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smadav84.exe.exe

Nadav Kashtan

This program bundles adware during the download and install process using the InstaleRex pay-per-install app monetizer. The application smadav84.exe.exe, “Installer for StarApp” by Nadav Kashtan 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 www.storebox1.info. While running, it connects to the Internet address r1.stylezip.info on port 80 using the HTTP protocol.
Publisher:
StarApp  (signed by Nadav Kashtan)

Product:
StarApp

Description:
Installer for StarApp

Version:
2013.7.31.1745

MD5:
6c8ca8608efcfd115e30bee7aa42691e

SHA-1:
20892004c59a4cbafc762ce8e407f7b5f470755c

SHA-256:
ec2ca586ef76d68e480680ed7bc03aa8fc2538886f2a157d7adc38b02f16f637

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:
4/19/2024 7:48:36 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
Adware.WebPick.Installer (M)
16.2.8.11

File size:
293.4 KB (300,488 bytes)

Product version:
1.0.0.1

Copyright:
Copyright © 2012 StarApp

Original file name:
TSULoader.exe

File type:
Executable application (Win32 EXE)

Installer:
WebPick InstalleRex (Tarma)

Language:
Language Neutral

Common path:
C:\users\{user}\downloads\smadav84.exe.exe

Digital Signature
Signed by:
Nadav Kashtan

Authority:
COMODO CA Limited

Valid from:
11/5/2012 7:00:00 AM

Valid to:
11/6/2013 6:59:59 AM

Subject:
CN=Nadav Kashtan, O=Nadav Kashtan, STREET=Bizron 38, L=Tel Aviv, S=center, PostalCode=67894, C=IL

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

Serial number:
00F861471B38887DE98076AFF491B1B1B3

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

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
8.0

CTPH (ssdeep):
6144:Xrks6Y0JQBkQRl7174NpNUM+UHs+ewmb3I1WVIOnfXsnf/A8:Xrks63yRl1uqM+gs+dmrIEVBfXY/P

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:
7.9570

Developed / compiled with:
Microsoft Visual C++

Code size:
7.5 KB (7,680 bytes)

The file smadav84.exe.exe has been seen being distributed by the following URL.

http://www.storebox1.info/v298/?product_name=smadav84.exe&filesize=1.23 MB&product_title=smadav84.exe&installer_file_name=smadav84.exe&product_file_name=smadav84.exe&product_download_url=http://www.ziddu.com/store/temp2/temp1/2011/1/25/D//1295964554_smadav84.exe&uuid=

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=62874046&publisher_id=287&source_id=0&page_id=0&country_code=US&locale=US&browser_id=4&download_id=188622138&external_id=0&session_id=377244276&hardware_id=440118322&installer_file_name=smadav84

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