updatestar-setup.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-setup.exe by UpdateStar GmbH has been detected as a potentially unwanted program by 12 anti-malware scanners. The program is a setup application that uses the installCore installer. It is also typically executed from an Internet Explorer cache folder. The file has been seen being downloaded from client.updatestar.com.
Publisher:
UpdateStar GmbH  (signed and verified)

MD5:
223d0a480169d589185aaea8892f63bb

SHA-1:
38dc546e4c66e9741c626f164b7d45bd28b673e7

SHA-256:
e6873e3f5423fe95dc7625c19cb910f9347b06a9120e7fab893bf5cb85f15ac8

Scanner detections:
12 / 68

Status:
Potentially 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:
3/6/2021 12:27:32 AM UTC  (today)

Scan engine
Detection
Engine version

avast!
NSIS:Adware-OH [Adw]
2014.9-141119

Baidu Antivirus
Adware.Win32.DownloadAdmin
4.0.3.141119

Comodo Security
Application.Win32.Agent.OCK
20063

Dr.Web
Adware.Downware.2220
9.0.1.0323

ESET NOD32
Win32/DownloadAdmin
8.10712

Fortinet FortiGate
Riskware/DownloadAdmin
11/19/2014

F-Secure
Adware:W32/WebInstallBundle
11.2014-19-11_4

K7 AntiVirus
Trojan
13.185.13993

McAfee
RDN/Downloader.a!rk
5600.6942

Reason Heuristics
PUP.Installer.UpdateStarGmbH.Q
14.11.19.5

Sophos
Generic PUA DI
4.98

VIPRE Antivirus
DownloadAdmin
34732

File size:
791 KB (810,000 bytes)

File type:
Executable application (Win32 EXE)

Bundler/Installer:
installCore (using Nullsoft Install System)

Common path:
C:\users\{user}\appdata\local\microsoft\windows\temporary internet files\content.ie5\{random}\updatestar-setup.exe

Digital Signature
Signed by:

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:
6/22/2012 8:07:51 PM

OS version:
5.1

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
10.0

CTPH (ssdeep):
12288:mxpJ/xOJ5iQ/817fkZZ3Yzboo9RM6RS3r8Qksh0+vhd00hx+9BWEXS3BNmW:Sppxs5iQ/817L0o9q6RSg0d0YJEi3BNV

Entry address:
0x333B

Entry point:
81, EC, 80, 01, 00, 00, 53, 55, 56, 33, DB, 57, 89, 5C, 24, 18, C7, 44, 24, 10, B0, 73, 40, 00, 33, F6, C6, 44, 24, 14, 20, FF, 15, 30, 70, 40, 00, 68, 01, 80, 00, 00, FF, 15, C0, 70, 40, 00, 53, FF, 15, 88, 72, 40, 00, 6A, 08, A3, B8, 3C, 42, 00, E8, 2C, 25, 00, 00, 53, 68, 60, 01, 00, 00, A3, C0, 3B, 42, 00, 8D, 44, 24, 38, 50, 53, 68, 43, 74, 40, 00, FF, 15, 64, 71, 40, 00, 68, 38, 74, 40, 00, 68, C0, 33, 42, 00, E8, 1D, 24, 00, 00, FF, 15, BC, 70, 40, 00, 50, BF, 00, 90, 42, 00, 57, E8, 0B, 24, 00, 00...
 
[+]

Packer / compiler:
Nullsoft install system v2.x

Code size:
23 KB (23,552 bytes)

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

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