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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:
96da36debafbd04816c6fab3edaafea6

SHA-1:
6fd74a3031f2267a88c8bbc04a5a689b2000113b

SHA-256:
0e25bce6970d6877ad7a6b23cbdc20f8b385988584c2b3bf5b133fc6106f1d4c

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:
11/5/2024 8:21:02 PM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Outbrowse.BESTAPP.Bundler (M)
16.7.14.1

File size:
569.8 KB (583,448 bytes)

File type:
Executable application (Win32 EXE)

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

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

Digital Signature
Signed by:
BEST APP

Authority:
thawte, Inc.

Valid from:
1/4/2015 1:00:00 AM

Valid to:
12/18/2015 12:59:59 AM

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 11:50:52 PM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
6.0

CTPH (ssdeep):
12288:9hzF90g8TfWKzjfQADweTzc7GxVVoXCw064eNdsXDbya3:9JF938TfWKnfNxTzc7kVV0n4hyE

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...
 
[+]

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=08zHTxdapFV3Hu7LExqDxV61IgH86IynDrcjUzPkQ4N88J8dYUrnNjVGdbQStuZGUlQHhwIynOEN 18qKWZmKi8GCgVQmT2g3ZBEh7lphxL4pdY e/iTnmjRWNAOSW2SXJPhqHyUFKnXAdt0V1 lNkmAt 7Qus8gY83Erl/KNvPfA BbN9X7qnPnf5LTvHSP7fCfT2x3Gt75w1ksAx6i4xhw==&ui=VD21hbC00u5ZdMtrVdxxTwcsWc8 Vo/0lA4kOHjhy4bXzQFOqo/.../3kG&src=BANNER

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