a$ap.exe

Moshe Caspi

This program bundles adware during the download and install process using the InstaleRex pay-per-install app monetizer. The application a$ap.exe, “Installer for StarApp” by Moshe Caspi has been detected as adware by 34 anti-malware scanners. The program is a setup application that uses the WebPick InstalleRex (Tarma) installer. The setup program uses Web-Pick's InstalleRex download manager and installer to bundle potentially unwanted ad-supported software which includes toolbars and browser extensions through a pay-per-install monetization scheme.
Publisher:
StarApp  (signed by Moshe Caspi)

Product:
StarApp

Description:
Installer for StarApp

Version:
2013.6.13.1400

MD5:
8520a743d551e7e70075e74d6a7fec8f

SHA-1:
a6cdcc8026555b113ca048fa90ca1e7366242fcd

SHA-256:
3e2c0350e79f69443542b392e867f5584a5b80ff711a8b76d803389ff6b41c27

Scanner detections:
34 / 68

Status:
Adware

Explanation:
Uses the InstalleRex from WebPick Internet Holdings to install bundled add-ons including toolbars and other web browser extensions.

Analysis date:
4/26/2024 11:32:33 AM UTC  (today)

Scan engine
Detection
Engine version

Lavasoft Ad-Aware
Adware.Generic.560472
886

Agnitum Outpost
Trojan.PEF13C
7.1.1

AhnLab V3 Security
PUP/Win32.TSULoader
2014.09.02

Avira AntiVirus
TR/PEF13C.ql
7.11.170.100

avast!
Win32:Downloader-UZF [PUP]
140813-1

AVG
Adware AdInstaller.P
2014.0.4015

Bitdefender
Adware.Generic.560472
1.0.20.1220

Bkav FE
W32.FamVT.AntiFWK.Trojan
1.3.0.4959

Clam AntiVirus
Win.Trojan.Agent-729188
0.98/19318

Comodo Security
Application.Win32.Agent.V
19393

Dr.Web
Adware.Downware.1166
9.0.1.05190

Emsisoft Anti-Malware
Adware.Generic.560472
9.0.0.4324

ESET NOD32
Win32/InstalleRex.J potentially unwanted application
7.0.302.0

Fortinet FortiGate
Riskware/InstalleRex
9/1/2014

F-Prot
W32/InstallRex.B
4.6.5.141

F-Secure
Adware.Generic.560472
11.2014-01-09_2

G Data
Adware.Generic.560472
14.9.24

IKARUS anti.virus
PUA.InstallRex
t3scan.1.7.5.0

K7 AntiVirus
Unwanted-Program
13.183.13230

Kaspersky
not-a-virus:AdWare.Win32.Agent
15.0.0.494

Malwarebytes
PUP.Optional.Installex
v2014.09.01.07

McAfee
PUP-FHQ
5600.7020

MicroWorld eScan
Adware.Generic.560472
15.0.0.732

NANO AntiVirus
Riskware.Win32.Agent.crfilj
0.28.2.61942

Panda Antivirus
PUP/TSUploader
14.09.01.07

Qihoo 360 Security
Malware.QVM20.Gen
1.0.0.1015

Quick Heal
Trojan.AntiFW.B5
9.14.14.00

Reason Heuristics
Adware.WebPick.Installer.E
14.9.1.10

Rising Antivirus
PE:Malware.Agent!6.25
23.00.65.14830

Sophos
InstallRex
4.98

SUPERAntiSpyware
PUP.InstallRex/Variant
10385

Vba32 AntiVirus
Downware.TSU
3.12.26.3

VIPRE Antivirus
Threat.4753027
32210

Zillya! Antivirus
Trojan.PEF13C.Win32.159
2.0.0.1908

File size:
285.5 KB (292,344 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\a$ap.exe

Digital Signature
Signed by:

Authority:
COMODO CA Limited

Valid from:
8/1/2012 7:00:00 PM

Valid to:
8/2/2013 6:59:59 PM

Subject:
CN=Moshe Caspi, O=Moshe Caspi, STREET=Hashuk 39, L=Tel Aviv, S=Israel, PostalCode=66067, C=IL

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

Serial number:
00B1B859272556EC39AF8F0E4A626C2ADC

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

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
8.0

CTPH (ssdeep):
6144:krkG6Y0JQBkQRl7174NpNUM+UHs+l96AzqrbuMEdFx7507KAFG9StKWpC:krkG63yRl1uqM+gs+i6ubuhdL2pGiK5

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:
7.9552

Developed / compiled with:
Microsoft Visual C++

Code size:
7.5 KB (7,680 bytes)

The file a$ap.exe has been seen being distributed by the following 3 URLs.

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=9642720&publisher_id=642&source_id=0&page_id=0&country_code=US&locale=US&browser_id=4&download_id=28928160&external_id=0&session_id=57856320&hardware_id=67499040&installer_file_name=a$ap

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