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microsoft_office_2007.exe

MAXTEK LLC

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_office_2007.exe by MAXTEK 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 hnb5b7vedwug67b.cuhoivno.ru.
Publisher:
MAXTEK LLC  (signed and verified)

Version:
1.0.0.0

MD5:
27508f0210dc186fff32390ddd81a305

SHA-1:
77d5bb59e916f801b1303cd8f8a34e540507cf17

SHA-256:
c9bf5893cd63ad71ff43ae31a8ef7e5a6401459f76b4155b8755b7f8e7ad63d2

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:
12/25/2024 12:02:08 PM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Outbrowse.MAXTEK.Bundler (M)
16.2.6.16

File size:
4 MB (4,145,976 bytes)

Product version:
1.0.0.0

File type:
Executable application (Win32 EXE)

Bundler/Installer:
OutBrowse Revenyou

Common path:
C:\users\{user}\downloads\microsoft_office_2007.exe

Digital Signature
Signed by:
MAXTEK LLC

Authority:
thawte, Inc.

Valid from:
12/29/2014 3:00:00 AM

Valid to:
12/30/2015 2:59:59 AM

Subject:
CN=MAXTEK LLC, O=MAXTEK LLC, L=Kharkiv, S=New Brunswick, C=UA

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

Serial number:
5E330605B7CB3B14509516AEA2289E49

File PE Metadata
Compilation timestamp:
6/20/1992 2:22:17 AM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
2.25

CTPH (ssdeep):
98304:YsrF4sfMcDrKfeHs4UtDwqhm3V3sY8a5aNLhdMSWR98umi+YEIqUQvV:7Ycs4oDwVV8Y+2SEShIt+V

Entry address:
0x3101180

Entry point:
60, BE, 00, E0, 1C, 03, 8D, BE, 00, 30, 23, FD, 57, 83, CD, FF, EB, 10, 90, 90, 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, 83, F0, FF, 74, 75, D1, F8, 89...
 
[+]

Entropy:
7.9263

Packer / compiler:
UPX 2.90LZMA

Code size:
3.2 MB (3,358,720 bytes)

The file microsoft_office_2007.exe has been seen being distributed by the following URL.

http://hnb5b7vedwug67b.cuhoivno.ru/eyJ2ZXIiOiIxIiwic2lkIjoiMzAxMCIsInVybCI6Imh0dHA6Ly8xMS5iZXpzbXMub3JnL2ZpbGVzLzgvdGozNm91MWNpNGxzM2YvTWljcm9zb2Z0LU9mZmljZS0yMDA3LnJhciIsIm5hbWUiOiJNaWNyb3NvZnQtT2ZmaWNlLTIwMDcucmFyIiwidHlwZSI6ImFyY2hpdmUiLCJzaXplIjoiMzEzMjMyODA2Iiwicm5kMCI6NjM0MTA4MzE5ODc4NTd9

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