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flvplayersetup.exe

Bestop-app

The installer utilizes the installCore download manager which may bundle additional offers for various ad-supported toolbars, extensions and utilities. The application flvplayersetup.exe by Bestop-app has been detected as adware by 16 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 www.coolsoftwaredownloads.com.
Publisher:
Bestop-app  (signed and verified)

MD5:
3703354793286665b5cc92034fb666b8

SHA-1:
cb0946584f3c9851d97ffe17f8ad8c4197478d4b

SHA-256:
18beb1ec6ad81da69984eeefd27498b21ec54491b57716b13fd9c216b7c56210

Scanner detections:
16 / 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:
4/26/2024 4:31:03 AM UTC  (today)

Scan engine
Detection
Engine version

Avira AntiVirus
ADWARE/InstallCo.zkp
8.3.1.6

AVG
Adware InstallCore.ADF
2015.0.4355

Bkav FE
W32.HfsAdware
1.3.0.6379

Clam AntiVirus
Win.Trojan.Installcore-227
0.98/20578

Dr.Web
Trojan.Packed.24524
9.0.1.05190

ESET NOD32
Win32/InstallCore.QB potentially unwanted application
7.0.302.0

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

G Data
Win32.Application.InstallCore.CI
15.6.25

K7 AntiVirus
Unwanted-Program
13.205.16287

Malwarebytes
PUP.Optional.InstallCore
v2015.06.18.01

McAfee
Program.CryptInno
17.6.569.0

NANO AntiVirus
Riskware.Win32.InstallCore.dfgmby
0.30.24.2086

Reason Heuristics
PUP.installCore.Installer
15.6.18.9

Sophos
PUA 'Install Core Click run software'
5.15

Vba32 AntiVirus
Malware-Cryptor.InstallCore.gen
3.12.26.4

VIPRE Antivirus
Threat.4150696
40830

File size:
772.9 KB (791,488 bytes)

File type:
Executable application (Win32 EXE)

Bundler/Installer:
installCore (using Inno Setup)

Language:
Turkish (Turkey)

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

Digital Signature
Signed by:
Bestop-app

Authority:
COMODO CA Limited

Valid from:
4/2/2014 3:00:00 AM

Valid to:
4/3/2015 2:59:59 AM

Subject:
CN=Bestop-app, O=Bestop-app, STREET=28A Lillinblam St., L=Tel-Aviv, S=Israel, PostalCode=651307, C=IL

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

Serial number:
00C583348E8D545D9877E51DBB79A3DECB

File PE Metadata
Compilation timestamp:
6/20/1992 1:22:17 AM

OS version:
1.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
2.25

CTPH (ssdeep):
12288:tBqvp3306Dv+aGx1hdg79zMhlqtpF78elVcfdGUV5/9/43IQZEZ4M0OTjw:tBqvFk6z+a4CGOQdGUV5O3I8q0

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:
7.8766

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

Code size:
37 KB (37,888 bytes)

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

http://www.coolsoftwaredownloads.com/flv-player/gcp/.../?dl=1&chnl=mobit2&dp=Z3dXVpZD0xNTc0MjU3OS03MjcyLTRiYzAtOWJmMy1mYzVmM2Q3NTg3NGE

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