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windowsupgradeassistant-8.1.exe

LLC

The application windowsupgradeassistant-8.1.exe by LLC has been detected as adware by 1 anti-malware scanner with very strong indications that the file is a potential threat. This is a setup program which is used to install the application. The file has been seen being downloaded from work-soft.net.
Publisher:
LLC   (signed and verified)

MD5:
efd3ae78a1c32f915134d6923fa5ba41

SHA-1:
fb591bbd266b0c468e8368e21714ba729e825e75

SHA-256:
d0fe8f51d56649e3db883acb6833e460452fb6165ff331fe1c138938661a4bb5

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 4:41:06 PM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Amonitize (M)
15.11.12.18

File size:
3.3 MB (3,493,848 bytes)

File type:
Executable application (Win32 EXE)

Common path:
C:\users\{user}\downloads\windowsupgradeassistant-8.1.exe

Digital Signature
Signed by:
LLC

Authority:
COMODO CA Limited

Valid from:
10/1/2015 3:00:00 AM

Valid to:
10/1/2016 2:59:59 AM

Subject:
CN="LLC ""AZ SOFT""", O="LLC ""AZ SOFT""", STREET="Vulytsya Dalnytska, Budynok 23/4, Ofis 310", L=Odesa, S=Odeska, PostalCode=65005, C=UA

Issuer:
CN=COMODO RSA Code Signing CA, O=COMODO CA Limited, L=Salford, S=Greater Manchester, C=GB

Serial number:
3CCA67117AE7C5BE2F99ECBA3ECC9F69

File PE Metadata
Compilation timestamp:
11/29/2009 4:05:19 AM

OS version:
5.0

OS bitness:
Win32

Subsystem:
Windows Console

Linker version:
9.0

CTPH (ssdeep):
49152:t4SI1qA0oshCv2MVzqWzKVVyG1S9UfJjScOEstBvz85:t4bX0osU+MVzrCnEc/A1z85

Entry address:
0x81E40

Entry point:
55, 8B, EC, 81, EC, AC, 03, 00, 00, 6A, 00, 6A, 00, 6A, 00, 6A, 00, FF, 15, 40, 34, 49, 00, 0F, B6, 44, 24, E0, 89, 85, 58, FF, FF, FF, 8B, 4D, FC, 89, 4D, F4, 83, BD, 00, FF, FF, FF, 00, 74, 23, BA, BC, 04, 00, 00, 2B, 95, D8, FE, FF, FF, 0F, B6, 85, 1B, FF, FF, FF, 8B, 8D, 40, FE, FF, FF, 2B, C8, 0B, D1, 66, 89, 95, 54, FE, FF, FF, 6A, 00, 6A, 00, FF, 15, E0, 31, 49, 00, 8B, 95, 7C, FF, FF, FF, 8B, 85, 34, FF, FF, FF, 8D, 8C, 10, 40, FC, 0B, 00, 89, 4D, E8, 8B, 95, 54, FF, FF, FF, 2B, 95, 78, FE, FF, FF...
 
[+]

Developed / compiled with:
Microsoft Visual C++

Code size:
151 KB (154,624 bytes)

The file windowsupgradeassistant-8.1.exe has been seen being distributed by the following URL.

http://work-soft.net/stop/stop/img/2.php?name=WindowsUpgradeAssistant-8.1.exe&dfu=Njc5Mw==23acd3219c8b29aeaabb328470aacb1e&sec_code=702d9&size=4954736&url=http://work-soft.net/.../download.php?id=Njc5Mw==23acd3219c8b29aeaabb328470aacb1e

Remove windowsupgradeassistant-8.1.exe - Powered by Reason Core Security
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