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winzip.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 winzip.exe by dobreprogramy sp. z o.o has been detected as adware by 5 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 download2.dobreprogramy.pl.
Publisher:
dobreprogramy sp. z o.o.  (signed and verified)

MD5:
d416aa06f11345b63d34e9eb4d96d238

SHA-1:
8235ec77f0d5b0cc3f228649346b2884711509ae

SHA-256:
8bb9044bcc4f892596ff7ae2b5552bb2636e2cb56ad923b3d05cd549a2e8a0ad

Scanner detections:
5 / 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 also known as bundleware, or downloadware, which is an downloader designed to simply deliver ad-supported offers in the setup routine of an otherwise legitimate software.

Analysis date:
12/25/2024 1:19:52 PM UTC  (today)

Scan engine
Detection
Engine version

avast!
Win32:Evo-gen [Susp]
160518-2

Dr.Web
Trojan.Packed.24524
9.0.1.05190

ESET NOD32
Win32/InstallCore.BY potentially unwanted application
8.0.319.0

F-Prot
W32/InstallCore.R.gen
4.6.5.141

Reason Heuristics
PUP.installCore.dobrepro (M)
16.7.6.3

File size:
699.1 KB (715,888 bytes)

File type:
Executable application (Win32 EXE)

Bundler/Installer:
installCore (using Inno Setup)

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

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

Authority:
COMODO CA Limited

Valid from:
6/6/2013 12:00:00 AM

Valid to:
6/6/2014 11:59:59 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:
6/20/1992 12:22:17 AM

OS version:
1.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
2.25

CTPH (ssdeep):
12288:AkOyMJfst7NRUOP81bcBcreJwVwOPgXjOkeeJ10sae2Qv+AF+VoYRtFZtWbx5qGm:5OyMJfsxNR7PA4BfwZP/keeJ10saeZ2V

Entry address:
0x98CC

Entry point:
55, 8B, EC, 83, C4, CC, 53, 56, 57, 33, C0, 89, 45, F0, 89, 45, DC, E8, FA, 97, FF, FF, E8, 01, AA, FF, FF, E8, 2C, CC, FF, FF, E8, 73, CC, FF, FF, E8, 0A, F3, FF, FF, E8, 71, F4, FF, FF, 33, C0, 55, 68, 76, 9F, 40, 00, 64, FF, 30, 64, 89, 20, 33, D2, 55, 68, 2C, 9F, 40, 00, 64, FF, 32, 64, 89, 22, A1, 14, B0, 40, 00, E8, 9B, FE, FF, FF, E8, 26, FA, FF, FF, 8D, 55, F0, 33, C0, E8, E0, D0, FF, FF, 8B, 55, F0, B8, D8, BD, 40, 00, E8, AB, 98, FF, FF, 6A, 02, 6A, 00, 6A, 01, 8B, 0D, D8, BD, 40, 00, B2, 01, B8...
 
[+]

Entropy:
7.8667

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

Code size:
36 KB (36,864 bytes)

The file winzip.exe has been seen being distributed by the following URL.

http://download2.dobreprogramy.pl/.../x64

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