home

stool_cyutil.exe

STool

nbiz Ltd.

The application stool_cyutil.exe by nbiz has been detected as adware by 1 anti-malware scanner with very strong indications that the file is a potential threat. The program is a setup application that uses the NSIS (Nullsoft Scriptable Install System) installer.
Publisher:
NBZ Corp.  (signed by nbiz Ltd.)

Product:
STool

Version:
1.0.0.1

MD5:
a0e15c91fc60122ceb4578d816c13725

SHA-1:
3b7e0e297d1abedd1824351840556fdaa0d756e5

SHA-256:
5cb96e94b961832c7ee7980944830ace3dae7fd03d9b4d1a1fa716b7d4257b0f

Scanner detections:
1 / 68

Status:
Adware

Note:
Our current pool of anti-malware engines have not currently detected this file, however based on our own detection heuristics we feel that this file is unwanted.

Analysis date:
4/18/2024 1:31:13 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.nbiz.Installer (M)
16.2.5.5

File size:
74.5 KB (76,304 bytes)

Copyright:
(c) NBZ. All rights reserved.

File type:
Executable application (Win32 EXE)

Installer:
NSIS (Nullsoft Scriptable Install System)

Common path:
C:\users\{user}\appdata\roaming\downctrldisk\stool_cyutil.exe

Digital Signature
Signed by:
nbiz Ltd.

Authority:
Thawte, Inc.

Valid from:
2/25/2013 9:00:00 AM

Valid to:
4/27/2015 8:59:59 AM

Subject:
CN=nbiz Ltd., O=nbiz Ltd., L=Gangnam-gu, S=Seoul, C=KR

Issuer:
CN=Thawte Code Signing CA - G2, O="Thawte, Inc.", C=US

Serial number:
4169B218A122412E6D5CC3230C1EC9C2

File PE Metadata
Compilation timestamp:
6/7/2009 6:41:59 AM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
6.0

CTPH (ssdeep):
1536:1pgpHzb9dZVX9fHMvG0D3XJTyg84TbGxkqIzjbanyO:ngXdZt9P6D3XJGgc5KU

Entry address:
0x30FA

Entry point:
81, EC, 80, 01, 00, 00, 53, 55, 56, 33, DB, 57, 89, 5C, 24, 18, C7, 44, 24, 10, 60, 91, 40, 00, 33, F6, C6, 44, 24, 14, 20, FF, 15, 30, 70, 40, 00, 68, 01, 80, 00, 00, FF, 15, B0, 70, 40, 00, 53, FF, 15, 7C, 72, 40, 00, 6A, 08, A3, 18, EC, 42, 00, E8, F1, 2B, 00, 00, A3, 64, EB, 42, 00, 53, 8D, 44, 24, 34, 68, 60, 01, 00, 00, 50, 53, 68, 98, 8F, 42, 00, FF, 15, 58, 71, 40, 00, 68, 54, 91, 40, 00, 68, 60, E3, 42, 00, E8, A4, 28, 00, 00, FF, 15, AC, 70, 40, 00, BF, 00, 40, 43, 00, 50, 57, E8, 92, 28, 00, 00...
 
[+]

Entropy:
6.4421

Packer / compiler:
Nullsoft install system v2.x

Code size:
23.5 KB (24,064 bytes)

Remove stool_cyutil.exe - Powered by Reason Core Security
herdProtect is a second line of defense malware removal platform powered by 68 anti-malware engines in the cloud. Since no single anti-malware program is perfect 100% of the time, herdProtect utilizes a 'herd' of multiple engines to guarantee the widest coverage and the earliest possible detection.