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Skype.exe

dobreprogramy sp. z o.o.

The installer utilizes the installCore download manager which may bundle additional offers for various ad-supported toolbars, extensions and utilities. The application Skype.exe by dobreprogramy sp. z o.o has been detected as adware by 9 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 download.dobreprogramy.pl and multiple other hosts.
Publisher:
dobreprogramy sp. z o.o.  (signed and verified)

MD5:
2e17afc1157e3c31e885c2250837474b

SHA-1:
430e878d6026e66b317a5fb1ad1c52d245cb1116

SHA-256:
6e9d8beb9cd00b7c4417a0c38080d9e1186b6cafc3e4c1e6afebd3cee4a4dcbb

Scanner detections:
9 / 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 'download manager' is also considered bundleware, a utility designed to download software (possibly legitimate or opensource) and bundle it with a number of optional offers including ad-supported utilities, toolbars, shopping comparison tools and browser extensions.

Analysis date:
4/18/2024 4:23:34 PM UTC  (today)

Scan engine
Detection
Engine version

Agnitum Outpost
PUA.InstallCore
7.1.1

Avira AntiVirus
ADWARE/InstallCore.Gen7
7.11.143.80

AVG
MalSign.InstallC
2015.0.3505

Dr.Web
Trojan.Packed.24524
9.0.1.0104

ESET NOD32
Win32/InstallCore.MH
8.9672

K7 AntiVirus
Unwanted-Program
13.176.11737

Reason Heuristics
PUP.dobreprogramyspzoo.M
14.4.13.22

Sophos
Install Core Click run software
4.98

VIPRE Antivirus
Adware.Win32.InstallCore.ba
28214

File size:
684.4 KB (700,824 bytes)

File type:
Executable application (Win32 EXE)

Bundler/Installer:
installCore (using Inno Setup)

Language:
Language Neutral

Common path:
C:\users\{user}\downloads\skype.exe

Digital Signature
Signed by:
dobreprogramy sp. z o.o.

Authority:
COMODO CA Limited

Valid from:
6/5/2013 8:00:00 PM

Valid to:
6/6/2014 7:59:59 PM

Subject:
CN=dobreprogramy sp. z o.o., O=dobreprogramy sp. z o.o., STREET=Al. Jana Kasprowicza 94, L=Wrocław, S=dolnośląskie, PostalCode=51-145, C=PL

Issuer:
CN=COMODO Code Signing CA 2, O=COMODO CA Limited, L=Salford, S=Greater Manchester, C=GB

Serial number:
00EFC6EDE5717968B796D7BFF8BE2536E9

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

OS version:
1.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
2.25

CTPH (ssdeep):
12288:S4JepWujGjJ2Nieydza84g/2J/VpMvvkgM9GelnVwJz4ZvZpWViltECx:S4JebjaJ23Gzbq/PME7zlnVwJz4ZBp6c

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...
 
[+]

Entropy:
7.8364

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

Code size:
37 KB (37,888 bytes)

The file Skype.exe has been seen being distributed by the following 2 URLs.

http://download.dobreprogramy.pl/.../x86

http://download5.dobreprogramy.pl/.../x86

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