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{a459d632-5225-4bb9-9a0b-002544d16f6e}w.sys

BatBrowse

Part of the Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The file {a459d632-5225-4bb9-9a0b-002544d16f6e}w.sys by BatBrowse has been detected as adware by 3 anti-malware scanners. It runs as a Windows kernel mode device driver named “{a459d632-5225-4bb9-9a0b-002544d16f6e}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 BatBrowse)

Product:
StdLib

Version:
1.4.3.1 built by: WinDDK

MD5:
94e43b360162209a05c6987a3099f384

SHA-1:
fca58e44f89b2c2bd4f83c40a79666fd6330c35e

SHA-256:
e18e82069223b59534de1c0a01bcf980bf095a2b4d53c0d383be989dbbbade2d

Scanner detections:
3 / 68

Status:
Adware

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

Analysis date:
4/25/2024 12:08:45 PM UTC  (today)

Scan engine
Detection
Engine version

Baidu Antivirus
Adware.Win32.BrowseFox
4.0.3.16210

Reason Heuristics
PUP.Yontoo.BatBrowse (M)
16.2.10.15

VIPRE Antivirus
Threat.4150696
29560

File size:
51.7 KB (52,920 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\{a459d632-5225-4bb9-9a0b-002544d16f6e}w.sys

Digital Signature
Signed by:
BatBrowse

Authority:
VeriSign, Inc.

Valid from:
10/7/2013 12:00:00 AM

Valid to:
10/7/2014 11:59:59 PM

Subject:
CN=BatBrowse, OU=Digital ID Class 3 - Microsoft Software Validation v2, O=BatBrowse, 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:
3F7DCC78325FB87F0EDAB32A56DD2A54

File PE Metadata
Compilation timestamp:
1/31/2014 12:45:28 AM

OS version:
6.1

OS bitness:
Win32

Subsystem:
Native (none required)

Linker version:
9.0

CTPH (ssdeep):
768:rIsHpnKHCBSqUPJHKQpkJxpKwT2bcWiJmOtX3g2rp3lnHZqH:UsHRKHLJqQpkYwTsiTtXxt5qH

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:
6.3577

Code size:
37 KB (37,888 bytes)

Driver
Display name:
{a459d632-5225-4bb9-9a0b-002544d16f6e}w

Type:
Kernel device driver (KernelDriver)

Group:
PNP_TDI


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