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{6fcd6092-9615-4f7f-8898-8df53980e5d2}gt.sys

NetCrawl

Part of the Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The file {6fcd6092-9615-4f7f-8898-8df53980e5d2}gt.sys by NetCrawl has been detected as adware by 15 anti-malware scanners. It runs as a Windows kernel mode device driver named “{6fcd6092-9615-4f7f-8898-8df53980e5d2}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 NetCrawl)

Product:
StdLib

Version:
1.4.3.1 built by: WinDDK

MD5:
01c94f694484ef88b925f247d2d6350c

SHA-1:
249631bb9b2dc76eb7d35bda11ae9e79b2fd35f6

Scanner detections:
15 / 68

Status:
Adware

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

Analysis date:
4/18/2024 10:25:14 PM UTC  (today)

Scan engine
Detection
Engine version

AVG
NetCrawl
2015.0.3367

Baidu Antivirus
Adware.Win32.BrowseFox
4.0.3.14829

Dr.Web
Trojan.BPlug.117
9.0.1.0241

IKARUS anti.virus
AdWare.SwiftBrowse
t3scan.1.6.1.0

McAfee
Artemis!E41C1D5B51C6
5600.7023

NANO AntiVirus
Trojan.Win32.BPlug.dcxxfx
0.28.2.61148

Reason Heuristics
PUP.NetCrawl.l
14.8.29.16

Trend Micro House Call
Suspicious_GEN.F47V0708
7.2.241

VIPRE Antivirus
Trojan.Win32.Generic
31728

File size:
53.9 KB (55,224 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\{6fcd6092-9615-4f7f-8898-8df53980e5d2}gt.sys

Digital Signature
Signed by:
NetCrawl

Authority:
VeriSign, Inc.

Valid from:
4/29/2014 2:00:00 AM

Valid to:
4/30/2015 1:59:59 AM

Subject:
CN=NetCrawl, OU=Digital ID Class 3 - Microsoft Software Validation v2, O=NetCrawl, 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:
3C05F8D25EB72CD5B6EB863AA0585F70

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:VFbP7EDNtMTw/RWDjR/McKV5qEXGBJgxgZ+4AOmvtnBU6+RRACMU:7P7EJSTukuzTrGYs+JNBUtR0U

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...
 
[+]

Entropy:
6.3485

Code size:
36.3 KB (37,120 bytes)

Driver
Display name:
{6fcd6092-9615-4f7f-8898-8df53980e5d2}Gt

Type:
Kernel device driver (KernelDriver)

Group:
PNP_TDI


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