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adobe_flash_setup.exe.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 adobe_flash_setup.exe.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 serv.down4desk.com.
Publisher:
best App  (signed and verified)

MD5:
19a4c6e9546de908a6a410a62117f217

SHA-1:
4cb42ae5aa621456c1362be61f1b6219414a0f55

SHA-256:
7f63f954c99257bd016936e9fa89c4939552082afa12cb81507bd4b6c17931ec

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:
11/1/2024 12:27:03 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Outbrowse.bestApp.Bundler (M)
16.4.30.9

File size:
574.4 KB (588,216 bytes)

File type:
Executable application (Win32 EXE)

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

Language:
Language Neutral

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

Digital Signature
Signed by:
best App

Authority:
thawte, Inc.

Valid from:
1/16/2015 6:00:00 PM

Valid to:
12/17/2015 5:59:59 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:
561F7A28F0603E5A446627646F1156B8

File PE Metadata
Compilation timestamp:
12/5/2009 4:50:52 PM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
6.0

CTPH (ssdeep):
12288:5ymdXyaab7/lz9BriZbdw69Q5RbLTUVpcU7XYpYz2qz:5Riag7/l5BezwvNu7yAt

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:
7.9670

Packer / compiler:
Nullsoft install system v2.x

Code size:
23.5 KB (24,064 bytes)

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

http://serv.down4desk.com/TIMESTAMP/get?p=18940&d=25092&l=24278&n=1&productname=Download Manager&d1=0&S=14217029911494,2196,US,ac_p13,558,obn,68,Chrome,faf6c438bd9165c838aa83a327e5ce71,cid=11533176811421702989&pubid=323289&exeurl=http://.../install_flash_player_13_plugin.exe&dynamicname=Adobe Flash Player&filename=adobe_flash_setup.exe

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