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4dd7fe35_stp.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 4dd7fe35_stp.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. It is also typically executed from the user's temporary directory. The file has been seen being downloaded from static.updatestar.net and multiple other hosts.
Publisher:
UpdateStar GmbH  (signed and verified)

MD5:
92b0e2f268e30720f9c446627e9cddbc

SHA-1:
ce7f5110de6463883c5d4dc79710d40ffed6c82f

SHA-256:
838ef25757d169d7b9771bc276948ef5c04c38cb1507db7a67f84dff3175d791

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 'download manager' is also considered bundleware, a utility designed to download software (possibly legitimate or opensource) and bundle it with a number of optional offers including ad-supported utilities, toolbars, shopping comparison tools and browser extensions.

Analysis date:
4/23/2024 1:08:19 PM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.installCore.UpdateStar (M)
16.2.14.4

File size:
142.8 KB (146,200 bytes)

File type:
Executable application (Win32 EXE)

Bundler/Installer:
installCore (using Nullsoft Install System)

Common path:
C:\users\{user}\appdata\local\temp\{random}.tmp\4dd7fe35_stp.exe

Digital Signature
Signed by:
UpdateStar GmbH

Authority:
COMODO CA Limited

Valid from:
1/12/2016 4:00:00 AM

Valid to:
1/12/2019 3:59:59 AM

Subject:
CN=UpdateStar GmbH, O=UpdateStar GmbH, STREET=Gneisenaustr. 44/45, L=Berlin, S=Berlin, PostalCode=10961, C=DE

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

Serial number:
00FBADF674BC78E279821FBDF9D937DF06

File PE Metadata
Compilation timestamp:
2/24/2012 11:19:59 PM

OS version:
5.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
10.0

CTPH (ssdeep):
3072:kweqOYEUXPnt45nibdOxEXnT9Iv4YHmEPNyCfgofT72jxW6kq+l:VEUXVMihBnOvvdAmVfPMxWPq

Entry address:
0x39E3

Entry point:
81, EC, D4, 02, 00, 00, 53, 55, 56, 57, 6A, 20, 33, ED, 5E, 89, 6C, 24, 18, C7, 44, 24, 10, D8, 91, 40, 00, 89, 6C, 24, 14, FF, 15, 30, 80, 40, 00, 68, 01, 80, 00, 00, FF, 15, B8, 80, 40, 00, 55, FF, 15, C0, 82, 40, 00, 6A, 08, A3, B8, 2E, 47, 00, E8, 37, 2A, 00, 00, 55, 68, B4, 02, 00, 00, A3, D0, 2D, 47, 00, 8D, 44, 24, 38, 50, 55, 68, 1C, 93, 40, 00, FF, 15, 84, 81, 40, 00, 68, 04, 93, 40, 00, 68, C0, AD, 46, 00, E8, 19, 27, 00, 00, FF, 15, B4, 80, 40, 00, 50, BF, A0, 30, 4C, 00, 57, E8, 07, 27, 00, 00...
 
[+]

Packer / compiler:
Nullsoft install system v2.x

Code size:
28 KB (28,672 bytes)

The file 4dd7fe35_stp.exe has been seen being distributed by the following 2 URLs.

http://static.updatestar.net/dl/updatestar/.../updatestardrivers.exe

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

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