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icreinstall_updatestar.exe

UpdateStar GmbH

The installer utilizes InstallCore which may bundle about 3-4 offers for various ad-supported toolbars, extensions and utilities. The application icreinstall_updatestar.exe by UpdateStar GmbH has been detected as a potentially unwanted program by 10 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. It is also typically executed from the user's temporary directory. The file has been seen being downloaded from www.updatestar.com. While running, it connects to the Internet address os.solvefile.com on port 80 using the HTTP protocol.
Publisher:
UpdateStar GmbH  (signed and verified)

MD5:
8aa7678d58239c1b1948fbda30fb9aa5

SHA-1:
8d671cd583e66a98a4f3cb1875c72db6cf85f5df

SHA-256:
b466bfeaa068000c801c7fe68b84fcb560045670d7114d0f1950471db4fbb9e2

Scanner detections:
10 / 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 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:
4/27/2024 10:51:43 PM UTC  (today)

Scan engine
Detection
Engine version

Avira AntiVirus
ADWARE/InstallCore.Gen7
7.11.129.130

Dr.Web
Trojan.KillProc.30849
9.0.1.062

ESET NOD32
Win32/InstallCore.JE.gen (variant)
8.9383

Malwarebytes
PUP.Optional.Installcore
v2014.03.03.11

McAfee
Artemis!8AA7678D5823
5600.7203

Reason Heuristics
PUP.UpdateStarGmbH.W
14.3.3.11

Rising Antivirus
PE:Malware.XPACK-LNR/Heur!1.5594
23.00.65.14301

Trend Micro House Call
TROJ_GEN.F47V0131
7.2.62

Vba32 AntiVirus
Downware.InstallCore
3.12.24.3

VIPRE Antivirus
Adware.Win32.InstallCore.ba
26158

File size:
669 KB (685,056 bytes)

File type:
Executable application (Win32 EXE)

Bundler/Installer:
installCore (using Inno Setup)

Common path:
C:\users\{user}\appdata\local\temp\icreinstall_updatestar.exe

Digital Signature
Signed by:
UpdateStar GmbH

Authority:
COMODO CA Limited

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

Valid to:
1/3/2016 1:59:59 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 1:22:17 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 icreinstall_updatestar.exe has been seen being distributed by the following URL.

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

The executing file has been seen to make the following network communications in live environments.

TCP (HTTP):
Connects to os.solvefile.com  (207.189.109.121:80)

TCP (HTTP):
Connects to cdnus.solvefile.com  (207.189.109.121:80)

TCP (HTTP):
Connects to cdneu.webfilescdn.com  (65.254.40.36:80)

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