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{5906ab0f-5417-45a6-a4f5-8bc38ae936d5}w.sys

Norpalla

Part of the Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The file {5906ab0f-5417-45a6-a4f5-8bc38ae936d5}w.sys by Norpalla has been detected as adware by 7 anti-malware scanners. It runs as a Windows kernel mode device driver named “{5906ab0f-5417-45a6-a4f5-8bc38ae936d5}w”. It will plug into the web browser and display context-based advertisements by overwriting existing ads or by inserting new ones on various web pages.
Publisher:
StdLib  (signed by Norpalla)

Product:
StdLib

Version:
1.4.3.1 built by: WinDDK

MD5:
d0e99c5515f01943313040ca7521ae94

SHA-1:
00df1fa454fbcb3c054a4e31dd4dd00303b191f3

SHA-256:
0fac962e0a6559d7975effe9550ff7579cd2df3c9590f7e9eff98828231ee4b8

Scanner detections:
7 / 68

Status:
Adware

Explanation:
Injects advertising in the web browser in various formats.

Analysis date:
4/26/2024 12:51:15 PM UTC  (today)

Scan engine
Detection
Engine version

AVG
Norpalla
2015.0.3398

Baidu Antivirus
Adware.Win32.BrowseFox
4.0.3.14729

Dr.Web
Trojan.BPlug.123
9.0.1.05190

herdProtect (fuzzy)
variant of {5906ab0f-5417-45a6-a4f5-8bc38ae936d5}gw.sys (Adware)
2014.9.10.4

Reason Heuristics
PUP.Norpalla.k
14.7.29.21

Vba32 AntiVirus
AdWare.Win64.Yotoon
3.12.26.3

VIPRE Antivirus
Trojan.Win32.Generic
30206

File size:
51.7 KB (52,920 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\{5906ab0f-5417-45a6-a4f5-8bc38ae936d5}w.sys

Digital Signature
Signed by:
Norpalla

Authority:
VeriSign, Inc.

Valid from:
2/4/2014 3:00:00 AM

Valid to:
2/5/2015 2:59:59 AM

Subject:
CN=Norpalla, OU=Digital ID Class 3 - Microsoft Software Validation v2, O=Norpalla, 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:
3CF8FDC7B1329843A9D5EE18CBB6A945

File PE Metadata
Compilation timestamp:
1/31/2014 3:45:28 AM

OS version:
6.1

OS bitness:
Win32

Subsystem:
Native (none required)

Linker version:
9.0

CTPH (ssdeep):
768:GIsHpnKHCBSqUPJHKQpkJxpKwT2bcWiJmOtX3g2rp3lnnPMGe:xsHRKHLJqQpkYwTsiTtXxtEGe

Entry address:
0xC03E

Entry point:
8B, FF, 55, 8B, EC, E8, BD, FF, FF, FF, 5D, E9, 62, 50, FF, FF, CC, CC, 74, C1, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, BC, C4, 00, 00, C0, A0, 00, 00, B4, C0, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 12, C5, 00, 00, 00, A0, 00, 00, EC, C0, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, AE, C8, 00, 00, 38, A0, 00, 00, C4, C0, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, A6, C9, 00, 00, 10, A0, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, EA, C4, 00, 00, FE, C4, 00, 00, D6, C4...
 
[+]

Entropy:
6.3550

Code size:
37 KB (37,888 bytes)

Driver
Display name:
{5906ab0f-5417-45a6-a4f5-8bc38ae936d5}w

Type:
Kernel device driver (KernelDriver)

Group:
PNP_TDI


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