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downloader_for_contra.exe

Daneil Jemoch

This is a WebPick installer that bundles (with very minimal user consent) a number of adware browser extensions which inject ads in the browser. The application downloader_for_contra.exe, “Installer for AppSnow” by Daneil Jemoch 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 (Tarma) installer. The file has been seen being downloaded from zilliontoolkitusa.info. While running, it connects to the Internet address r1.stylezip.info on port 80 using the HTTP protocol.
Publisher:
AppSnow  (signed by Daneil Jemoch)

Product:
AppSnow

Description:
Installer for AppSnow

Version:
2014.6.19.1201

MD5:
2a05a2224dfa19ed0df7033629791978

SHA-1:
8fc63079009dcab8c6d1634a45cb7e056386bcc0

SHA-256:
5f45e78651089d167590a45296c039fc1c9138b54aa883d2e57e73197e66710f

Scanner detections:
1 / 68

Status:
Adware

Explanation:
Uses Web-Pick's 'File Product', an Installer which wraps various products and downloads and installs it silently through the process, hosted on TusFiles.

Analysis date:
4/26/2024 7:34:35 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
Adware (M)
16.8.5.11

File size:
348.3 KB (356,632 bytes)

Product version:
1.0.0.3

Copyright:
Copyright © 2014 AppSnow

Original file name:
TSULoader.exe

File type:
Executable application (Win32 EXE)

Installer:
WebPick InstalleRex (Tarma)

Language:
Language Neutral

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

Digital Signature
Signed by:
Daneil Jemoch

Authority:
COMODO CA Limited

Valid from:
9/1/2013 6:00:00 PM

Valid to:
9/2/2014 5:59:59 PM

Subject:
CN=Daneil Jemoch, O=Daneil Jemoch, STREET=Dubenskay 3, L=Kiev, S=Kiev, PostalCode=03056, C=UA

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

Serial number:
49A39B9858F6FBAB7EFD6CE450878DDB

File PE Metadata
Compilation timestamp:
3/12/2013 2:51:45 AM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
8.0

CTPH (ssdeep):
6144:XrPgIbUzkuvcBYC47l2xNV68QGE60LAmcW+OV6uwAGjZK3qLyk3UPD:XrINkuveY3WV6L1sOEu6NBa

Entry address:
0x14DB

Entry point:
55, 8B, EC, 81, EC, 2C, 06, 00, 00, 53, 56, 33, DB, 57, 66, 89, 9D, DC, FB, FF, FF, 89, 5D, F4, 89, 5D, FC, FF, 15, 74, 30, 40, 00, A3, 08, 44, 40, 00, FF, 15, 70, 30, 40, 00, 8B, F8, 8D, 45, EC, 50, FF, 15, 6C, 30, 40, 00, FF, 15, 68, 30, 40, 00, 8B, F0, F7, D6, 33, F7, FF, 15, 64, 30, 40, 00, 33, F0, 8B, 45, F0, 33, 45, EC, 68, 04, 01, 00, 00, 33, F0, 8D, 85, D4, F9, FF, FF, 50, 53, FF, 15, 60, 30, 40, 00, 85, C0, 75, 41, FF, 15, 5C, 30, 40, 00, 83, F8, 78, 75, 1A, 68, A8, 32, 40, 00, E8, 43, FB, FF, FF...
 
[+]

Entropy:
7.9289

Developed / compiled with:
Microsoft Visual C++

Code size:
7.5 KB (7,680 bytes)

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

http://zilliontoolkitusa.info/v2111?product_name=NES-Contra&filesize=91.86 KB&product_title=NES-Contra&installer_file_name=Downloader_for_Contra&product_file_name=contra.zip&product_download_url=http://download.freeroms.com/nes_roms/02/contra.zip&reffer=http://.../dm_download.php?system=NES&game_id=719&affiliate_id=nes

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

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

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