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installation.exe

BEST APP

This is the OutBrowse Revenyou installer which bundles offers for additional third party applications that may be unwanted and installed without consent. The application installation.exe by BEST APP 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 rhtag.com.
Publisher:
BEST APP  (signed and verified)

MD5:
dfd5a900640519bf05f1eb83c3ef32d3

SHA-1:
ddf48e870a5b4073e3d9c834749f064b60300f26

SHA-256:
8f4481a21e080f408c25ef9e26905d37555440f760533fba7dd97bc204d17f42

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:
11/23/2024 7:55:58 PM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Outbrowse.BESTAPP.Bundler (M)
16.7.7.16

File size:
568.4 KB (582,016 bytes)

File type:
Executable application (Win32 EXE)

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

Language:
Language Neutral

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

Digital Signature
Signed by:
BEST APP

Authority:
thawte, Inc.

Valid from:
1/3/2015 4:00:00 PM

Valid to:
12/17/2015 3:59:59 PM

Subject:
CN=BEST APP, O=BEST APP, L=Dublin, S=Dublin, C=IE

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

Serial number:
1D0774D8D3A913BED64F71672A861C69

File PE Metadata
Compilation timestamp:
12/5/2009 2:50:52 PM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
6.0

CTPH (ssdeep):
12288:Ra2DngHTVx549xd/rNhwranvxCSAXoXmzB0VL8UsGGwClTnl2wYz:Rgxi9xdbYSAXoC098UpGrS

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:
7.9766

Packer / compiler:
Nullsoft install system v2.x

Code size:
23.5 KB (24,064 bytes)

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

http://rhtag.com/adServe/adClick?ai=08zHTxdapFUc2xR9z/dRW7FlGksiAD7CBOxk8lieUhZOJdhfKeSf9Gq6dKQhpiQTmPRTAYQ4bPvW Ujg8yuvbBd O/ULvuJg/exgmxfiigDvacgCXyr2Bs 15wmKaNS03cM ZWG/.../243kzI 60wGUaQQOu9f gVv56IXFJP4X0KI0kq86MXxY Qi4t37WgFM8TIKkOdBnIRm384 KUHLy0Vow1yd M78Mssq51LEPThB8UEBJ3zk7KjmHmIRFLdknQqTn6MANFvFKsA430fJferO4xS8dcPmtvgNlkkLE B146pQ==&ui=nu7mDOWBqRaBsfUzbDvvoYBVNmK1S2tVmTIMbcPs0iqHWs4orr1t4e8zMAnRMpaR&src=BANNER

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