Lavasoft Ad-Aware
Adware.NetFilter.J
571

Agnitum Outpost
Riskware.Agent
7.1.1

AVG
BrowseFox
2016.0.3143

Bitdefender
Adware.NetFilter.J
1.0.20.970

Bkav FE
W32.HfsAdware
1.3.0.6379

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

Comodo Security
TrojWare.Win32.AltBrowse.IZZV
21719

Dr.Web
Trojan.BPlug.123
9.0.1.0194

Emsisoft Anti-Malware
Adware.NetFilter
8.15.07.13.12

ESET NOD32
Win32/NetFilter.A potentially unsafe application
7.0.302.0

F-Prot
W32/A-b3b70cb0
v6.4.7.1.166

herdProtect (fuzzy)
variant of {6db7eb66-a30b-41a3-809c-addb2341dafb}gt.sys (Adware)
2015.7.13.12

Kaspersky
not-a-virus:RiskTool.Win32.NetFilter
15.0.0.543

McAfee
Artemis!42B78E318FF4
5600.6705

NANO AntiVirus
Riskware.Win32.NetFilter.dgqvkd
0.28.6.62995

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

nProtect
Adware.NetFilter.J
14.11.06.01

Reason Heuristics
Threat.Yontoo.Hatchiho
15.4.11.23

Vba32 AntiVirus
AdWare.Yotoon
3.12.26.3

VIPRE Antivirus
Threat.4150696
34232

Zillya! Antivirus
Adware.Yotoon.Win64.10
2.0.0.1976

File size:
54.5 KB (55,816 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\{d1bdfa01-5a9a-448b-bb7a-b6dc6b34803d}gt.sys

Digital Signature
Signed by:
Hatchiho

Authority:
VeriSign, Inc.

Valid from:
11/3/2014 7:00:00 PM

Valid to:
1/3/2016 6:59:59 PM

Subject:
CN=Hatchiho, O=Hatchiho, 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:
18C541759E913EC1CBDA43C13830E0B3

File PE Metadata
Compilation timestamp:
4/10/2015 8:28:47 AM

OS version:
6.1

OS bitness:
Win32

Subsystem:
Native (none required)

Linker version:
9.0

CTPH (ssdeep):
768:No6LohZZMITF7zKLV3fXoKKxaFtFkW4VIWPLqvH9EQZLN+p60CeXP:No6+pT1UvYDEHFV4nPe/kpvCe/

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:
6.3452

Code size:
37 KB (37,888 bytes)

Driver
Display name:
{d1bdfa01-5a9a-448b-bb7a-b6dc6b34803d}Gt

Type:
Kernel device driver (KernelDriver)

Group:
PNP_TDI


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