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STool.EXE

STool

nbiz Ltd.

The application STool.EXE by nbiz has been detected as adware by 1 anti-malware scanner with very strong indications that the file is a potential threat. It is set to automatically execute when any user logs into Windows (through the local user run registry setting) with the name ‘STool’.
Publisher:
NBIZ Corp.  (signed by nbiz Ltd.)

Product:
STool

Version:
1, 0, 1, 7

MD5:
4e4429ab531f3d553359e0ffac25fe20

SHA-1:
5bbe4116fe630bb8fc63b055ce589b74b14a7b66

SHA-256:
a8ec0b568cc3d65735a3e61e2e4bda4c89bb72eddd3d479eebbfa9770344e449

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:
4/25/2024 9:54:03 PM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.nbiz (M)
16.2.9.21

File size:
98.5 KB (100,888 bytes)

Product version:
1, 0, 1, 7

Copyright:
(c) NBIZ. All rights reserved.

Original file name:
STool.EXE

File type:
Executable application (Win32 EXE)

Common path:
C:\Program Files\stool\stool.exe

Digital Signature
Signed by:
nbiz Ltd.

Authority:
Thawte, Inc.

Valid from:
2/25/2013 8:00:00 AM

Valid to:
4/27/2015 7:59:59 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:
12/30/2013 5:57:21 PM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
6.0

CTPH (ssdeep):
1536:cnCG1izqFEdJVEaz/3oSEUonxrMnnPx7ut:crEY09/3oS4nWnPx7ut

Entry address:
0xD4EC

Entry point:
55, 8B, EC, 6A, FF, 68, 98, FC, 40, 00, 68, E0, D4, 40, 00, 64, A1, 00, 00, 00, 00, 50, 64, 89, 25, 00, 00, 00, 00, 83, EC, 68, 53, 56, 57, 89, 65, E8, 33, DB, 89, 5D, FC, 6A, 02, FF, 15, 88, F3, 40, 00, 59, 83, 0D, F4, 53, 41, 00, FF, 83, 0D, F8, 53, 41, 00, FF, FF, 15, 64, F3, 40, 00, 8B, 0D, E8, 53, 41, 00, 89, 08, FF, 15, 38, F3, 40, 00, 8B, 0D, E4, 53, 41, 00, 89, 08, A1, 3C, F3, 40, 00, 8B, 00, A3, F0, 53, 41, 00, E8, 16, 01, 00, 00, 39, 1D, F0, 51, 41, 00, 75, 0C, 68, 6E, D6, 40, 00, FF, 15, 40, F3...
 
[+]

Entropy:
5.7434

Developed / compiled with:
Microsoft Visual C++ v6.0

Code size:
56 KB (57,344 bytes)

Startup File (All Users Run)
Registry location:
HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run

Name:
STool

Command:
C:\Program Files\stool\stool.exe


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