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google_chrome_setup.exe

Kosos

Download Jet

The installer utilizes the installCore download manager which may bundle additional offers for various ad-supported toolbars, extensions and utilities. The application google_chrome_setup.exe, “Kosos Setup ” by Download Jet 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 installCore installer. With this installer, users are expecting to download Google's Chrome web browser but before that occurs they may be presented with additional offers, mostly potentially unwanted software or adware.
Publisher:
Download Jet  (signed and verified)

Product:
Kosos

Description:
Kosos Setup

MD5:
f43e9c5b85da48b48390bf3d2d0e4508

SHA-1:
48632722618de1ef09acf7d4b6cca03f53c96968

SHA-256:
fb4a912c601a6fbe5827d5cf107828d5054e5baf8f05127da0c846d77422b538

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:
4/29/2024 9:22:18 PM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.installCore (M)
17.3.13.23

File size:
1.1 MB (1,110,872 bytes)

Product version:
3.3.2

File type:
Executable application (Win32 EXE)

Bundler/Installer:
installCore (using Inno Setup)

Language:
Language Neutral

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

Digital Signature
Signed by:
Download Jet

Authority:
COMODO CA Limited

Valid from:
1/14/2015 7:00:00 PM

Valid to:
1/14/2017 6:59:59 PM

Subject:
CN=Download Jet, O=Download Jet, STREET="500 Westover Drive #6502", L=Sanford, S=NC, PostalCode=27330, C=US

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

Serial number:
71A3B4CEFFECF361AB11477318001135

File PE Metadata
Compilation timestamp:
6/19/1992 6:22:17 PM

OS version:
1.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
2.25

Entry address:
0x9C40

Entry point:
55, 8B, EC, 83, C4, C4, 53, 56, 57, 33, C0, 89, 45, F0, 89, 45, DC, E8, 86, 94, FF, FF, E8, 8D, A6, FF, FF, E8, 1C, A9, FF, FF, E8, BF, A9, FF, FF, E8, 5E, C9, FF, FF, E8, C9, F2, FF, FF, E8, 30, F4, FF, FF, 33, C0, 55, 68, FC, A2, 40, 00, 64, FF, 30, 64, 89, 20, 33, D2, 55, 68, C5, A2, 40, 00, 64, FF, 32, 64, 89, 22, A1, 14, C0, 40, 00, E8, 96, FE, FF, FF, E8, C9, FA, FF, FF, 8D, 55, F0, 33, C0, E8, 83, CF, FF, FF, 8B, 55, F0, B8, 24, CE, 40, 00, E8, 32, 95, FF, FF, 6A, 02, 6A, 00, 6A, 01, 8B, 0D, 24, CE...
 
[+]

Entropy:
7.9048

Packer / compiler:
Inno Setup v5.x - Installer Maker

Code size:
37 KB (37,888 bytes)

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

http://www.repositorygiftchuckle.com/c?x=W011Buw1yybg7ZV5SmlkmUGdwgL0caGlBkN3ArFHlEA=&c=2P/5RBUNGkB74runMLl7O2hz0jsqHMq/1iQMCwqH8rrynobMo11CaQIeSDNW8Q75JiVn9i5m3Je6VITJE8A7gKuJ7Z5DBzqMNIyNZ71m/zcYx4fhW95mhKSIbLbvLjBeWiGnfiLQGpVL9B0TJ/gLn9296xoU5MwqHbE1qQdPZpE=&e=0&downloadAs=Google_Chrome_Setup.exe&fallback_url=https://s3-eu-west-1.amazonaws.com/.../ChromeSetup.exe

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