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{107f8021-5c6b-4b28-9f32-3548a67a8cc0}w64.sys

PortalMore

Part of the Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The file {107f8021-5c6b-4b28-9f32-3548a67a8cc0}w64.sys by PortalMore has been detected as adware by 24 anti-malware scanners. It runs as a Windows 64-bit kernel mode device driver named “{107f8021-5c6b-4b28-9f32-3548a67a8cc0}w64”. 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 PortalMore)

Product:
StdLib

Version:
1.4.4.6 built by: WinDDK

MD5:
03a2e883a2b888b4be4a0f25bd486928

SHA-1:
8a64a985cb27b642f0e8ccfb481700a189be4a65

SHA-256:
9ccf4ea6aa9c847006108c616e852343f0318d57a0f40ca46e3a76f1a0b8cf43

Scanner detections:
24 / 68

Status:
Adware

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

Analysis date:
4/25/2024 7:38:06 AM UTC  (today)

Scan engine
Detection
Engine version

Lavasoft Ad-Aware
Adware.SwiftBrowse.CH
741

Agnitum Outpost
Riskware.Agent
7.1.1

AhnLab V3 Security
Win-PUP/BrowseFox.Gen
2014.12.26

avast!
Win32:BrowseFox-ES [PUP]
2014.9-150125

AVG
PortalMore
2016.0.3219

Baidu Antivirus
Adware.Win64.BrowseFox
4.0.3.15125

Bitdefender
Adware.SwiftBrowse.CH
1.0.20.125

Clam AntiVirus
Win.Adware.Swiftbrowse-497
0.98/21511

Dr.Web
Tool.NetFilter.313
9.0.1.025

Emsisoft Anti-Malware
Adware.SwiftBrowse.CH
8.15.01.25.01

ESET NOD32
Win64/BrowseFox.AJ (variant)
9.10927

F-Prot
W64/A-59c9c70a
v6.4.7.1.166

F-Secure
Adware.SwiftBrowse.CH
11.2015-25-01_1

G Data
Adware.SwiftBrowse.CH
15.1.24

K7 AntiVirus
Trojan
13.188.14440

McAfee
Artemis!03A2E883A2B8
5600.6875

MicroWorld eScan
Adware.SwiftBrowse.CH
16.0.0.75

NANO AntiVirus
Riskware.Win64.NetFilter.djsenh
0.30.0.64448

nProtect
Adware.SwiftBrowse.CH
14.12.24.01

Reason Heuristics
PUP.Yontoo
15.1.25.1

Rising Antivirus
PE:Trojan.Win32.Generic.17C76974!398944628
23.00.65.15123

Trend Micro House Call
Suspicious_GEN.F47V1203
7.2.25

VIPRE Antivirus
Trojan.Win32.Generic
36070

Zillya! Antivirus
Adware.Yotoon.Win64.14
2.0.0.2016

File size:
47.6 KB (48,784 bytes)

Product version:
1.4.4.6

Copyright:
Copyright © 2013 StdLib

Original file name:
StdLib.sys

File type:
Driver (Win64 SYS)

Common path:
C:\Windows\System32\drivers\{107f8021-5c6b-4b28-9f32-3548a67a8cc0}w64.sys

Digital Signature
Signed by:
PortalMore

Authority:
VeriSign, Inc.

Valid from:
10/8/2014 8:00:00 AM

Valid to:
10/9/2015 7:59:59 AM

Subject:
CN=PortalMore, O=PortalMore, 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:
14DCC59945E4B46B41587E1F633D56C1

File PE Metadata
Compilation timestamp:
12/1/2014 7:30:59 AM

OS version:
6.1

OS bitness:
Win64

Subsystem:
Native (none required)

Linker version:
9.0

CTPH (ssdeep):
768:lB7G2EjsnyXeOUEGG0LA8tWFZuL470h6aqxcCT2kvsVRwlZD3PxI:fFID6EGnLA8AFJTNEVmDa

Entry address:
0xC064

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, E2, 50, FF, FF, CC, CC, 78, C2, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 54, C6, 00, 00, A0, 91, 00, 00, 28, C1, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, DA, CA, 00, 00, 50, 90, 00, 00, D8, C0, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, D2, CB, 00, 00, 00, 90, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, B6, CB, 00, 00, 00, 00, 00, 00, A2, CB, 00, 00...
 
[+]

Code size:
34.5 KB (35,328 bytes)

Driver
Display name:
{107f8021-5c6b-4b28-9f32-3548a67a8cc0}w64

Type:
Kernel device driver (KernelDriver)

Group:
PNP_TDI


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