regini.exe
- File Path:
C:\WINDOWS\system32\regini.exe - Description: Registry Initializer
Hashes
| Type | Hash |
|---|---|
| MD5 | 5FB1FD7CBF411D45F2BE175941307995 |
| SHA1 | 3EC019471AED84B50EA04ED4560E87C3CAC7BC0F |
| SHA256 | D7E1669E51E9C921BC70AEDA2E9DD7005E3298137638A7DABEE39730E3550FAD |
| SHA384 | D98731E3F111333F9E8FB998000015F98D6891E2E3B6CEE8331340F7582A955995F011DFA4867FFE84E7C64BCEB6A1C7 |
| SHA512 | ADEC344E54215DA973E6FF0ECB8F16B0D8E6CCE549D34D42E0B52FA76FD28149B818806A951EA561FFCF8B8B1612E2084718053238CCA8247B286DC1539540D0 |
| SSDEEP | 768:iyaUZvEhpkMEkutakv/Kotcu1s+mlitj6iPGlVogExyylTWcqICJ:ieZvAlEkzlelT6ipUppICJ |
Runtime Data
Usage (stderr):
usage: REGINI [-m \\machinename | -h hivefile hiveroot]
[-i n] [-o outputWidth]
[-b] textFiles...
where: -m specifies a remote Windows NT machine whose registry is to be manipulated.
-h specifies a specify local hive to manipulate.
-i n specifies the display indentation multiple. Default is 4
-o outputWidth specifies how wide the output is to be. By default the
outputWidth is set to the width of the console window if standard
output has not been redirected to a file. In the latter case, an
outputWidth of 240 is used.
-b specifies that REGINI should be backward compatible with older
versions of REGINI that did not strictly enforce line continuations
and quoted strings Specifically, REG_BINARY, REG_RESOURCE_LIST and
REG_RESOURCE_REQUIREMENTS_LIST data types did not need line
continuations after the first number that gave the size of the data.
It just kept looking on following lines until it found enough data
values to equal the data length or hit invalid input. Quoted
strings were only allowed in REG_MULTI_SZ. They could not be
specified around key or value names, or around values for REG_SZ or
REG_EXPAND_SZ Finally, the old REGINI did not support the semicolon
as an end of line comment character.
textFiles is one or more ANSI or Unicode text files with registry data.
Some general rules are:
Semicolon character is an end-of-line comment character, provided it
is the first non-blank character on a line
Backslash character is a line continuation character. All
characters from the backslash up to but not including the first
non-blank character of the next line are ignored. If there is more
than one space before the line continuation character, it is
replaced by a single space.
Indentation is used to indicate the tree structure of registry keys
The REGDMP program uses indentation in multiples of 4. You may use
hard tab characters for indentation, but embedded hard tab
characters are converted to a single space regardless of their
position
Values should come before child keys, as they are associated with
the previous key at or above the value's indentation level.
For key names, leading and trailing space characters are ignored and
not included in the key name, unless the key name is surrounded by
quotes. Imbedded spaces are part of a key name.
Key names can be followed by an Access Control List (ACL) which is a
series of decimal numbers, separated by spaces, bracketed by a
square brackets (e.g. [8 4 17]). The valid numbers and their
meanings are:
1 - Administrators Full Access
2 - Administrators Read Access
3 - Administrators Read and Write Access
4 - Administrators Read, Write and Delete Access
5 - Creator Full Access
6 - Creator Read and Write Access
7 - World Full Access
8 - World Read Access
9 - World Read and Write Access
10 - World Read, Write and Delete Access
11 - Power Users Full Access
12 - Power Users Read and Write Access
13 - Power Users Read, Write and Delete Access
14 - System Operators Full Access
15 - System Operators Read and Write Access
16 - System Operators Read, Write and Delete Access
17 - System Full Access
18 - System Read and Write Access
19 - System Read Access
20 - Administrators Read, Write and Execute Access
21 - Interactive User Full Access
22 - Interactive User Read and Write Access
23 - Interactive User Read, Write and Delete Access
If there is an equal sign on the same line as a left square bracket
then the equal sign takes precedence, and the line is treated as a
registry value. If the text between the square brackets is the
string DELETE with no spaces, then REGINI will delete the key and
any values and keys under it.
For registry values, the syntax is:
value Name = type data
Leading spaces, spaces on either side of the equal sign and spaces
between the type keyword and data are ignored, unless the value name
is surrounded by quotes. If the text to the right of the equal sign
is the string DELETE, then REGINI will delete the value.
The value name may be left off or be specified by an at-sign
character which is the same thing, namely the empty value name. So
the following two lines are identical:
= type data
@ = type data
This syntax means that you can't create a value with leading or
trailing spaces, an equal sign or an at-sign in the value name,
unless you put the name in quotes.
Valid value types and format of data that follows are:
REG_SZ text
REG_EXPAND_SZ text
REG_MULTI_SZ "string1" "str""ing2" ...
REG_DATE mm/dd/yyyy HH:MM DayOfWeek
REG_DWORD numberDWORD
REG_BINARY numberOfBytes numberDWORD(s)...
REG_NONE (same format as REG_BINARY)
REG_RESOURCE_LIST (same format as REG_BINARY)
REG_RESOURCE_REQUIREMENTS (same format as REG_BINARY)
REG_RESOURCE_REQUIREMENTS_LIST (same format as REG_BINARY)
REG_FULL_RESOURCE_DESCRIPTOR (same format as REG_BINARY)
REG_QWORD numberQWORD
REG_MULTISZ_FILE fileName
REG_BINARYFILE fileName
If no value type is specified, default is REG_SZ
For REG_SZ and REG_EXPAND_SZ, if you want leading or trailing spaces
in the value text, surround the text with quotes. The value text
can contain any number of imbedded quotes, and REGINI will ignore
them, as it only looks at the first and last character for quote
characters.
For REG_MULTI_SZ, each component string is surrounded by quotes. If
you want an imbedded quote character, then double quote it, as in
string2 above.
For REG_BINARY, the value data consists of one or more numbers The
default base for numbers is decimal. Hexidecimal may be specified
by using 0x prefix. The first number is the number of data bytes,
excluding the first number. After the first number must come enough
numbers to fill the value. Each number represents one DWORD or 4
bytes. So if the first number was 0x5 you would need two more
numbers after that to fill the 5 bytes. The high order 3 bytes
of the second DWORD would be ignored.
Whenever specifying a registry path, either on the command line
or in an input file, the following prefix strings can be used:
HKEY_LOCAL_MACHINE
HKEY_USERS
HKEY_CURRENT_USER
USER:
Each of these strings can stand alone as the key name or be followed
a backslash and a subkey path.
REGINI: Missing parameter(s) for -h switch
Signature
- Status: Signature verified.
- Serial:
330000023241FB59996DCC4DFF000000000232 - Thumbprint:
FF82BC38E1DA5E596DF374C53E3617F7EDA36B06 - 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: REGINI.EXE
- Product Name: Microsoft Windows Operating System
- Company Name: Microsoft Corporation
- File Version: 10.0.18362.1 (WinBuild.160101.0800)
- Product Version: 10.0.18362.1
- Language: English (United States)
- Legal Copyright: Microsoft Corporation. All rights reserved.
File Similarity (ssdeep match)
| File | Score |
|---|---|
| C:\Windows\system32\regini.exe | 55 |
| C:\windows\system32\regini.exe | 25 |
| C:\Windows\system32\regini.exe | 33 |
| C:\Windows\system32\regini.exe | 36 |
Possible Misuse
The following table contains possible examples of regini.exe being misused. While regini.exe is not inherently malicious, its legitimate functionality can be abused for malicious purposes.
| Source | Source File | Example | License |
|---|---|---|---|
| sigma | proc_creation_win_regini.yml | description: Detects the execution of regini.exe which can be used to modify registry keys, the changes are imported from one or more text files. |
DRL 1.0 |
| sigma | proc_creation_win_regini.yml | - https://github.com/LOLBAS-Project/LOLBAS/blob/master/yml/OSBinaries/Regini.yml |
DRL 1.0 |
| sigma | proc_creation_win_regini.yml | - https://docs.microsoft.com/en-us/windows-server/administration/windows-commands/regini |
DRL 1.0 |
| sigma | proc_creation_win_regini.yml | Image\|endswith: '\regini.exe' |
DRL 1.0 |
| sigma | proc_creation_win_regini_ads.yml | description: Detects the import of an alternate data stream with regini.exe, regini.exe can be used to modify registry keys. |
DRL 1.0 |
| sigma | proc_creation_win_regini_ads.yml | - https://github.com/LOLBAS-Project/LOLBAS/blob/master/yml/OSBinaries/Regini.yml |
DRL 1.0 |
| sigma | proc_creation_win_regini_ads.yml | - https://docs.microsoft.com/en-us/windows-server/administration/windows-commands/regini |
DRL 1.0 |
| sigma | proc_creation_win_regini_ads.yml | Image\|endswith: '\regini.exe' |
DRL 1.0 |
| LOLBAS | Regini.yml | Name: Regini.exe |
|
| LOLBAS | Regini.yml | - Command: regini.exe newfile.txt:hidden.ini |
|
| LOLBAS | Regini.yml | - Path: C:\Windows\System32\regini.exe |
|
| LOLBAS | Regini.yml | - Path: C:\Windows\SysWOW64\regini.exe |
|
| LOLBAS | Regini.yml | - IOC: regini.exe reading from ADS |
Additional Info*
*The information below is copied from MicrosoftDocs, which is maintained by Microsoft. Available under CC BY 4.0 license.
regini
Modifies the registry from the command line or a script, and applies changes that were preset in one or more text files. You can create, modify, or delete registry keys, in addition to modifying the permissions on the registry keys.
For details on the format and content of the text script file that regini.exe uses to make changes to the registry, see How to change registry values or permissions from a command line or a script.
Syntax
regini [-m \\machinename | -h hivefile hiveroot][-i n] [-o outputwidth][-b] textfiles...
Parameters
| Parameter | Description |
|---|---|
-m <\\computername> |
Specifies the remote computer name with a registry that is to be modified. Use the format \ComputerName. |
-h <hivefile hiveroot> |
Specifies the local registry hive to modify. You must specify the name of the hive file and the root of the hive in the format hivefile hiveroot. |
-i <n> |
Specifies the level of indentation to use to indicate the tree structure of registry keys in the command output. The regdmp.exe tool (which gets a registry key’s current permissions in binary format) uses indentation in multiples of four, so the default value is 4. |
-o <outputwidth> |
Specifies the width of the command output, in characters. If the output will appear in the command window, the default value is the width of the window. If the output is directed to a file, the default value is 240 characters. |
| -b | Specifies that regini.exe output is backward compatible with previous versions of regini.exe. |
| textfiles | Specifies the name of one or more text files that contain registry data. Any number of ANSI or Unicode text files can be listed. |
Remarks
The following guidelines apply primarily to the content of the text files that contain registry data that you apply by using regini.exe.
-
Use the semicolon as an end-of-line comment character. It must be the first non-blank character in a line.
-
Use the backslash to indicate continuation of a line. The command will ignore all characters from the backslash up to (but not including) the first non-blank character of the next line. If you include more than one space before the backslash, it is replaced by a single space.
-
Use hard-tab characters to control indentation. This indentation indicates the tree structure of the registry keys; however, these characters are converted to a single space regardless of their position.
Additional References
MIT License. Copyright (c) 2020-2021 Strontic.