installer.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 installer.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 an Internet Explorer cache folder. The file has been seen being downloaded from getr.file8desktop.info.
Publisher:
KLHDS  (signed by Best Install tLl)

Product:
KLHDS

Version:
2172.151215.1194.4419

MD5:
7e46f521dea435bf4f8c5641e80a5ac8

SHA-1:
9a0fa81f21ba9c4d7fa741a041bb6eec412578ba

SHA-256:
46fdbcfb12fdb7c2a1b1132b0cf7507001e17b776c1eefdd003488bf062430ff

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:
5/17/2024 6:56:49 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Outbrowse.BestInstalltLl (M)
16.2.3.3

File size:
325.4 KB (333,240 bytes)

Product version:
2172.151215.1194.4419

Copyright:
KLHDS

Trademarks:
KLHDS

File type:
Executable application (Win32 EXE)

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

Language:
Language Neutral

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

Digital Signature
Authority:
thawte, Inc.

Valid from:
11/24/2015 1:00:00 AM

Valid to:
1/27/2017 12:59:59 AM

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:
55102FDA18C16EE5D8DDEDF2A1342F5E

File PE Metadata
Compilation timestamp:
12/5/2009 11:52:12 PM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
6.0

CTPH (ssdeep):
6144:JFJ0Idz2JwyqP8c6+yLggqP7BvdqjMczj252mVdIRN68JYqZXjDjzHWGkQ1SPJob:pd6EP8c6+y3qP7BVqjMczyIRNZDzWGfv

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, 1C, 45, 00, E8, F1, 2B, 00, 00, A3, 64, 1B, 45, 00, 53, 8D, 44, 24, 34, 68, 60, 01, 00, 00, 50, 53, 68, 98, 37, 43, 00, FF, 15, 58, 71, 40, 00, 68, 54, 91, 40, 00, 68, 60, DB, 44, 00, E8, A4, 28, 00, 00, FF, 15, AC, 70, 40, 00, BF, 00, A0, 47, 00, 50, 57, E8, 92, 28, 00, 00...
 
[+]

Packer / compiler:
Nullsoft install system v2.x

Code size:
23.5 KB (24,064 bytes)

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

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