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kbpianost.exe

Cyberservices B.V.

This is the OutBrowse Revenyou installer which bundles offers for additional third party applications that may be unwanted and installed without consent. The application kbpianost.exe by Cyberservices B.V has been detected as adware 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 OutBrowse Revenyou installer. The file has been seen being downloaded from www.soft-ware.net.
Publisher:
Cyberservices B.V.  (signed and verified)

MD5:
4d441dd548ebb4dcd30bd0b342e1aa0d

SHA-1:
b37a42e979db72a7f1849c81355e00f3bd5ccdcb

SHA-256:
39531bf87eeca2e62b06f33a8f6f8d511d1ec13880b305983b722008e7980031

Scanner detections:
1 / 68

Status:
Adware

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 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:
5/4/2024 7:55:55 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Outbrowse (M)
16.8.4.20

File size:
602.4 KB (616,864 bytes)

File type:
Executable application (Win32 EXE)

Bundler/Installer:
OutBrowse Revenyou

Language:
English (United States)

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

Digital Signature
Signed by:
Cyberservices B.V.

Authority:
COMODO CA Limited

Valid from:
2/10/2014 1:00:00 AM

Valid to:
2/11/2016 12:59:59 AM

Subject:
CN=Cyberservices B.V., O=Cyberservices B.V., STREET=Keizersgracht 62-64 NL, L=Amsterdam, S=Nordholland, PostalCode=1015CS, C=NL

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

Serial number:
797CAC4561E8B8B21910CD01E0002669

File PE Metadata
Compilation timestamp:
1/14/2015 5:42:25 PM

OS version:
5.1

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
10.0

CTPH (ssdeep):
12288:LID1N/OdE7zkN0TgM6hTV960Yu6OY3P0bxJkBzcZMW9+/6RuVX1SNG997rEWcYuJ:sfB8yTgM6hTV960Yu6OYBBzcZMW9+/6P

Entry address:
0x24831

Entry point:
E8, BC, 66, 00, 00, E9, 89, FE, FF, FF, 8B, FF, 55, 8B, EC, 53, 56, 8B, F1, 33, DB, 3B, F3, 75, 16, E8, 08, 1C, 00, 00, 6A, 16, 5E, 89, 30, E8, AC, 1B, 00, 00, 8B, C6, E9, 8F, 00, 00, 00, 57, 39, 5D, 08, 77, 13, E8, EC, 1B, 00, 00, 6A, 16, 5E, 89, 30, E8, 90, 1B, 00, 00, 8B, C6, EB, 75, 33, C9, 39, 5D, 10, 88, 1E, 0F, 95, C1, 41, 39, 4D, 08, 77, 09, E8, C9, 1B, 00, 00, 6A, 22, EB, DB, 8B, 4D, 0C, 83, C1, FE, 83, F9, 22, 77, C9, 8B, CE, 39, 5D, 10, 74, 0B, 33, DB, 43, C6, 06, 2D, 8D, 4E, 01, F7, D8, 8B, F9...
 
[+]

Code size:
327 KB (334,848 bytes)

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

http://www.soft-ware.net/getfile/kb-piano/.../kbpianost.exe

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