ARP.EXE

  • File Path: C:\Windows\system32\ARP.EXE
  • Description: TCP/IP Arp Command

Hashes

Type Hash
MD5 1E065F9F13F4A59292BE9B2EC513D7A6
SHA1 E785019523B22DBDEEA30179FB4FC80877B593A6
SHA256 CCA1F962F9435330C556F07A1745D743AD7ACAD7561C4C79420B0BF16C8E1D0A
SHA384 87AECC4A3D25EBF019CCADCE6B048B252F49CD21A281EEACE063E55EBB8B27FF86C31A98CFE673F5B7759870BA155D7A
SHA512 019E96D0AB6A198EEB0351A5A4F169B6DDD8B8773B91C26930264D90D0CCE220A52414E5816F58F113D2683B408FD812ED140598896A6FD78455F480D1651CD8
SSDEEP 384:IopBYhDEmOoFIXanzv2jWL7pU6O04mpIxEhTVIMSnh7mC37PuIub2LWSOmW:Io4hDEWniO7pU6O3u0nhTPutb/

Runtime Data

Usage (stdout):


Displays and modifies the IP-to-Physical address translation tables used by
address resolution protocol (ARP).

ARP -s inet_addr eth_addr [if_addr]
ARP -d inet_addr [if_addr]
ARP -a [inet_addr] [-N if_addr] [-v]

  -a            Displays current ARP entries by interrogating the current
                protocol data.  If inet_addr is specified, the IP and Physical
                addresses for only the specified computer are displayed.  If
                more than one network interface uses ARP, entries for each ARP
                table are displayed.
  -g            Same as -a.
  -v            Displays current ARP entries in verbose mode.  All invalid 
                entries and entries on the loop-back interface will be shown.
  inet_addr     Specifies an internet address.
  -N if_addr    Displays the ARP entries for the network interface specified
                by if_addr.
  -d            Deletes the host specified by inet_addr. inet_addr may be 
                wildcarded with * to delete all hosts.
  -s            Adds the host and associates the Internet address inet_addr
                with the Physical address eth_addr.  The Physical address is
                given as 6 hexadecimal bytes separated by hyphens. The entry
                is permanent.
  eth_addr      Specifies a physical address.
  if_addr       If present, this specifies the Internet address of the
                interface whose address translation table should be modified.
                If not present, the first applicable interface will be used.
Example:
  > arp -s 157.55.85.212   00-aa-00-62-c6-09  .... Adds a static entry.
  > arp -a                                    .... Displays the arp table.

Signature

  • Status: Signature verified.
  • Serial: 33000001733031072665B8B9B3000000000173
  • Thumbprint: 14590DC5C3AAF238FCFD7785B4B93F4071402C34
  • 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: arp.exe.mui
  • Product Name: Microsoft Windows Operating System
  • Company Name: Microsoft Corporation
  • File Version: 10.0.14393.0 (rs1_release.160715-1616)
  • Product Version: 10.0.14393.0
  • Language: English (United States)
  • Legal Copyright: Microsoft Corporation. All rights reserved.

Possible Misuse

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

Source Source File Example License
sigma proc_creation_win_multiple_suspicious_cli.yml - arp.exe DRL 1.0

Additional Info*

*The information below is copied from MicrosoftDocs, which is maintained by Microsoft. Available under CC BY 4.0 license.

arp

Applies to: Windows Server 2022, Windows Server 2019, Windows Server 2016, Windows Server 2012 R2, Windows Server 2012

Displays and modifies entries in the Address Resolution Protocol (ARP) cache. The ARP cache contains one or more tables that are used to store IP addresses and their resolved Ethernet or Token Ring physical addresses. There is a separate table for each Ethernet or Token Ring network adapter installed on your computer. Used without parameters, arp displays help information.

Syntax

arp [/a [<inetaddr>] [/n <ifaceaddr>]] [/g [<inetaddr>] [-n <ifaceaddr>]] [/d <inetaddr> [<ifaceaddr>]] [/s <inetaddr> <etheraddr> [<ifaceaddr>]]

Parameters

Parameter Description
[/a [<inetaddr>] [/n <ifaceaddr>] Displays current arp cache tables for all interfaces. The /n parameter is case-sensitive. To display the arp cache entry for a specific IP address, use arp /a with the inetaddr parameter, where inetaddr is an IP address. If inetaddr is not specified, the first applicable interface is used. To display the arp cache table for a specific interface, use the /n ifaceaddr parameter in conjunction with the /a parameter where inetaddr is the IP address assigned to the interface.
[/g [<inetaddr>] [/n <ifaceaddr>] Identical to /a.
[/d <inetaddr> [<ifaceaddr>] Deletes an entry with a specific IP address, where inetaddr is the IP address. To delete an entry in a table for a specific interface, use the ifaceaddr parameter where ifaceaddr is the IP address assigned to the interface. To delete all entries, use the asterisk (*) wildcard character in place of inetaddr.
[/s <inetaddr> <etheraddr> [<ifaceaddr>] Adds a static entry to the arp cache that resolves the IP address inetaddr to the physical address etheraddr. To add a static arp cache entry to the table for a specific interface, use the ifaceaddr parameter where ifaceaddr is an IP address assigned to the interface.
/? Displays help at the command prompt.

Remarks

  • The IP addresses for inetaddr and ifaceaddr are expressed in dotted decimal notation.

  • The physical address for etheraddr consists of six bytes expressed in hexadecimal notation and separated by hyphens (for example, 00-AA-00-4F-2A-9C).

  • Entries added with the /s parameter are static and do not time out of the arp cache. The entries are removed if the TCP/IP protocol is stopped and started. To create permanent static arp cache entries, place the appropriate arp commands in a batch file and use Scheduled Tasks to run the batch file at startup.

Examples

To display the arp cache tables for all interfaces, type:

arp /a

To display the arp cache table for the interface that is assigned the IP address 10.0.0.99, type:

arp /a /n 10.0.0.99

To add a static arp cache entry that resolves the IP address 10.0.0.80 to the physical address 00-AA-00-4F-2A-9C, type:

arp /s 10.0.0.80 00-AA-00-4F-2A-9C

Additional References

MIT License. Copyright (c) 2020-2021 Strontic.