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microsoft-security-essentials.exe

MARI Mara

This is the OutBrowse Revenyou installer which bundles offers for additional third party applications that may be unwanted and installed without consent. The application microsoft-security-essentials.exe by MARI Mara 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 OutBrowse Revenyou installer. The file has been seen being downloaded from www.safe-setup.com.
Publisher:
MARI Mara  (signed and verified)

MD5:
9992c1c1fb73c63c91589089c4181b3f

SHA-1:
9cc5f3b2acec078674e34b2a605da53e8dd8a9ed

SHA-256:
636fc30ca73d368e097ff5359af07c228c6b1cc47ecd88ea05bcbd5b1c014be3

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 'download manager' is also considered bundleware, a utility designed to download software (possibly legitimate or opensource) and bundle it with a number of optional offers including ad-supported utilities, toolbars, shopping comparison tools and browser extensions.

Analysis date:
5/21/2024 3:36:19 PM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Outbrowse.MARIMara.Bundler (M)
15.11.13.10

File size:
575.8 KB (589,592 bytes)

File type:
Executable application (Win32 EXE)

Bundler/Installer:
OutBrowse Revenyou (using Nullsoft Install System)

Language:
Language Neutral

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

Digital Signature
Signed by:
MARI Mara

Authority:
thawte, Inc.

Valid from:
1/8/2015 4:00:00 PM

Valid to:
12/17/2015 3:59:59 PM

Subject:
CN=MARI Mara, O=MARI Mara, L=Dublin, S=Dublin, C=IE

Issuer:
CN=thawte SHA256 Code Signing CA, O="thawte, Inc.", C=US

Serial number:
7792B09FBA739BDBD98A9B14D63739DE

File PE Metadata
Compilation timestamp:
12/5/2009 2:50:52 PM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
6.0

CTPH (ssdeep):
12288:JHjqM2qRreQ2BUzxuO0GyTqHTxDChwcJkpg4O0Bza0uUT/GXqYBIO:JO+eQ2BUlugygTxQwyogJKzaUz2/

Entry address:
0x30FA

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, 18, EC, 42, 00, E8, F1, 2B, 00, 00, A3, 64, EB, 42, 00, 53, 8D, 44, 24, 34, 68, 60, 01, 00, 00, 50, 53, 68, 98, 8F, 42, 00, FF, 15, 58, 71, 40, 00, 68, 54, 91, 40, 00, 68, 60, E3, 42, 00, E8, A4, 28, 00, 00, FF, 15, AC, 70, 40, 00, BF, 00, 40, 43, 00, 50, 57, E8, 92, 28, 00, 00...
 
[+]

Entropy:
7.9676

Packer / compiler:
Nullsoft install system v2.x

Code size:
23.5 KB (24,064 bytes)

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

http://www.safe-setup.com/microsoft-security-essentials/download/.../bing

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