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msstdfmt_dll_windows_7_64_bit.exe

Direct Download GTt

This is the OutBrowse Revenyou installer which bundles offers for additional third party applications that may be unwanted and installed without consent. The application msstdfmt_dll_windows_7_64_bit.exe by Direct Download GTt 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 yes-my-lord.com.
Publisher:
Direct Download GTt  (signed and verified)

MD5:
4d527ddaf4c729c231d87e7639b7d84d

SHA-1:
74a9b6e3a6369468f813cbc0cc08468a818af8d7

SHA-256:
8bcaac1269ed1388bcbb7adee52a8927d0d04bb02d5b6adcfd317857e73ace07

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 an installer which may bundle legitimate applications with offers for additional 3rd-party applications that may be unwanted by the user. While the installer contains an 'opt-out' feature this is not set be defult and is usually overlooked.

Analysis date:
12/25/2024 7:27:02 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Outbrowse.DirectDownloadGTt.Bundler (M)
16.2.5.18

File size:
92.2 KB (94,400 bytes)

File type:
Executable application (Win32 EXE)

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

Common path:
C:\users\{user}\downloads\msstdfmt_dll_windows_7_64_bit.exe

Digital Signature
Signed by:
Direct Download GTt

Authority:
thawte, Inc.

Valid from:
2/16/2015 7:00:00 PM

Valid to:
1/27/2016 6:59:59 PM

Subject:
CN=Direct Download GTt, O=Direct Download GTt, L=Dublin, S=Dublin, C=IE

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

Serial number:
0AD81318E83A71271977E435C3D52212

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

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
6.0

CTPH (ssdeep):
1536:EpgpHzb9dZVX9fHMvG0D3XJ8Y7NeYRNgKJ+BCydQhkqIzjbanyUXZf2mGq6ZHiB+:ygXdZt9P6D3XJLeqgKJ+BChh5K2Om9Er

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:
7.1023

Packer / compiler:
Nullsoft install system v2.x

Code size:
23.5 KB (24,064 bytes)

The file msstdfmt_dll_windows_7_64_bit.exe has been seen being distributed by the following URL.

http://yes-my-lord.com/msstdfmt_dll_windows_7_64_bit.php

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