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preconfig.exe

Best InstaLL TLL

This is the OutBrowse Revenyou installer which bundles offers for additional third party applications that may be unwanted and installed without consent. The application preconfig.exe by Best InstaLL TLL 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. It is also typically executed from the user's temporary directory.
Publisher:
Best InstaLL TLL  (signed and verified)

MD5:
392ac57a3878c11e728f61f5467d5763

SHA-1:
3480359f5f38c69ad867251f89f76cecf5a2f2e5

SHA-256:
682adbf957764d427f19b7bd5b0f03e0f08db21d150e149cfddfa9986ab50759

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 '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:
12/29/2024 12:23:54 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Outbrowse.BestInst.Bundler (M)
16.6.4.15

File size:
580.4 KB (594,344 bytes)

File type:
Executable application (Win32 EXE)

Bundler/Installer:
OutBrowse Revenyou (using Nullsoft Install System)

Language:
Language Neutral

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

Digital Signature
Signed by:
Best InstaLL TLL

Authority:
thawte, Inc.

Valid from:
2/7/2015 7:00:00 PM

Valid to:
1/27/2016 6:59:59 PM

Subject:
CN=Best InstaLL TLL, O=Best InstaLL TLL, L=Dublin, S=Dublin, C=IE

Issuer:
CN=thawte SHA256 Code Signing CA, O="thawte, Inc.", C=US

Serial number:
79EB8D96C670B73CE1061168830552F3

File PE Metadata
Compilation timestamp:
12/5/2009 5:50:52 PM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
6.0

CTPH (ssdeep):
12288:HVXM6fp/W+b9R+DUR8HmznuBQRlLjr6L37uQ18:Hu6fb9RcURWmznuBQRRr6nuD

Entry address:
0x30FA

Entry point:
81, EC, 80, 01, 00, 00, 53, 55, 56, 33, DB, 57, 89, 5C, 24, 18, C7, 44, 24, 10, 60, 91, 40, 00, 33, F6, C6, 44, 24, 14, 20, FF, 15, 30, 70, 40, 00, 68, 01, 80, 00, 00, FF, 15, B0, 70, 40, 00, 53, FF, 15, 7C, 72, 40, 00, 6A, 08, A3, 18, EC, 42, 00, E8, F1, 2B, 00, 00, A3, 64, EB, 42, 00, 53, 8D, 44, 24, 34, 68, 60, 01, 00, 00, 50, 53, 68, 98, 8F, 42, 00, FF, 15, 58, 71, 40, 00, 68, 54, 91, 40, 00, 68, 60, E3, 42, 00, E8, A4, 28, 00, 00, FF, 15, AC, 70, 40, 00, BF, 00, 40, 43, 00, 50, 57, E8, 92, 28, 00, 00...
 
[+]

Entropy:
7.9661

Packer / compiler:
Nullsoft install system v2.x

Code size:
23.5 KB (24,064 bytes)

Remove preconfig.exe - Powered by Reason Core Security
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