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{552199fb-9890-4055-9aaf-b2f6d51d46e9}gw64.sys

PlurPush

Part of the Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The file {552199fb-9890-4055-9aaf-b2f6d51d46e9}gw64.sys by PlurPush has been detected as adware by 10 anti-malware scanners. It runs as a Windows 64-bit kernel mode device driver named “{552199fb-9890-4055-9aaf-b2f6d51d46e9}Gw64”.
Publisher:
StdLib  (signed by PlurPush)

Product:
StdLib

Version:
1.4.3.1 built by: WinDDK

MD5:
e2889ea4edc436824b80f106d8c8f3b6

SHA-1:
2ce065fd452ef00030e92f0ce22ff99cb334b7eb

SHA-256:
1218823e3988a59712d91e4d4a1084c0ebc6cabb65610dc17416fe458b468bb2

Scanner detections:
10 / 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:
4/29/2025 2:58:11 PM UTC  (today)

Scan engine
Detection
Engine version

Lavasoft Ad-Aware
Adware.Agent.OBN
911

AVG
MalSign.Generic
2015.0.3482

Bitdefender
Adware.Agent.OBN
1.0.20.1100

Emsisoft Anti-Malware
Adware.Agent.OBN
8.14.08.08.12

F-Secure
Adware.Agent.OBN
11.2014-08-08_6

G Data
Adware.Agent.OBN
14.8.24

MicroWorld eScan
Adware.Agent.OBN
15.0.0.660

Reason Heuristics
PUP.PlurPush.n
14.8.8.0

Sophos
BrowseSmart
4.98

VIPRE Antivirus
Trojan.Win32.Generic
28940

File size:
59.7 KB (61,112 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\{552199fb-9890-4055-9aaf-b2f6d51d46e9}gw64.sys

Digital Signature
Signed by:
PlurPush

Authority:
VeriSign, Inc.

Valid from:
9/18/2013 8:00:00 PM

Valid to:
9/19/2015 7:59:59 PM

Subject:
CN=PlurPush, OU=Digital ID Class 3 - Microsoft Software Validation v2, O=PlurPush, 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:
30ACE095C6EE9F3C39428EB86ECAFADF

File PE Metadata
Compilation timestamp:
1/30/2014 7:45:30 PM

OS version:
6.1

OS bitness:
Win64

Subsystem:
Native (none required)

Linker version:
9.0

CTPH (ssdeep):
768:zot2dxF9O8ZF33iqiIy938bWp9XcfBvJkowidIrr:z9JRicy938ip9ea1j3

Entry address:
0xF064

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, 2E, 20, FF, FF, CC, CC, 38, F2, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 1C, F6, 00, 00, 60, C1, 00, 00, 28, F1, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, BE, F9, 00, 00, 50, C0, 00, 00, D8, F0, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, B6, FA, 00, 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, 00, 00, 00, 00, 9A, FA, 00, 00, 00, 00, 00, 00, 86, FA, 00, 00...
 
[+]

Entropy:
5.9647

Code size:
46.5 KB (47,616 bytes)

Driver
Display name:
{552199fb-9890-4055-9aaf-b2f6d51d46e9}Gw64

Type:
Kernel device driver (KernelDriver)

Group:
PNP_TDI


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