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postsmile.exe

App secure LLC

This is the Softpulse installer which bundles applications with offers for additional 3rd party software, mostly unwanted adware, and may be installed with minimal consent. The application postsmile.exe by App secure 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 Softpulse SoftwareBundler installer. The file has been seen being downloaded from javdownloaderx.com.
Publisher:
App secure LLC  (signed and verified)

MD5:
4dc690103b7c72c3b6f8946a76bbc41e

SHA-1:
567b91ca4547614f2659192249124e61c7776d76

SHA-256:
50ab6418ee9835429e6a026be9992055029360c8998afa0fa03395b375024b5d

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 an installer which may bundle legitimate applications with offers for additional 3rd-party applications that may be unwanted by the user. While the installer contains an 'opt-out' feature this is not set be defult and is usually overlooked.

Analysis date:
11/6/2024 12:51:45 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Softpulse (M)
16.7.26.14

File size:
619 KB (633,872 bytes)

File type:
Executable application (Win32 EXE)

Bundler/Installer:
Softpulse SoftwareBundler (using Nullsoft Install System)

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

Digital Signature
Signed by:
App secure LLC

Authority:
VeriSign, Inc.

Valid from:
12/17/2014 4:00:00 AM

Valid to:
12/18/2015 3:59:59 AM

Subject:
CN=App secure LLC, O=App secure LLC, L=Wilmington, S=Delaware, C=US

Issuer:
CN=VeriSign Class 3 Code Signing 2010 CA, OU=Terms of use at https://www.verisign.com/rpa (c)10, OU=VeriSign Trust Network, O="VeriSign, Inc.", C=US

Serial number:
5D0A1845D85007CD040B350F48C5F721

File PE Metadata
Compilation timestamp:
12/6/2009 2:50:52 AM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
6.0

CTPH (ssdeep):
12288:mbDPfsqPFhkOyLmW0sApoNp8263/ms5wbsQbC7D3dx3qAT8qo:mbDPkX5msAUp8263L5C63dRVT8X

Entry address:
0x30FA

Entry point:
81, EC, 80, 01, 00, 00, 53, 55, 56, 33, DB, 57, 89, 5C, 24, 18, C7, 44, 24, 10, 60, 91, 40, 00, 33, F6, C6, 44, 24, 14, 20, FF, 15, 30, 70, 40, 00, 68, 01, 80, 00, 00, FF, 15, B0, 70, 40, 00, 53, FF, 15, 7C, 72, 40, 00, 6A, 08, A3, 18, EC, 42, 00, E8, F1, 2B, 00, 00, A3, 64, EB, 42, 00, 53, 8D, 44, 24, 34, 68, 60, 01, 00, 00, 50, 53, 68, 98, 8F, 42, 00, FF, 15, 58, 71, 40, 00, 68, 54, 91, 40, 00, 68, 60, E3, 42, 00, E8, A4, 28, 00, 00, FF, 15, AC, 70, 40, 00, BF, 00, 40, 43, 00, 50, 57, E8, 92, 28, 00, 00...
 
[+]

Entropy:
7.9513

Packer / compiler:
Nullsoft install system v2.x

Code size:
23.5 KB (24,064 bytes)

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

http://javdownloaderx.com/.../out.php?sxid=7g6qmh372587

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