home

{df47b99d-26f5-45f4-85c5-97b4da365f21}gt64.sys

Hold Page

Part of the Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The file {df47b99d-26f5-45f4-85c5-97b4da365f21}gt64.sys by Hold Page has been detected as adware by 1 anti-malware scanner with very strong indications that the file is a potential threat. It runs as a Windows 64-bit kernel mode device driver named “{df47b99d-26f5-45f4-85c5-97b4da365f21}Gt64”.
Publisher:
StdLib  (signed by Hold Page)

Product:
StdLib

Version:
1.4.3.1 built by: WinDDK

MD5:
549e10b9c0063d673bd5703615e6ba82

SHA-1:
1927dc893b2df903924526470b90c656be50742c

SHA-256:
35ebebc34df9a8ec6f002e4b6ab8c09ce92c1bc23abc9cffe0390d79430cb84e

Scanner detections:
1 / 68

Status:
Adware

Explanation:
Belongs to the Sambreel/Yontoo progam that inserts various forms of advertising in the user's web browser, installed with minimal or no user consent.

Analysis date:
5/9/2024 7:09:39 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Yontoo (M)
16.10.27.11

File size:
59.6 KB (61,064 bytes)

Product version:
1.4.3.1

Copyright:
Copyright © 2013 StdLib

Original file name:
StdLib.sys

File type:
Driver (Win64 SYS)

Language:
English (United States)

Common path:
C:\Windows\System32\drivers\{df47b99d-26f5-45f4-85c5-97b4da365f21}gt64.sys

Digital Signature
Signed by:
Hold Page

Authority:
VeriSign, Inc.

Valid from:
9/1/2014 7:00:00 PM

Valid to:
9/2/2015 6:59:59 PM

Subject:
CN=Hold Page, O=Hold Page, 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:
5097461A9471FDD2B020491B464CDCD9

File PE Metadata
Compilation timestamp:
12/2/2014 5:58:16 AM

OS version:
6.1

OS bitness:
Win64

Subsystem:
Native (none required)

Linker version:
9.0

CTPH (ssdeep):
1536:9fjq7nqsXk7cfk20kQo9tSRw2wdTlwzHptJTqn:Vj4qsXk78UkdQw2wdpwzHpzTqn

Entry address:
0x11064

Entry point:
48, 83, EC, 28, 4C, 8B, C2, 4C, 8B, C9, E8, 95, FF, FF, FF, 49, 8B, D0, 49, 8B, C9, 48, 83, C4, 28, E9, AA, A7, FF, FF, CC, CC, D0, 10, 01, 00, 00, 00, 00, 00, 00, 00, 00, 00, 38, 15, 01, 00, 10, D0, 00, 00, C0, 10, 01, 00, 00, 00, 00, 00, 00, 00, 00, 00, 5A, 15, 01, 00, 00, D0, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 46, 15, 01, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 34, 12, 01, 00, 00, 00, 00, 00, 48, 12, 01, 00, 00, 00, 00, 00, 66, 12, 01, 00...
 
[+]

Entropy:
6.3834

Code size:
46 KB (47,104 bytes)

Driver
Display name:
{df47b99d-26f5-45f4-85c5-97b4da365f21}Gt64

Type:
Kernel device driver (KernelDriver)

Group:
PNP_TDI


herdProtect is a second line of defense malware removal platform powered by 68 anti-malware engines in the cloud. Since no single anti-malware program is perfect 100% of the time, herdProtect utilizes a 'herd' of multiple engines to guarantee the widest coverage and the earliest possible detection.