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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:
54c12849e2be2b3970b72dfc7edfee0a

SHA-1:
7eb99be21ff6f2a5bfe442117f6b4a80e8bb19b2

SHA-256:
4a5ebd6041a260a37afefcde8604c71faa864966ecf2f0c6cdac0fd965bf8010

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 an installer which may bundle legitimate applications with offers for additional 3rd-party applications that may be unwanted by the user. While the installer contains an 'opt-out' feature this is not set be defult and is usually overlooked.

Analysis date:
5/9/2024 1:03:07 PM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Outbrowse.BESTAPP.Bundler (M)
16.7.13.6

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:
1/4/2015 5:30:00 AM

Valid to:
12/18/2015 5:29:59 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:
12/6/2009 4:20:52 AM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
6.0

CTPH (ssdeep):
12288:li2DngHTVx549xd/rNhwranvxCSAXoXmzB0VL8UsGGwClTnl2wYL:loxi9xdbYSAXoC098UpGro

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=08zHTxdapFXULz0Q gfum3I9P 4044lXMEtUbBjfGsxsU8aOT BynatWwbPBgE4c51/85WYhPbHx OmJhErVyG67kYw8ogoXGazQ1WJ8OssoTBIyakaQuKAULp3jzDGTLhh11MNiP6F8Q4Q2d7gqWaKNI lvsjCmgYMK2vfLIlzsGELpnJ8WtjsMupy0st3WamzU/klEEBb7OyKY4t/d2oxIy7zwhNi7ecxEil 4boaG7 y7vrHD80Elec6MlRr6u9Ili5yav89/.../00R8TBbZ2GNAy3mtI=&ui=btR96rz1dnl0fPeyhOEVmFY37AsT2AewDMRlDug0DrYdpXA6QSP5ls57CcOgOTCg&src=BANNER

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