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downloader.exe

WindApp

NOSIBAY

The application downloader.exe, “WindApp installer” by NOSIBAY has been detected as a potentially unwanted program by 2 anti-malware scanners. The program is a setup application that uses the NSIS (Nullsoft Scriptable Install System) installer. It is also typically executed from an Internet Explorer cache folder. The file has been seen being downloaded from it-cdn.windapp.net and multiple other hosts.
Publisher:
NOSIBAY  (signed and verified)

Product:
WindApp

Description:
WindApp installer

Version:
3.0.643.0.61095

MD5:
8769e316d2a46ae0b69a1328aa468669

SHA-1:
521923f6735f140fbaed4c4a4c9e4fbfb984ec07

SHA-256:
834fba1bb34a2922b07affb148cf6afc292d0727dfc8ed83f514fd2ae0767232

Scanner detections:
2 / 68

Status:
Potentially unwanted

Analysis date:
11/8/2024 9:36:53 AM UTC  (today)

Scan engine
Detection
Engine version

AVG
Generic
2015.0.3409

Reason Heuristics
PUP.Installer.NOSIBAY.K
14.7.19.2

File size:
158.2 KB (161,992 bytes)

Copyright:
© Store

File type:
Executable application (Win32 EXE)

Installer:
NSIS (Nullsoft Scriptable Install System)

Language:
Language Neutral

Common path:
C:\users\{user}\appdata\local\microsoft\windows\temporary internet files\content.ie5\{random}\downloader.exe

Digital Signature
Signed by:
NOSIBAY

Authority:
Thawte, Inc.

Valid from:
9/21/2013 1:00:00 AM

Valid to:
11/20/2014 11:59:59 PM

Subject:
CN=NOSIBAY, OU=Nosibay Secure Developement, O=NOSIBAY, L=PEROLS, S=Hérault, C=FR

Issuer:
CN=Thawte Code Signing CA - G2, O="Thawte, Inc.", C=US

Serial number:
4F1CA396B891ED381AFEECC074DB8714

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):
3072:9QIURTXJUETx8BXblOiz0RIbe4WT1wJOZ1bdK2idQNAECYDgYUVtss5oF:9sniDFbmT1yepEdozDiOF

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:
7.6303

Packer / compiler:
Nullsoft install system v2.x

Code size:
23 KB (23,552 bytes)

The file downloader.exe has been seen being distributed by the following 3 URLs.

http://it-cdn.windapp.net/downloader/it/BOO001/.../downloader.exe

http://es-cdn.windapp.net/downloader/es/BOO001/.../downloader.exe

http://fr-cdn.windapp.net/downloader/fr/BOO001/.../downloader.exe

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