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mustafa.exe

Google Chrome

Download Assistant

This is part of the Air Installer, a download manager which bundles applications with offers for additional 3rd party software, mostly unwanted adware, and may be installed with minimal consent. The application mustafa.exe by Download Assistant 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 AirInstaller Download Manager installer. The file has been seen being downloaded from files.free-browser.net.
Publisher:
Download Assistant  (signed and verified)

Product:
Google Chrome

Version:
3.0.0.130

MD5:
2d6e37f97406fec7eb5abc5ab7d3e330

SHA-1:
da85abb31faa06bdcb03834d8c93e95b2f8ca163

SHA-256:
db0e4f3d715469c311ac53ab68a531063f64bb0adec5bc271793493191ed7964

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:
12/26/2024 12:06:05 PM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Air Software.Download.Bundler (M)
16.7.10.14

File size:
1.1 MB (1,132,032 bytes)

Product version:
3.0.0.130

Copyright:
(c) Download Assistant

File type:
Executable application (Win32 EXE)

Bundler/Installer:
AirInstaller Download Manager

Language:
Language Neutral

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

Digital Signature
Signed by:
Download Assistant

Authority:
Symantec Corporation

Valid from:
7/28/2015 5:00:00 AM

Valid to:
7/28/2016 4:59:59 AM

Subject:
CN=Download Assistant, O=Download Assistant, L=Victoria, S=British Columbia, C=CA

Issuer:
CN=Symantec Class 3 SHA256 Code Signing CA, OU=Symantec Trust Network, O=Symantec Corporation, C=US

Serial number:
5AB0D4FBB68E66252A764F6A8E02A8ED

File PE Metadata
Compilation timestamp:
1/30/2013 7:21:56 PM

OS version:
5.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
2.25

CTPH (ssdeep):
24576:7xG32EBQfwJgqrlutmCtzMd4NS+ehJxfvlJVixsX:08fwpd9Jxfvl/ixsX

Entry address:
0x113BC

Entry point:
55, 8B, EC, 83, C4, A4, 53, 56, 57, 33, C0, 89, 45, C4, 89, 45, C0, 89, 45, A4, 89, 45, D0, 89, 45, C8, 89, 45, CC, 89, 45, D4, 89, 45, D8, 89, 45, EC, B8, 2C, 00, 41, 00, E8, E8, 51, FF, FF, 33, C0, 55, 68, 9E, 1A, 41, 00, 64, FF, 30, 64, 89, 20, 33, D2, 55, 68, 5A, 1A, 41, 00, 64, FF, 32, 64, 89, 22, A1, 48, 5B, 41, 00, E8, 16, D8, FF, FF, E8, 65, D3, FF, FF, 80, 3D, DC, 2A, 41, 00, 00, 74, 0C, E8, 2B, D9, FF, FF, 33, C0, E8, 80, 32, FF, FF, 8D, 55, EC, 33, C0, E8, E2, A3, FF, FF, 8B, 55, EC, B8, 50, 86...
 
[+]

Entropy:
6.9519

Developed / compiled with:
Microsoft Visual C++

Code size:
65.5 KB (67,072 bytes)

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

http://files.free-browser.net/v2/click/3f1001e5/?d=http://au.free-browser.co/downloads/chrome/chrome_setup_en.exe&key=9023d1592789087355cbc4c8ec0bda876c5cd71a698097552165c68a22a26505&sid=CHROME&uid=2ANALYTICS563d959e44cf9&affiliate_image=&product_image=http://au.free-browser.co/graphics/chrome/chrome_product_image.png&n=Google Chrome&filename=chrome_install&done_url=http://free-browser.co/.../&cancel_url=http://free-browser.co/.../?error=1

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