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{587cb346-a3d8-4884-b39b-f0ed918b6f96}w.sys

TowerTilt

Part of the Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The file {587cb346-a3d8-4884-b39b-f0ed918b6f96}w.sys by TowerTilt has been detected as adware by 28 anti-malware scanners. It runs as a Windows kernel mode device driver named “{587cb346-a3d8-4884-b39b-f0ed918b6f96}w”. 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 TowerTilt)

Product:
StdLib

Version:
1.4.3.1 built by: WinDDK

MD5:
cb814a106ec895cc20446dac9a4732d5

SHA-1:
32a93390d05be5fc4e2712cacf084b61b8ea13f1

SHA-256:
038b0cc271cbe547e245e30c93bb61567ce1f0e250322b7118ed0587e2e84a24

Scanner detections:
28 / 68

Status:
Adware

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

Analysis date:
5/9/2024 6:29:31 PM UTC  (today)

Scan engine
Detection
Engine version

Lavasoft Ad-Aware
Adware.Mplug.DC
356

Agnitum Outpost
Trojan.BPlug
7.1.1

AhnLab V3 Security
PUP/Win32.BrowseFox
2014.09.21

Avira AntiVirus
Adware/BrowseFox.A.168
7.11.172.232

avast!
Win32:BrowseFox-EA [PUP]
2014.9-160213

AVG
Generic
2017.0.2834

Baidu Antivirus
Adware.Win32.BrowseFox
4.0.3.16213

Bitdefender
Adware.Mplug.DC
1.0.20.220

Clam AntiVirus
Win.Adware.Swiftbrowse-79
0.98/19778

Comodo Security
Application.Win32.RiskWare.NetFilter.D
19540

Dr.Web
Trojan.BPlug.123
9.0.1.044

Emsisoft Anti-Malware
Adware.Mplug.DC
8.16.02.13.09

ESET NOD32
Win64/BrowseFox.S potentially unwanted application
10.7.0.302.0

F-Prot
W32/A-c99f2d8b
v6.4.7.1.166

F-Secure
Adware.Mplug.DC
11.2016-13-02_7

G Data
Adware.Mplug.DC
16.2.24

IKARUS anti.virus
AdWare.SwiftBrowse
t3scan.1.7.5.0

McAfee
Artemis!2B10C19D5430
5600.6490

MicroWorld eScan
Adware.Mplug.DC
17.0.0.132

NANO AntiVirus
Riskware.Win32.Yotoon.ddghtt
0.28.2.61519

Norman
Adware.Mplug.DC
11.20160213

nProtect
Adware.Mplug.DC
14.12.12.01

Qihoo 360 Security
Win32/Virus.Adware.c12
1.0.0.1015

Reason Heuristics
PUP.Yontoo.TowerTilt (M)
16.2.13.21

Trend Micro House Call
TROJ_GEN.F47V0603
7.2.44

Vba32 AntiVirus
AdWare.Win64.Yotoon
3.12.26.3

VIPRE Antivirus
Threat.4741131
32938

Zillya! Antivirus
Adware.Yotoon.Win64.7
2.0.0.1911

File size:
51.7 KB (52,928 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\{587cb346-a3d8-4884-b39b-f0ed918b6f96}w.sys

Digital Signature
Signed by:
TowerTilt

Authority:
VeriSign, Inc.

Valid from:
2/4/2014 5:30:00 AM

Valid to:
2/5/2015 5:29:59 AM

Subject:
CN=TowerTilt, OU=Digital ID Class 3 - Microsoft Software Validation v2, O=TowerTilt, 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:
0DC21B60DDFB723E55B2F05376083F29

File PE Metadata
Compilation timestamp:
1/31/2014 6:15:28 AM

OS version:
6.1

OS bitness:
Win32

Subsystem:
Native (none required)

Linker version:
9.0

CTPH (ssdeep):
768:xIsHpnKHCBSqUPJHKQpkJxpKwT2bcWiJmOtX3g2rp3lnzpZW:+sHRKHLJqQpkYwTsiTtXxt9ZW

Entry address:
0xC03E

Entry point:
8B, FF, 55, 8B, EC, E8, BD, FF, FF, FF, 5D, E9, 62, 50, FF, FF, CC, CC, 74, C1, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, BC, C4, 00, 00, C0, A0, 00, 00, B4, C0, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 12, C5, 00, 00, 00, A0, 00, 00, EC, C0, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, AE, C8, 00, 00, 38, A0, 00, 00, C4, C0, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, A6, C9, 00, 00, 10, A0, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, EA, C4, 00, 00, FE, C4, 00, 00, D6, C4...
 
[+]

Entropy:
6.3563

Code size:
37 KB (37,888 bytes)

Driver
Display name:
{587cb346-a3d8-4884-b39b-f0ed918b6f96}w

Type:
Kernel device driver (KernelDriver)

Group:
PNP_TDI


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