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updatestar.exe

UpdateStar GmbH

The installer utilizes the installCore download manager which may bundle additional offers for various ad-supported toolbars, extensions and utilities. The application updatestar.exe by UpdateStar GmbH has been detected as a potentially unwanted program by 28 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.updatestar.com.
Publisher:
UpdateStar GmbH  (signed and verified)

MD5:
8f356f52d45506dc921a252289fb9739

SHA-1:
7f6c9ce183d832da3fda995b15c2e500b45d5a82

SHA-256:
47fb109ede4e1ddb7050d2145f614587c15153eb806e7ade0a7b65148fbcf02c

Scanner detections:
28 / 68

Status:
Potentially unwanted

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 1:42:49 AM UTC  (today)

Scan engine
Detection
Engine version

Agnitum Outpost
PUA.InstallCore
7.1.1

Avira AntiVirus
ADWARE/InstallCore.Gen7
7.11.128.170

avast!
Win32:Adware-gen [Adw]
2014.9-150329

AVG
MalSign.InstallC
2016.0.3156

Baidu Antivirus
Adware.Win32.InstallCore
4.0.3.15329

Clam AntiVirus
Win.Trojan.Installcore-226
0.98/19479

Comodo Security
Application.Win32.Installcore.UPT
18186

Dr.Web
Trojan.MulDrop5.10078
9.0.1.088

Emsisoft Anti-Malware
Adware.Generic.552604
8.15.03.29.09

ESET NOD32
Win32/Injected.F trojan
7.0.302.0

Fortinet FortiGate
Riskware/InstallCore_JE
3/29/2015

F-Prot
W32/A-89dd4083
v6.4.7.1.166

herdProtect (fuzzy)
variant of autodesk-dwf-viewer.exe (PUP)
2015.7.3.16

IKARUS anti.virus
Win32.AdWare
t3scan.2.2.29

K7 AntiVirus
Unwanted-Program
13.176.11913

Malwarebytes
PUP.Optional.Installcore
v2015.03.29.09

McAfee
RDN/Generic PUP.x!c2v
5600.6812

NANO AntiVirus
Riskware.Win32.InstallCore.dmiyir
0.30.0.65070

nProtect
Adware/W32.Agent.685056
14.03.05.01

Panda Antivirus
Trj/dtcontx.L
15.03.29.09

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

Reason Heuristics
PUP.Installer.UpdateStarGmbH
15.3.29.9

Rising Antivirus
PE:Malware.XPACK-LNR/Heur!1.5594
23.00.65.15327

Sophos
Install Core
4.97

Trend Micro House Call
TROJ_GEN.F47V0303
7.2.88

Trend Micro
ADW_INSTALLCORE
10.465.29

Vba32 AntiVirus
Downware.InstallCore
3.12.26.0

VIPRE Antivirus
InstallCore.b
26086

File size:
669 KB (685,056 bytes)

File type:
Executable application (Win32 EXE)

Bundler/Installer:
installCore (using Inno Setup)

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

Digital Signature
Signed by:
UpdateStar GmbH

Authority:
COMODO CA Limited

Valid from:
1/2/2013 1:00:00 AM

Valid to:
1/3/2016 12:59:59 AM

Subject:
CN=UpdateStar GmbH, O=UpdateStar GmbH, STREET=Hauptstraße 20, L=Berlin, S=Berlin, PostalCode=10827, C=DE

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

Serial number:
009ED227324380B40DDE36C8D31A33831F

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):
12288:7vptvVqpPXo+HrdkNuX3MmmJalSXGUhjvmWLVGozhj/OuP/th:7vXvV0ddkz82vJGozhj/3h

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...
 
[+]

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

Code size:
37 KB (37,888 bytes)

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

http://www.updatestar.com/.../1490635

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