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download.exe

Gigabase

Fedorov Paul

The is the installer for the WebPick InstalleRex download manager which bundles applications with offers for additional 3rd party software, mostly unwanted adware, and may be installed without consent. The application download.exe by Fedorov Paul 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 WebPick InstalleRex installer. The file has been seen being downloaded from gigabase.info. While running, it connects to the Internet address r1.stylezip.info on port 80 using the HTTP protocol.
Publisher:
Kurs.ru, Inc.  (signed by Fedorov Paul)

Product:
Gigabase

Version:
1.1.0

MD5:
8498295a2c97831a973ad277db88fc8e

SHA-1:
5c948ee596626c09975145c58f8c62d6950b543b

SHA-256:
1827a0c558d03c56c33299772eb6f9492b4ab73cd6b05ab00f4ba3f578d8e6e8

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:
4/26/2024 12:28:00 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Webpick.FedorovPaul.Bundler (M)
16.2.8.19

File size:
2 MB (2,078,664 bytes)

Product version:
1.1.0

File type:
Executable application (Win32 EXE)

Bundler/Installer:
WebPick InstalleRex

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

Digital Signature
Signed by:
Fedorov Paul

Authority:
Thawte, Inc.

Valid from:
8/28/2012 6:00:00 AM

Valid to:
8/29/2013 5:59:59 AM

Subject:
CN=Fedorov Paul, OU=Individual Developer, O=No Organization Affiliation, L=Saint-Petersburg, S=Saint-Petersburg, C=RU

Issuer:
CN=Thawte Code Signing CA - G2, O="Thawte, Inc.", C=US

Serial number:
702D4055EE5CC734192DCBDFFE7AE8E1

File PE Metadata
Compilation timestamp:
5/15/2010 12:38:28 PM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
2.56

CTPH (ssdeep):
49152:DukfCXVXihXI+uMKcu86zUUJcgZzg+TelMFtVJ:B0yhYbMmzUUjZzPXBJ

Entry address:
0x4044

Entry point:
55, 89, E5, 57, 56, 53, 81, EC, AC, 01, 00, 00, E8, 97, 52, 00, 00, C7, 04, 24, 01, 80, 00, 00, E8, 43, 4F, 00, 00, 56, C7, 04, 24, 00, 00, 00, 00, E8, A6, 52, 00, 00, A3, 50, 5B, 42, 00, 53, C7, 04, 24, 08, 00, 00, 00, E8, 26, 32, 00, 00, A3, 00, 5C, 42, 00, 8D, 85, 84, FE, FF, FF, 51, C7, 44, 24, 10, 00, 00, 00, 00, C7, 44, 24, 0C, 60, 01, 00, 00, 89, 44, 24, 08, C7, 44, 24, 04, 00, 00, 00, 00, C7, 04, 24, A4, B2, 40, 00, E8, D0, 51, 00, 00, 83, EC, 14, C7, 44, 24, 04, A5, B2, 40, 00, C7, 04, 24, 30, 5C...
 
[+]

Code size:
33 KB (33,792 bytes)

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

http://gigabase.info/.../download.exe

The executing file has been seen to make the following network communications in live environments.

TCP (HTTP):
Connects to r1.stylezip.info  (54.186.255.26:80)

TCP (HTTP):
Connects to c1.stylezip.info  (54.186.255.26:80)

 
http://c1.stylezip.info/?step_id=1&installer_id=63169264&publisher_id=316&source_id=0&page_id=0&country_code=US&locale=US&browser_id=4&download_id=189507792&external_id=0&session_id=379015584&hardware_id=442184848&installer_file_name=download

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