home

pestudio.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 pestudio.exe by dobreprogramy sp. z o.o has been detected as adware by 18 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 download4.dobreprogramy.pl.
Publisher:
dobreprogramy sp. z o.o.  (signed and verified)

MD5:
bbbe2c4dcd9419e735f2e1ca16af0fdd

SHA-1:
948666ad0008a282acbc345a0ba51e74904bb563

SHA-256:
682de2d9c48deea4ea605f7243cc250e3f8426c308d8d25aa2b1af7ba7b6bb0c

Scanner detections:
18 / 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:
4/23/2024 8:20:31 PM UTC  (today)

Scan engine
Detection
Engine version

Agnitum Outpost
PUA.InstallCore
7.1.1

Avira AntiVirus
ADWARE/InstallCore.Gen7
7.11.115.36

AVG
MalSign.InstallC
2015.0.3371

Comodo Security
Application.Win32.Agent.AM
17316

Dr.Web
Trojan.Packed.24524
9.0.1.05190

ESET NOD32
Win32/InstallCore.CH potentially unwanted application
7.0.302.0

Fortinet FortiGate
Riskware/InstallCore
8/25/2014

F-Prot
W32/InstallCore.R3.gen
v6.4.7.1.166

K7 AntiVirus
Unwanted-Program
13.176.11907

Malwarebytes
PUP.Optional.InstallCore.A
v2014.08.25.03

McAfee
Artemis!7ADBB7F119BB
5600.7027

Qihoo 360 Security
Win32/Virus.Adware.94c
1.0.0.1015

Reason Heuristics
PUP.dobreprogramyspzoo.P
14.8.26.2

Rising Antivirus
PE:Malware.XPACK-LNR/Heur!1.5594
23.00.65.14823

Sophos
Install Core Click run software
4.95

Trend Micro House Call
TROJ_GEN.F47V1024
7.2.237

Vba32 AntiVirus
Downware.InstallCore
3.12.24.3

VIPRE Antivirus
InstallCore.b
23632

File size:
669.2 KB (685,248 bytes)

File type:
Executable application (Win32 EXE)

Bundler/Installer:
installCore (using Inno Setup)

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

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

Authority:
COMODO CA Limited

Valid from:
6/6/2013 2:00:00 AM

Valid to:
6/7/2014 1:59:59 AM

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:ayMJfsGnYrKnA0KSJCvBMuBKCdqQvI4T/6KaMbeWZ0auAikIp3Hl1PJIEcKb68ng:ayMJfsjr+8S4djCKDKoKkIp3+r61

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...
 
[+]

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

Code size:
36 KB (36,864 bytes)

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

http://download4.dobreprogramy.pl/.../x86

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