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windowscodec.exe

Open Source Developer

The application windowscodec.exe by Open Source Developer has been detected as a potentially unwanted program by 3 anti-malware scanners. The program is a setup application that uses the installCore installer. The setup program uses the InstallCore engine which may bundle additional software offers including toolbars and browser extensions. The file has been seen being downloaded from up.br.bav.baidu.com and multiple other hosts.
Publisher:
Open Source Developer  (signed and verified)

MD5:
c0558b61077c8ef3f35f2ee28caef0fb

SHA-1:
31b6436c7b393bfe27f5c4d285e974e032d54aaa

SHA-256:
89984b194344e40870773fddbf60bbaaf3ad9e5098b163d9d9d9ccc7a900faac

Scanner detections:
3 / 68

Status:
Potentially unwanted

Explanation:
Uses the InstallCore download manager to install additional potentially unwanted software which may include extensions such as DealPly and various toolbars.

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:
4/18/2024 2:03:52 PM UTC  (today)

Scan engine
Detection
Engine version

Baidu Antivirus
Adware.Win32.InstallCore
4.0.3.14108

ESET NOD32
Win32/InstallCore.QO (variant)
8.10528

Reason Heuristics
PUP.InstallCore.Bundler (M)
16.1.13.13

File size:
766.8 KB (785,232 bytes)

File type:
Executable application (Win32 EXE)

Bundler/Installer:
installCore (using Inno Setup)

Language:
Language Neutral

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

Digital Signature
Signed by:
Open Source Developer

Authority:
Unizeto Technologies S.A.

Valid from:
11/14/2013 10:54:26 AM

Valid to:
11/14/2014 10:54:26 AM

Subject:
E=admin@mediacodec.org, CN=Open Source Developer, OU=Software Publishing, O=Open Source Developer, C=PL

Issuer:
CN=Certum Level III CA, OU=Certum Certification Authority, O=Unizeto Technologies S.A., C=PL

Serial number:
39A416F8FFA5E48B147ADBE062E63C90

File PE Metadata
Compilation timestamp:
6/19/1992 11:22:17 PM

OS version:
1.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
2.25

CTPH (ssdeep):
12288:jjvpKOp9CL1bdLSvQLJrZIgu3wyryHR1xSD6gLrWiWv+SqTmP:jjv4m9CL15vZITroymeWiWvFxP

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:
7.6508

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

Code size:
37 KB (37,888 bytes)

The file windowscodec.exe has been seen being distributed by the following 4 URLs.

http://up.br.bav.baidu.com/?rh=CF39EABF89F98398E5B4F7672C0146C6&baidusign=15430477&baidurand=7025

http://d14gbdnn5fokdd.cloudfront.net/.../WindowsCodec.exe

http://windowsetup.com/.../?product=wecp&ad=codec&io=A012

http://windowsetup.com/.../?product=wecp&io=A012&ad=pop&ua=gc&clk=0

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