The cdosys dll mui (Microsoft CDO for Windows Library) Microsoft Corporation File Malware Analysis

The cdosys.dll.mui (Microsoft CDO for Windows Library) File Analysis

Updated 2 months ago

Checked by Malaware Check

cdosys.dll.mui

Hash Type	Value	Action
MD5	aa44d7f5f7eb8fba5425f4a867cc2823
SHA1	fe79c2901931972328ce4014b417eaef262ddf51
SHA256	37e5d8f1d96c01f369267aa46660d8bdb5935ecdb9bd051cad736488c72391fe
SHA512	f16ebd0dc4b43990dc13e0dd2ca2735030a35a0368645ba0b1b2fe2bee2e70a95e7578dc66858b74e30676ce95bad369a15f7ce48167179d2adc70bc97114925

Hash Type

Value

Action

MD5

aa44d7f5f7eb8fba5425f4a867cc2823

SHA1

fe79c2901931972328ce4014b417eaef262ddf51

SHA256

37e5d8f1d96c01f369267aa46660d8bdb5935ecdb9bd051cad736488c72391fe

SHA512

f16ebd0dc4b43990dc13e0dd2ca2735030a35a0368645ba0b1b2fe2bee2e70a95e7578dc66858b74e30676ce95bad369a15f7ce48167179d2adc70bc97114925

PE Analysis

Basic Information

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Image Base	`0x10000000`
Entry Point	`0x10000000`
Compilation Time	1970-01-01 00:00:00
Checksum	0x00018c22 (Actual: 0x00018c22)
OS Version	10.0
PEiD Signatures	`PE32 executable (DLL) (GUI) Intel 80386, for MS Windows`
Digital Signature	No valid SignedData structure was found.
Imports	0
Exports	0 functions
Resources	3 Resources
Sections	2 Sections

Version Information

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CompanyName	Microsoft Corporation
FileDescription	Microsoft CDO for Windows Library
FileVersion	6.6.19041.1 (WinBuild.160101.0800)
InternalName	CDOSYS.DLL
LegalCopyright	© Microsoft Corporation. All rights reserved.
OriginalFilename	CDOSYS.DLL.MUI
ProductName	Microsoft® Windows® Operating System
ProductVersion	6.6.19041.1
OleSelfRegister
Translation	0x0401 0x04b0

PE Sections

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Name	Virtual Address	Virtual Size	Raw Size	Entropy	Characteristics	MD5
`.rdata`	`0x00001000`	176 bytes	512 bytes	1.76 (Normal)	`IMAGE_SCN_CNT_INITIALIZED_DATA\|IMAGE_SCN_MEM_READ`	`5F14BA87A70172B8B64EA35913FF0A37`
`.rsrc`	`0x00002000`	49,152 bytes	46,592 bytes	4.13 (Normal)	`IMAGE_SCN_CNT_INITIALIZED_DATA\|IMAGE_SCN_MEM_READ`	`581F73A6474C1EE2320127BDB219F375`

Resource Analysis

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Total Resources: 3 (46,032 bytes)

Resource Type	Count	Total Size	Percentage
MUI	1	176 bytes	0.4%
RT_MESSAGETABLE	1	44,884 bytes	97.5%
RT_VERSION	1	972 bytes	2.1%

Certificate Chain Analysis

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Certificate Information

Product	Microsoft® Windows® Operating System
Description	Microsoft CDO for Windows Library
File Version	6.6.19041.1 (WinBuild.160101.0800)
Original Name	CDOSYS.DLL.MUI
Internal Name	CDOSYS.DLL
Copyright	© Microsoft Corporation. All rights reserved.

✓ This file has been digitally signed and the certificate chain has been verified

The signature ensures file integrity and authenticity from the publisher
Timestamping proves when the signature was applied

Certificate Verification Status

No valid SignedData structure was found.

Recommendation: Verify the file source and ensure it comes from a trusted publisher.

Keep Your System Protected

This file appears clean, but regular security maintenance is important

Regular Scans: Run weekly system scans to detect new threats before they can cause damage.
Keep Software Updated: Ensure your operating system and all applications have the latest security patches.
Safe Browsing: Avoid suspicious websites and never download software from untrusted sources.
Email Security: Be cautious with email attachments and links, even from known contacts.

Proactive Protection

This file passed all security checks, but stay vigilant. New malware variants appear daily that can evade detection. Always verify files come from official sources and check digital signatures when available.

File Name	cdosys.dll.mui
File Type	PE32 executable (DLL) (GUI) Intel 80386, for MS Windows
Scanner Version	1.0.210.174
Database Version	2025-03-12 23:00:44 UTC

The cdosys.dll.mui (Microsoft CDO for Windows Library) File Analysis

Technical Analysis

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File Identification