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40e91a4c_stp.exe

Kazaa Acceleration Patch

Prospera Software, Inc.

The application 40e91a4c_stp.exe by Prospera Software has been detected as a potentially unwanted program 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 NSIS (Nullsoft Scriptable Install System) installer. It is also typically executed from the user's temporary directory.
Publisher:
DownloadBoosters LLC  (signed by Prospera Software, Inc.)

Product:
Kazaa Acceleration Patch

Version:
5.8.7.0

MD5:
85d9a0b7d6ebcdc51029a37c5b50f606

SHA-1:
f71da65136fe7b53738b0a6ad9938a6f1167909c

SHA-256:
35cd4c130dd53aec5f078f55b7e18e082cfbc3ac331ba0c9487bde346be5ece4

Scanner detections:
1 / 68

Status:
Potentially unwanted

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.

Analysis date:
4/19/2024 2:11:36 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.ProsperaSoftware.Installer (M)
16.2.15.14

File size:
2 MB (2,116,528 bytes)

Copyright:
© DownloadBoosters LLC

File type:
Executable application (Win32 EXE)

Installer:
NSIS (Nullsoft Scriptable Install System)

Language:
English (United States)

Common path:
C:\users\{user}\appdata\local\temp\{random}.tmp\40e91a4c_stp.exe

Digital Signature
Signed by:
Prospera Software, Inc.

Authority:
VeriSign, Inc.

Valid from:
3/23/2012 12:00:00 AM

Valid to:
3/29/2013 11:59:59 PM

Subject:
CN="Prospera Software, Inc.", OU=Digital ID Class 3 - Microsoft Software Validation v2, O="Prospera Software, Inc.", L=Suwanee, S=Georgia, 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:
0DAD1F7418003A7864BBA4BD9909AE05

File PE Metadata
Compilation timestamp:
12/5/2009 10:50:46 PM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
6.0

CTPH (ssdeep):
49152:OKabjFWu/Ny/7YjNcFUL1kK3DXm5CzhAAabJljLBcvnKLFqCOkadwuGRO:OK2WucDYhcuL65c/ab/OnkqCOBR/

Entry address:
0x323C

Entry point:
81, EC, 80, 01, 00, 00, 53, 55, 56, 33, DB, 57, 89, 5C, 24, 18, C7, 44, 24, 10, 30, 91, 40, 00, 33, F6, C6, 44, 24, 14, 20, FF, 15, 30, 70, 40, 00, 68, 01, 80, 00, 00, FF, 15, B4, 70, 40, 00, 53, FF, 15, 7C, 72, 40, 00, 6A, 08, A3, 58, 3F, 42, 00, E8, 09, 2C, 00, 00, A3, A4, 3E, 42, 00, 53, 8D, 44, 24, 34, 68, 60, 01, 00, 00, 50, 53, 68, 58, F4, 41, 00, FF, 15, 58, 71, 40, 00, 68, B8, 91, 40, 00, 68, A0, 36, 42, 00, E8, BC, 28, 00, 00, FF, 15, B0, 70, 40, 00, BF, 00, 90, 42, 00, 50, 57, E8, AA, 28, 00, 00...
 
[+]

Entropy:
7.9924

Packer / compiler:
Nullsoft install system v2.x

Code size:
23 KB (23,552 bytes)

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