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{88dc2563-5377-4e03-b524-b69a1c9aaafe}w.sys

Bellaphant

Part of the Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The file {88dc2563-5377-4e03-b524-b69a1c9aaafe}w.sys by Bellaphant has been detected as adware by 1 anti-malware scanner with very strong indications that the file is a potential threat. It runs as a Windows kernel mode device driver named “{88dc2563-5377-4e03-b524-b69a1c9aaafe}w”.
Publisher:
StdLib  (signed by Bellaphant)

Product:
StdLib

Version:
1.4.3.1 built by: WinDDK

MD5:
7bee4f123ff0d09fd398b1a40cff2c3e

SHA-1:
2d0325a92ec8382a79d0992050d877e54baa4358

SHA-256:
c49409b94e7f299a1e80d8be4993a4252cb0052c3d7c82d11edd0572be766a78

Scanner detections:
1 / 68

Status:
Adware

Explanation:
Belongs to the Sambreel/Yontoo progam that inserts various forms of advertising in the user's web browser, installed with minimal or no user consent.

Analysis date:
4/25/2024 12:20:37 PM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Yontoo.Bellaphant (M)
15.11.10.0

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\{88dc2563-5377-4e03-b524-b69a1c9aaafe}w.sys

Digital Signature
Signed by:
Bellaphant

Authority:
VeriSign, Inc.

Valid from:
2/4/2014 3:00:00 AM

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

Subject:
CN=Bellaphant, OU=Digital ID Class 3 - Microsoft Software Validation v2, O=Bellaphant, 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:
091E341F0CA025C071ED6948A741F5F4

File PE Metadata
Compilation timestamp:
1/31/2014 3:45:28 AM

OS version:
6.1

OS bitness:
Win32

Subsystem:
Native (none required)

Linker version:
9.0

CTPH (ssdeep):
768:mIsHpnKHCBSqUPJHKQpkJxpKwT2bcWiJmOtX3g2rp3lnRdmlPQJl:RsHRKHLJqQpkYwTsiTtXxtRolI7

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:
6.3559

Code size:
37 KB (37,888 bytes)

Driver
Display name:
{88dc2563-5377-4e03-b524-b69a1c9aaafe}w

Type:
Kernel device driver (KernelDriver)

Group:
PNP_TDI


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