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{31a2f244-4a67-4367-b593-df9513aea360}t64.sys

PortalMore

Part of the Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The file {31a2f244-4a67-4367-b593-df9513aea360}t64.sys by PortalMore 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 64-bit kernel mode device driver named “{31a2f244-4a67-4367-b593-df9513aea360}t64”.
Publisher:
StdLib  (signed by PortalMore)

Product:
StdLib

Version:
1.4.3.1 built by: WinDDK

MD5:
e72ecc61ead5caf26e4804686ae11a73

SHA-1:
6d36f4c47fce4fd7f2d2197ee99950d3d32a13ea

SHA-256:
83a9516834950a3f1e0efb664bd6f927a1940c1d036d5d1e09959be6e65cb922

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:
12/24/2024 12:15:40 PM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Yontoo (M)
17.2.21.20

File size:
58.6 KB (59,992 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\{31a2f244-4a67-4367-b593-df9513aea360}t64.sys

Digital Signature
Signed by:
PortalMore

Authority:
DigiCert Inc

Valid from:
6/9/2014 5:00:00 AM

Valid to:
6/17/2015 5:00:00 PM

Subject:
CN=PortalMore, O=PortalMore, L=Santa Monica, S=California, C=US

Issuer:
CN=DigiCert Assured ID Code Signing CA-1, OU=www.digicert.com, O=DigiCert Inc, C=US

Serial number:
0EBE0142555C3B0E57555883DE1E0967

File PE Metadata
Compilation timestamp:
7/31/2014 12:34:02 AM

OS version:
6.1

OS bitness:
Win64

Subsystem:
Native (none required)

Linker version:
9.0

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:
6.3814

Code size:
45 KB (46,080 bytes)

Driver
Display name:
{31a2f244-4a67-4367-b593-df9513aea360}t64

Type:
Kernel device driver (KernelDriver)

Group:
PNP_TDI


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