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microsoft security essentials setup.exe

WeDownload, Ltd

The application microsoft security essentials setup.exe by WeDownload 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 Midia Downloader installer. It is also typically executed from an Internet Explorer cache folder. The file has been seen being downloaded from microsoft-security-essentials.todownload.com.
Publisher:
WeDownload, Ltd  (signed and verified)

Version:
1.0.0.0

MD5:
8d0dd44a43d2d4c14781fac6d01db825

SHA-1:
01555304ec8f2646f894e831ec53130e3324bf61

SHA-256:
4c22f2c4d024d88c313f49b2d1b372e6bc64a68007626b5e4ac8b2ad357ecab1

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:
4/16/2024 10:05:20 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.WeDownload.Bundler (M)
16.6.3.21

File size:
1.1 MB (1,160,856 bytes)

Product version:
1.0.0.0

File type:
Executable application (Win32 EXE)

Bundler/Installer:
Midia Downloader

Language:
English (United States)

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

Digital Signature
Signed by:
WeDownload, Ltd

Authority:
DigiCert Inc

Valid from:
2/5/2013 4:00:00 PM

Valid to:
2/11/2016 4:00:00 AM

Subject:
CN="WeDownload, Ltd", O="WeDownload, Ltd", L=Nicosia, C=CY

Issuer:
CN=DigiCert Assured ID Code Signing CA-1, OU=www.digicert.com, O=DigiCert Inc, C=US

Serial number:
0320C5B8F7CE6E92D3665598826A4480

File PE Metadata
Compilation timestamp:
7/15/2013 2:58:54 AM

OS version:
5.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
2.25

CTPH (ssdeep):
24576:MFVRc+TS2Mt1nFae2kRgNvs8/JmJj82UlJh6Ur6ce7BgctM:MTRlTSrgN3q1UPf9e7B5t

Entry address:
0x37B960

Entry point:
60, BE, 00, A0, 67, 00, 8D, BE, 00, 70, D8, FF, C7, 87, 34, 9C, 2C, 00, 36, 68, 14, 46, 57, 83, CD, FF, EB, 0E, 90, 90, 90, 90, 8A, 06, 46, 88, 07, 47, 01, DB, 75, 07, 8B, 1E, 83, EE, FC, 11, DB, 72, ED, B8, 01, 00, 00, 00, 01, DB, 75, 07, 8B, 1E, 83, EE, FC, 11, DB, 11, C0, 01, DB, 73, 0B, 75, 28, 8B, 1E, 83, EE, FC, 11, DB, 72, 1F, 48, 01, DB, 75, 07, 8B, 1E, 83, EE, FC, 11, DB, 11, C0, EB, D4, 01, DB, 75, 07, 8B, 1E, 83, EE, FC, 11, DB, 11, C9, EB, 52, 31, C9, 83, E8, 03, 72, 11, C1, E0, 08, 8A, 06, 46...
 
[+]

Entropy:
7.8978

Packer / compiler:
UPX v0.89.6 - v1.02 / v1.05 -v1.22 (Delphi) stub

Code size:
1 MB (1,060,864 bytes)

The file microsoft security essentials setup.exe has been seen being distributed by the following URL.

http://microsoft-security-essentials.todownload.com/get/file/id/.../?lp=adwords&kw=Windows security essentials&mt=e&ad=27163862838&pl=&ds=s&gclid=CKPltI2Jt7oCFeY-MgodLnQALA

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