home

tstlibg64.sys

lucky leap

Part of the Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The file tstlibg64.sys by lucky leap has been detected as adware by 18 anti-malware scanners. It runs as a Windows 64-bit kernel mode device driver named “tStLibG64”. 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 lucky leap)

Product:
StdLib

Version:
1.4.3.1 built by: WinDDK

MD5:
fba150f2aa1fb4914c7607c122fedd97

SHA-1:
5351820e4811e2b0c50026e9cfdc89627fca2544

SHA-256:
0395d713aedf7e5d99f88327c23647dcb31cf3115972fb5e4a19284a44ac30fa

Scanner detections:
18 / 68

Status:
Adware

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

Analysis date:
4/19/2024 8:55:21 AM UTC  (today)

Scan engine
Detection
Engine version

Agnitum Outpost
PUA.Agent
7.1.1

AhnLab V3 Security
Win-PUP/BrowseFox.Gen
2015.03.31

avast!
Win32:BrowseFox-CY [PUP]
150319-1

AVG
NetCrawl
2016.0.3154

Baidu Antivirus
Adware.Win32.BrowseFox
4.0.3.1574

Bkav FE
W64.HfsAdware
1.3.0.6379

Clam AntiVirus
Win.Adware.Swiftbrowse-8
0.98/21411

Dr.Web
Trojan.BPlug.123
9.0.1.0185

ESET NOD32
Win64/NetFilter.A potentially unsafe application
7.0.302.0

F-Prot
W64/A-7883d091
v6.4.7.1.166

herdProtect (fuzzy)
variant of {57f143ae-1ecd-493d-9ddb-32c45a3cecd5}gt64.sys (Adware)
2015.7.4.20

IKARUS anti.virus
PUA.Elex
t3scan.1.7.5.0

McAfee
Artemis!0DAFC2CAD167
5600.6714

Reason Heuristics
PUP.Yontoo
15.3.30.22

Sophos
Lucky Leap
4.98

Trend Micro House Call
Suspicious_GEN.F47V0807
7.2.185

VIPRE Antivirus
Trojan.Win32.Generic
32220

Zillya! Antivirus
Adware.Yotoon.Win64.9
2.0.0.2122

File size:
58.7 KB (60,096 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\tstlibg64.sys

Digital Signature
Signed by:
lucky leap

Authority:
VeriSign, Inc.

Valid from:
8/12/2013 7:00:00 PM

Valid to:
8/13/2015 6:59:59 PM

Subject:
CN=lucky leap, OU=Digital ID Class 3 - Microsoft Software Validation v2, O=lucky leap, 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:
6A5011DFCDBB457548BCC92ED7587788

File PE Metadata
Compilation timestamp:
1/30/2014 6:46:41 PM

OS version:
6.1

OS bitness:
Win64

Subsystem:
Native (none required)

Linker version:
9.0

CTPH (ssdeep):
1536:ZA0Ep72J9xc1JUzUPU/qnIy4fNwQKZzrtW+DGt:S0G72J8YvqIy4fNwQKNrtNDGt

Entry address:
0x10064

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, 8E, B3, FF, FF, CC, CC, D0, 00, 01, 00, 00, 00, 00, 00, 00, 00, 00, 00, 40, 05, 01, 00, 10, C0, 00, 00, C0, 00, 01, 00, 00, 00, 00, 00, 00, 00, 00, 00, 62, 05, 01, 00, 00, C0, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 4E, 05, 01, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 3C, 02, 01, 00, 00, 00, 00, 00, 50, 02, 01, 00, 00, 00, 00, 00, 6E, 02, 01, 00...
 
[+]

Entropy:
6.4031

Code size:
45 KB (46,080 bytes)

Driver
Display name:
tStLibG64

Type:
Kernel device driver (KernelDriver)

Group:
PNP_TDI


Remove tstlibg64.sys - Powered by Reason Core Security
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.