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{4a1ea04b-0e0d-426d-8775-2d82a1b8bb52}gw.sys

tanzuki

Part of the Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The file {4a1ea04b-0e0d-426d-8775-2d82a1b8bb52}gw.sys by tanzuki 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 “{4a1ea04b-0e0d-426d-8775-2d82a1b8bb52}Gw”.
Publisher:
tanzuki  (signed and verified)

MD5:
fceb532e8e208449bc8c2267df9835c3

SHA-1:
f90ca6950831c93252c9d72fdc35a8cee9de7de0

SHA-256:
bd4244bdc294dcc9c7cd5cd1ec682f54e33be54d5245f8768b03b641be83a3c6

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:
11/27/2024 6:33:13 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Yontoo (M)
16.11.22.22

File size:
38.2 KB (39,096 bytes)

File type:
Driver (Win32 SYS)

Common path:
C:\Windows\System32\drivers\{4a1ea04b-0e0d-426d-8775-2d82a1b8bb52}gw.sys

Digital Signature
Signed by:
tanzuki

Authority:
VeriSign, Inc.

Valid from:
8/21/2013 6:00:00 AM

Valid to:
8/21/2015 5:59:59 AM

Subject:
CN=tanzuki, OU=Digital ID Class 3 - Microsoft Software Validation v2, O=tanzuki, 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:
5094CECD4B5D21903C384E60AC45C6C4

File PE Metadata
Compilation timestamp:
9/13/2014 5:32:59 AM

OS version:
6.1

OS bitness:
Win32

Subsystem:
Native (none required)

Linker version:
9.0

CTPH (ssdeep):
768:Rf5OQ5p9MZq9Vkh5z8tZfJm/6D1GqA+5+TFpEwX+5:Rf5H5pH+x8t1c/+Gd+5/4Y

Entry address:
0x903E

Entry point:
8B, FF, 55, 8B, EC, E8, BD, FF, FF, FF, 5D, E9, 20, 80, FF, FF, CC, CC, 74, 91, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, AE, 94, 00, 00, C0, 70, 00, 00, B4, 90, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 04, 95, 00, 00, 00, 70, 00, 00, EC, 90, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, A0, 98, 00, 00, 38, 70, 00, 00, C4, 90, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 98, 99, 00, 00, 10, 70, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, DC, 94, 00, 00, F0, 94, 00, 00, C8, 94...
 
[+]

Entropy:
6.6567

Code size:
24.5 KB (25,088 bytes)

Driver
Display name:
{4a1ea04b-0e0d-426d-8775-2d82a1b8bb52}Gw

Type:
Kernel device driver (KernelDriver)

Group:
PNP_TDI


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