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skype.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 skype.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 fastjavinstall.com.
Publisher:
App secure LLC  (signed and verified)

MD5:
c3d56ea2e80da94eed1b1ce74d6db9d4

SHA-1:
942a6b2a578be4e4ca42a6b8613d3b83ab8f6086

SHA-256:
c132e8647bc4d19c0d1499d01b10fc3d1b4d9aa35ce988c92f38bc4c6dc6a0c8

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:
12/28/2024 9:17:48 PM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Softpulse.Appsecur.Bundler (M)
16.5.8.6

File size:
593.8 KB (608,096 bytes)

File type:
Executable application (Win32 EXE)

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

Common path:
C:\users\{user}\downloads\skype.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 2:50:41 AM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
6.0

CTPH (ssdeep):
12288:Zy90TBKz6pa9VlnFcuPu0nFLN01iaDKpgzgFJ9c9Mr5rcR:ZyqnpmV9FcuPu/P8FXc9i6R

Entry address:
0x30CB

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, 38, 3F, 42, 00, E8, F1, 2B, 00, 00, A3, 84, 3E, 42, 00, 53, 8D, 44, 24, 34, 68, 60, 01, 00, 00, 50, 53, 68, 30, F4, 41, 00, FF, 15, 58, 71, 40, 00, 68, 54, 91, 40, 00, 68, 80, 36, 42, 00, E8, A4, 28, 00, 00, FF, 15, AC, 70, 40, 00, BF, 00, 90, 42, 00, 50, 57, E8, 92, 28, 00, 00...
 
[+]

Entropy:
7.9334

Packer / compiler:
Nullsoft install system v2.x

Code size:
22.5 KB (23,040 bytes)

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

http://fastjavinstall.com/.../out.php?sxid=z4xtpm588927

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