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updatestar_enu_installer.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_enu_installer.exe by UpdateStar GmbH has been detected as a potentially unwanted program by 1 anti-malware scanner with very strong indications that the file is a potential threat. The program is a setup application that uses the installCore installer. The file has been seen being downloaded from client.updatestar.com.
Publisher:
UpdateStar GmbH  (signed and verified)

MD5:
e57d1c3ec04485dfebd04b97d811819b

SHA-1:
666778f328e81c48c90db8c3fc476c3be0809339

SHA-256:
4cc36ecf14474324dee0f39da111b768332e6317981d55e69ebfb41f503409d2

Scanner detections:
1 / 68

Status:
Potentially unwanted

Note:
Our current pool of anti-malware engines have not currently detected this file, however based on our own detection heuristics we feel that this file is unwanted.

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:
4/25/2024 1:31:19 PM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.UpdateStarGmbH.Y
14.5.27.11

File size:
458.4 KB (469,424 bytes)

File type:
Executable application (Win32 EXE)

Bundler/Installer:
installCore

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

Digital Signature
Signed by:
UpdateStar GmbH

Authority:
COMODO CA Limited

Valid from:
1/2/2013 8:00:00 AM

Valid to:
1/3/2016 7:59:59 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:
5/15/2014 1:12:40 AM

OS version:
5.1

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
12.0

CTPH (ssdeep):
12288:MXRfo2cxWnS9RMVJzgKLBjey+KQUaE2tEl+HLLTufCZYTBe:MX/PS9RMVBgKLj7QUaE2m+HaB8

Entry address:
0xF3BD0

Entry point:
60, BE, 00, 50, 48, 00, 8D, BE, 00, C0, F7, FF, 57, 83, CD, FF, EB, 10, 90, 90, 90, 90, 90, 90, 8A, 06, 46, 88, 07, 47, 01, DB, 75, 07, 8B, 1E, 83, EE, FC, 11, DB, 72, ED, B8, 01, 00, 00, 00, 01, DB, 75, 07, 8B, 1E, 83, EE, FC, 11, DB, 11, C0, 01, DB, 73, 0B, 75, 28, 8B, 1E, 83, EE, FC, 11, DB, 72, 1F, 48, 01, DB, 75, 07, 8B, 1E, 83, EE, FC, 11, DB, 11, C0, EB, D4, 01, DB, 75, 07, 8B, 1E, 83, EE, FC, 11, DB, 11, C9, EB, 52, 31, C9, 83, E8, 03, 72, 11, C1, E0, 08, 8A, 06, 46, 83, F0, FF, 74, 75, D1, F8, 89...
 
[+]

Entropy:
7.9116

Packer / compiler:
UPX 2.90LZMA]

Code size:
444 KB (454,656 bytes)

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

http://client.updatestar.com/files/.../UpdateStar_ENU_installer.exe

Remove updatestar_enu_installer.exe - Powered by Reason Core Security
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