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{a0ba8639-a84f-4eef-ae73-2eeae0593895}t.sys

loffinam

Part of the Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The file {a0ba8639-a84f-4eef-ae73-2eeae0593895}t.sys by loffinam 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 “{a0ba8639-a84f-4eef-ae73-2eeae0593895}t”.
Publisher:
StdLib  (signed by loffinam)

Product:
StdLib

Version:
1.4.3.1 built by: WinDDK

MD5:
b309abcf7e5fc441c1a2ea015a1927a9

SHA-1:
6c87424bb1a8f5db15825355e5f42892e76118fa

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 12:06:39 PM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Yontoo (M)
17.2.10.17

File size:
54.6 KB (55,864 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\{a0ba8639-a84f-4eef-ae73-2eeae0593895}t.sys

Digital Signature
Signed by:
loffinam

Authority:
VeriSign, Inc.

Valid from:
11/14/2013 1:00:00 AM

Valid to:
11/15/2014 12:59:59 AM

Subject:
CN=loffinam, OU=Digital ID Class 3 - Microsoft Software Validation v2, O=loffinam, 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:
22B7A9A338918FF4849948EF0C908FAA

File PE Metadata
Compilation timestamp:
9/22/2014 9:01:43 PM

OS version:
6.1

OS bitness:
Win32

Subsystem:
Native (none required)

Linker version:
9.0

Entry address:
0xA9BE

Entry point:
8B, FF, 55, 8B, EC, E8, BD, FF, FF, FF, 5D, E9, 2A, E4, FF, FF, CC, CC, 34, AA, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 04, AE, 00, 00, 94, 93, 00, 00, 20, AA, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 3A, AE, 00, 00, 80, 93, 00, 00, 2C, AA, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 56, AE, 00, 00, 8C, 93, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 26, AE, 00, 00, 12, AE, 00, 00, 00, 00, 00, 00, 42, AE, 00, 00, 00, 00, 00, 00, 2C, AB, 00, 00, 44, AB, 00, 00, 56, AB...
 
[+]

Code size:
37 KB (37,888 bytes)

Driver
Display name:
{a0ba8639-a84f-4eef-ae73-2eeae0593895}t

Type:
Kernel device driver (KernelDriver)

Group:
PNP_TDI


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