cryptdll.dll

File Path: C:\Windows\system32\cryptdll.dll
Description: Cryptography Manager

Hashes

Type	Hash
MD5	`E95C255BEA1A4C3186E772FF4AF4246D`
SHA1	`6B701887806F9CB720BB3394CAF24FB0EC093903`
SHA256	`1B760C40C6D4F81E90978A13321C94C62CE53CC220234D50DFE8EC4638BF4B95`
SHA384	`B380FDFCEFE1D48B4AEB8F939247E29543B61184036F7ED0F41A348624323A03CE0C35484664B5F38709E8F12F356B39`
SHA512	`B57898A12536C50B048C38E6CBD4ADB92DB0AA3FCE9017768D2B80DA0BF16F160B224A959D9175C0A5563B43631F997DC9783122E8840ABB9B7F7A0B2E2F61F5`
SSDEEP	`1536:SHPn+CokVTSizVLXopJvgZik250hBzBgFtsVf0DIPK74:AfcvGik250hfgFGtCIZ`
IMP	`DC7032551F2AF422C6637CE127C973E4`
PESHA1	`28AF71F1D3695E10F3D3C63D212ABB0170567CC9`
PE256	`85416216A60AAF7891395B0060E8FA50DE58070040150E02CB7FDCE8F839633E`

DLL Exports:

Function Name	Ordinal	Type
`CDRegisterRng`	12	Exported Function
`HMACwithSHA`	13	Exported Function
`CDRegisterCSystem`	10	Exported Function
`CDLocateRng`	9	Exported Function
`CDRegisterCheckSum`	11	Exported Function
`MD5Update`	17	Exported Function
`PBKDF2`	18	Exported Function
`MD5Init`	16	Exported Function
`KRBFXCF2`	14	Exported Function
`MD5Final`	15	Exported Function
`CDBuildVect`	2	Exported Function
`CDFindCommonCSystem`	3	Exported Function
`CDBuildIntegrityVect`	1	Exported Function
`aesCTSDecryptMsg`	19	Exported Function
`aesCTSEncryptMsg`	20	Exported Function
`CDLocateCheckSum`	8	Exported Function
`CDLocateCSystem`	7	Exported Function
`CDGetIntegrityVect`	6	Exported Function
`CDFindCommonCSystemWithKey`	4	Exported Function
`CDGenerateRandomBits`	5	Exported Function

Signature

Status: Signature verified.
Serial: 3300000266BD1580EFA75CD6D3000000000266
Thumbprint: A4341B9FD50FB9964283220A36A1EF6F6FAA7840
Issuer: CN=Microsoft Windows Production PCA 2011, O=Microsoft Corporation, L=Redmond, S=Washington, C=US
Subject: CN=Microsoft Windows, O=Microsoft Corporation, L=Redmond, S=Washington, C=US

File Metadata

Original Filename: cryptdll.dll
Product Name: Microsoft Windows Operating System
Company Name: Microsoft Corporation
File Version: 10.0.19041.1 (WinBuild.160101.0800)
Product Version: 10.0.19041.1
Language: English (United States)
Legal Copyright: Microsoft Corporation. All rights reserved.
Machine Type: 64-bit

File Scan

VirusTotal Detections: 0/69
VirusTotal Link: https://www.virustotal.com/gui/file/1b760c40c6d4f81e90978a13321c94c62ce53cc220234d50dfe8ec4638bf4b95/detection/

Possible Misuse

The following table contains possible examples of cryptdll.dll being misused. While cryptdll.dll is not inherently malicious, its legitimate functionality can be abused for malicious purposes.

Source	Source File	Example	License
sigma	image_load_mimikatz_inmemory_detection.yml	`- 'cryptdll.dll'`	DRL 1.0
signature-base	apt_skeletonkey.yar	$dll1 = “cryptdll.dll”	CC BY-NC 4.0