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microsoft-security-essentials.exe

Extended Setup

The file is a bundle distribution and utilizes the installCore download manager to distribute this potentially unwanted software. The application microsoft-security-essentials.exe by Extended Setup 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 installCore installer. The file has been seen being downloaded from www.win-install.com.
Publisher:
Extended Setup  (signed and verified)

MD5:
871000e2488bd131862118fa66b1033f

SHA-1:
be582b6bbfcb7930e7508ce8888697aed37c9e93

SHA-256:
2825da534136c5e9efa6a20d5702dc685129b4542c96b4dab673f04683e9b815

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:
4/19/2024 6:29:50 PM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.installCore.Extended (M)
16.6.30.11

File size:
669.7 KB (685,752 bytes)

File type:
Executable application (Win32 EXE)

Bundler/Installer:
installCore (using Inno Setup)

Language:
Language Neutral

Common path:
C:\users\{user}\downloads\microsoft-security-essentials.exe

Digital Signature
Signed by:
Extended Setup

Authority:
COMODO CA Limited

Valid from:
10/21/2013 5:00:00 PM

Valid to:
10/22/2014 4:59:59 PM

Subject:
CN=Extended Setup, O=Extended Setup, STREET=Lilienblum 28, L=Tel Aviv, S=Israel, PostalCode=6513307, C=IL

Issuer:
CN=COMODO Code Signing CA 2, O=COMODO CA Limited, L=Salford, S=Greater Manchester, C=GB

Serial number:
00DC2A1D7B17450E779685BAA191188498

File PE Metadata
Compilation timestamp:
6/19/1992 3:22:17 PM

OS version:
1.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
2.25

CTPH (ssdeep):
12288:pvps4zn0myl2C5Vsb1KB+3fDtxvZu5+LvTQu79/MVPLoueVZxK6dejwsTh:pv60n0Vl24VxB+7tTu5aKVDouCCaCws

Entry address:
0x9C40

Entry point:
55, 8B, EC, 83, C4, C4, 53, 56, 57, 33, C0, 89, 45, F0, 89, 45, DC, E8, 86, 94, FF, FF, E8, 8D, A6, FF, FF, E8, 1C, A9, FF, FF, E8, 53, C9, FF, FF, E8, 9A, C9, FF, FF, E8, C9, F2, FF, FF, E8, 30, F4, FF, FF, 33, C0, 55, 68, FC, A2, 40, 00, 64, FF, 30, 64, 89, 20, 33, D2, 55, 68, C5, A2, 40, 00, 64, FF, 32, 64, 89, 22, A1, 14, C0, 40, 00, E8, 96, FE, FF, FF, E8, C9, FA, FF, FF, 8D, 55, F0, 33, C0, E8, 83, CF, FF, FF, 8B, 55, F0, B8, 24, CE, 40, 00, E8, 32, 95, FF, FF, 6A, 02, 6A, 00, 6A, 01, 8B, 0D, 24, CE...
 
[+]

Entropy:
7.7879

Packer / compiler:
Inno Setup v5.x - Installer Maker

Code size:
37 KB (37,888 bytes)

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

http://www.win-install.com/microsoft-security-essentials/download/.../bing

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