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skype-6-20-0-104-32-bits.exe

No Zebra Network Ltda.

The installer utilizes the installCore download manager which may bundle additional offers for various ad-supported toolbars, extensions and utilities. The application skype-6-20-0-104-32-bits.exe by No Zebra Networka has been detected as adware by 14 anti-malware scanners. The program is a setup application that uses the installCore installer. The setup program uses the InstallCore engine which may bundle additional software offers including toolbars and browser extensions. The file has been seen being downloaded from gerenciador.nzs.com.br and multiple other hosts.
Publisher:
No Zebra Network Ltda.  (signed and verified)

MD5:
2a14364d4cf75ad20f8eeae451c43123

SHA-1:
b06715163dfc85d794df676aa9b2192ec1d8416b

SHA-256:
a53e81d1992f9290a13569dec02c640ee2b4514bdd8244e2200c258a0f9f706c

Scanner detections:
14 / 68

Status:
Adware

Explanation:
Uses the InstallCore download manager to install additional potentially unwanted software which may include extensions such as DealPly and various toolbars.

Description:
This is an installer which may bundle legitimate applications with offers for additional 3rd-party applications that may be unwanted by the user. While the installer contains an 'opt-out' feature this is not set be defult and is usually overlooked.

Analysis date:
11/27/2024 3:55:20 PM UTC  (today)

Scan engine
Detection
Engine version

Avira AntiVirus
ADWARE/InstallCore.Gen9
7.11.181.228

AVG
Generic
2015.0.3300

Baidu Antivirus
Adware.Win32.InstallCore
4.0.3.14115

Dr.Web
Trojan.InstallCore.11
9.0.1.0309

ESET NOD32
Win32/InstallCore.PL (variant)
8.10632

F-Prot
W32/InstallCore.AC.gen
v6.4.7.1.166

K7 AntiVirus
Unwanted-Program
13.185.13827

Malwarebytes
PUP.Optional.Installcore
v2014.11.05.11

McAfee
Artemis!2A14364D4CF7
5600.6956

Reason Heuristics
PUP.NoZebraNetworka.BB
14.11.5.11

Sophos
Generic PUA LA
4.98

Trend Micro House Call
Suspicious_GEN.F47V1006
7.2.309

Vba32 AntiVirus
Malware-Cryptor.InstallCore.gen
3.12.26.3

VIPRE Antivirus
Trojan.Win32.Generic
34310

File size:
668.5 KB (684,544 bytes)

File type:
Executable application (Win32 EXE)

Bundler/Installer:
installCore (using Inno Setup)

Language:
Language Neutral

Common path:
C:\users\{user}\downloads\skype-6-20-0-104-32-bits.exe

Digital Signature
Signed by:
No Zebra Network Ltda.

Authority:
Thawte, Inc.

Valid from:
8/11/2014 9:00:00 PM

Valid to:
8/12/2015 8:59:59 PM

Subject:
CN=No Zebra Network Ltda., OU=IT, O=No Zebra Network Ltda., L=Curitiba, S=Paran, C=BR

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

Serial number:
49D9BC150ECE10C921669720128B3CF3

File PE Metadata
Compilation timestamp:
6/19/1992 7:22:17 PM

OS version:
1.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
2.25

CTPH (ssdeep):
12288:sN3vpxzkWYGA6stQzZzQzAJiF3d6jcZ3mNG/YevlbpXC+Q:sRvLzVnGQOzAJiD6AANG/YIbpX5Q

Entry address:
0x9C40

Entry point:
55, 8B, EC, 83, C4, C4, 53, 56, 57, 33, C0, 89, 45, F0, 89, 45, DC, E8, 86, 94, FF, FF, E8, 8D, A6, FF, FF, E8, 1C, A9, FF, FF, E8, 53, C9, FF, FF, E8, 9A, C9, FF, FF, E8, C9, F2, FF, FF, E8, 30, F4, FF, FF, 33, C0, 55, 68, FC, A2, 40, 00, 64, FF, 30, 64, 89, 20, 33, D2, 55, 68, C5, A2, 40, 00, 64, FF, 32, 64, 89, 22, A1, 14, C0, 40, 00, E8, 96, FE, FF, FF, E8, C9, FA, FF, FF, 8D, 55, F0, 33, C0, E8, 83, CF, FF, FF, 8B, 55, F0, B8, 24, CE, 40, 00, E8, 32, 95, FF, FF, 6A, 02, 6A, 00, 6A, 01, 8B, 0D, 24, CE...
 
[+]

Packer / compiler:
Inno Setup v5.x - Installer Maker

Code size:
37 KB (37,888 bytes)

The file skype-6-20-0-104-32-bits.exe has been seen being distributed by the following 10 URLs.

http://gerenciador.nzs.com.br/nocache/programas/urls/iron/.../skype-62-91-4102971.exe

http://install.nznweb.com.br/nocache/programas/urls/iron/.../skype-74-51-4102903.exe

http://gerenciador.nzs.com.br/nocache/programas/urls/iron/.../skype-45-71-4102991.exe

http://gerenciador.baixaki.com.br/nocache/programas/urls/iron/.../skype-22-41-4102942.exe

http://install.nznweb.com.br/nocache/programas/urls/iron/.../skype-55-02-4102992.exe

http://gerenciador.nzs.com.br/nocache/programas/urls/iron/.../skype-24-81-4102902.exe

http://gerenciador.nozebra.com.br/nocache/programas/urls/iron/.../skype-7-31-4102972.exe

http://gerenciador.nzs.com.br/nocache/programas/urls/iron/.../skype-3-41-4102991.exe

http://gerenciador.nzs.com.br/nocache/programas/urls/iron/.../skype-5-41-4102902.exe

http://install.nznweb.com.br/nocache/programas/urls/iron/.../skype-14-91-4102992.exe

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