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{f1f64b2b-90f5-45c3-8b0e-c9ffd30d8e18}gw.sys

tanzuki

Part of the Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The file {f1f64b2b-90f5-45c3-8b0e-c9ffd30d8e18}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 “{f1f64b2b-90f5-45c3-8b0e-c9ffd30d8e18}Gw”.
Publisher:
tanzuki  (signed and verified)

MD5:
fe8f231e276cba8401f9b80951e45c74

SHA-1:
c842b6dd2e7a305260c1834358df1fe9f96a78f8

SHA-256:
7ec72ab713d9541f641fdc84e2d4384c6cf18a40e3341b643c501b6d815684a2

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:
5/8/2024 2:52:51 PM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Yontoo (M)
16.11.22.22

File size:
42.2 KB (43,192 bytes)

File type:
Driver (Win32 SYS)

Common path:
C:\Windows\System32\drivers\{f1f64b2b-90f5-45c3-8b0e-c9ffd30d8e18}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:
11/27/2014 12:29:35 PM

OS version:
6.1

OS bitness:
Win32

Subsystem:
Native (none required)

Linker version:
9.0

CTPH (ssdeep):
768:ZN0457WBZwpHs63E+X7BIrTsCEziDH+JgrVJddPKU:7hUcpH/0+LCf7EziDHhdx

Entry address:
0xA03E

Entry point:
8B, FF, 55, 8B, EC, E8, BD, FF, FF, FF, 5D, E9, 20, 70, FF, FF, CC, CC, 94, A1, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, CE, A4, 00, 00, E0, 80, 00, 00, B4, A0, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 24, A5, 00, 00, 00, 80, 00, 00, EC, A0, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, A4, A9, 00, 00, 38, 80, 00, 00, C4, A0, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 9C, AA, 00, 00, 10, 80, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, FC, A4, 00, 00, 10, A5, 00, 00, E8, A4...
 
[+]

Entropy:
6.6150

Code size:
28 KB (28,672 bytes)

Driver
Display name:
{f1f64b2b-90f5-45c3-8b0e-c9ffd30d8e18}Gw

Type:
Kernel device driver (KernelDriver)

Group:
PNP_TDI


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