winrar.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 winrar.exe by dobreprogramy sp. z o.o has been detected as adware by 22 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 installer is marketed through download protals and search ads as WinRAR archiver but will also install additional software offers which include adware, PUPs and browser toolbars.
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Publisher:
dobreprogramy sp. z o.o.  (signed and verified)

MD5:
bc2e3a0507adba9d661d7dadc8c19ad8

SHA-1:
a91101b1ee8ba79d5594c22e81932b4bc2129f3c

SHA-256:
8024dbfd5fd43ed468383fb785ca4b6735310b7fbe7c2090153a3718ded919c5

Scanner detections:
22 / 68

Status:
Adware

Explanation:
Bundles additional software, mostly toolbars and other potentially unwanted applications using the Vittalia monitization installer.

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:
12/7/2016 11:37:01 AM UTC  (today)

Scan engine
Detection
Engine version

Agnitum Outpost
PUA.InstallCore
7.1.1

Avira AntiVirus
7.11.125.26

AVG
MalSign.InstallC
2015.0.3448

Bkav FE
W32.Clodd1a.Trojan
1.3.0.4613

Comodo Security
ApplicUnwnt
17963

Dr.Web
Adware.InstallCore.133
9.0.1.0161

ESET NOD32
Win32/InstallCore.CU (variant)
8.9288

Fortinet FortiGate
Riskware/Vittalia
6/10/2014

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

K7 AntiVirus
Unwanted-Program
13.175.11064

K7 Gateway Antivirus
Unwanted-Program
13.175.11064

Malwarebytes
PUP.Optional.Dobreprogramy
v2014.06.10.10

McAfee
Artemis!C9DC5AD4C822
5600.7104

McAfee Web Gateway
Artemis!C9DC5AD4C822
7.7104

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

Reason Heuristics
PUP.dobreprogramyspzoo.N
14.6.10.10

Rising Antivirus
PE:Malware.XPACK-LNR/Heur!1.5594
23.00.65.14608

The Hacker
Trojan/Kryptik.bwjc
6.8.0.6.161

Trend Micro House Call
TROJ_GEN.F47V1229
7.2.161

Vba32 AntiVirus
3.12.24.3

VIPRE Antivirus
Adware.Win32.InstallCore.ba
26158

Remove winrar.exe - Powered by Reason Core Security
File size:
651 KB (666,648 bytes)

File type:
Executable application (Win32 EXE)

Bundler/Installer:
installCore (using Inno Setup)

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

Digital Signature
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:elkOyMJfsGMmOjLwy9jhZmUJRkRGd4rxS7FyYwX/jx54o5DOGVHaEd58Vm8qAmm/:fOyMJfsSQwyNh8leUuoJdHoVm8qfYVS

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 winrar.exe has been seen being distributed by the following URL.

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