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install-flashplayer.exe

OUTBROWSE

This is the OutBrowse Revenyou installer which bundles offers for additional third party applications that may be unwanted and installed without consent. The application install-flashplayer.exe by OUTBROWSE 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 installer is marketed through download protals and search ads as the free Adobe Flash Player but will also install additional software offers which include adware, PUPs and browser toolbars.
Publisher:
OUTBROWSE  (signed and verified)

MD5:
08f2ebd5528e1a03a3723e667d1c0be4

SHA-1:
27a4c6e609b1f1108c86ff72c88318e1d8c681e9

SHA-256:
f1e58826f087ca789aee9df267c830cd5c14bed7687017ed7ca3379baaa216a2

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:
4/25/2024 7:14:15 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Outbrowse (M)
16.8.6.2

File size:
707.7 KB (724,712 bytes)

File type:
Executable application (Win32 EXE)

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

Common path:
C:\users\{user}\downloads\install-flashplayer.exe

Digital Signature
Signed by:
OUTBROWSE

Authority:
COMODO CA Limited

Valid from:
4/7/2014 3:00:00 AM

Valid to:
4/8/2015 2:59:59 AM

Subject:
CN=OUTBROWSE, O=OUTBROWSE, STREET=Bialik Number: 143, L=Ramat Gan, S=Israel, PostalCode=5252337, C=IL

Issuer:
CN=COMODO Code Signing CA 2, O=COMODO CA Limited, L=Salford, S=Greater Manchester, C=GB

Serial number:
00A5F03C3A375C11FD6C1C160EE8BFF923

File PE Metadata
Compilation timestamp:
12/6/2009 1:50:52 AM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
6.0

CTPH (ssdeep):
12288:ASlmv05Fa7QsMHYVgAfFPmwQg8lfUDJkvqGzj5FQ8QDb3dnDwAr/o/mNe3akx80N:ASKQs7Vg6F+PfUDK95i8QDDphouA3akH

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:
7.9467

Packer / compiler:
Nullsoft install system v2.x

Code size:
23.5 KB (24,064 bytes)

The file install-flashplayer.exe has been seen being distributed by the following URL.

http://mbttd.com/engine/.../cxc3VwcGx5X3BsYXRmb3JtX2FjY291bnRfaWQ9NDA1JnN1cHBseV9wbGF0Zm9ybV9pZD00NzUmbGluZV9pdGVtX2lkPTcxNjI?ext_click_id=BRUhfP9GurfRcRbgFRm-tlqKNF6-auXjVn5kw1_t7vhF03_BMyT9YQlAquEJ6WjwaKDmQmOmiZtSSTLdo4bk2qlYW42y7YttHGlNjHjiZphiS2f-aQNipz6-RFWo4BYQBDeMJYz455JqTUNdYpWS2ujL9UO-_uVQBOCu4JpvJzhF88_bg-CNDkPICFhYpf_BlbZ6eN2lzdhEbAIijjHDtAo0HxABhCdXluQmloV11pb0Q3lf081BvUyXTzsWsTRCGzHZD_LmCRX3P9y_m05WcQBq7vc_psB8gCE9qrNm2yHoSXG0K8MGscbadmkdfegXAdJvPw6Dcy9DGL1jyOOnO5elofgLWvPjbPOI-j5Ew8u-tto5N2SPp83qr-8QPIpjMe0ovvp5ieE&sub_id_1=MATad2knew

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