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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 s-tag.z5x.net.
Publisher:
Bestop-app  (signed and verified)

MD5:
d66b29fb76e06b8fa48f2b0d3f395e22

SHA-1:
a1c305d81b38604634ed5a8b4abda9a713c50183

SHA-256:
c23c550924c9288d4da62ebf0257d206bf814dcffcc7f26593b689929a3f09e9

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 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:
12/26/2024 1:31:34 PM UTC  (today)

Scan engine
Detection
Engine version

Agnitum Outpost
PUA.InstallCore
7.1.1

Avira AntiVirus
ADWARE/InstallCo.zkp
8.3.1.6

AVG
Generic
2016.0.3092

Bkav FE
W32.HfsAdware
1.3.0.6379

Clam AntiVirus
Win.Trojan.Installcore-303
0.98/20530

Comodo Security
Application.Win32.InstallCore.MZIV
22294

Dr.Web
Trojan.Packed.24524
9.0.1.05190

ESET NOD32
Win32/InstallCore.UE potentially unwanted application
7.0.302.0

G Data
Win32.Application.InstallCore.CI
15.5.25

K7 AntiVirus
Unwanted-Program
13.204.16089

Malwarebytes
PUP.Optional.Bestop
v2015.05.31.08

McAfee
Program.CryptInno
18.0.204.0

NANO AntiVirus
Riskware.Win32.InstallCore.dmiypf
0.30.24.1636

Reason Heuristics
PUP.installCore.Installer
15.5.31.20

Sophos
PUA 'Install Core Click run software'
5.14

VIPRE Antivirus
Threat.4150696
40552

File size:
786.5 KB (805,416 bytes)

File type:
Executable application (Win32 EXE)

Bundler/Installer:
installCore (using Inno Setup)

Language:
Language Neutral

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

Digital Signature
Signed by:
Bestop-app

Authority:
COMODO CA Limited

Valid from:
4/2/2014 1:00:00 AM

Valid to:
4/3/2015 12:59:59 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:
6/19/1992 11:22:17 PM

OS version:
1.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
2.25

CTPH (ssdeep):
24576:4FFqc50OKTEQnr9/zCjR76xIOpz6jk4Oz:4n1eOI1RGjF6xIOpGo4

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, BF, A9, FF, FF, E8, 5E, 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:
7.8731

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://s-tag.z5x.net:8001/x/.../?referrer=[REFERRER_URL]

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