This article is about
Post Exploitation using the WMIC (Windows Management Instrumentation Command
Line). When an Attacker gain a meterpreter session on a Remote PC, then he/she
can enumerate a huge amount of information and make effective changes using the
WMI Command Line.
To do this, we will
first get the meterpreter session on the Remote PC which you can learn from here. After
gaining the session, escalate its privilege to Administrator which you can
learn from here.
WMIC command line can
be accessed through the windows cmd. To access that type “shell” in the meterpreter shell.
Now let’s look at the
wmic commands and their working
WMIC
This command shows the global options which are used in the wmic
command. WMIC Global Options are used to set properties of the WMIC
environment. With the combination of global options and the aliases than we can
manage the system through the wmic environment.
Syntax/Example:
wmic /?
Get System Roles, User Name, and
Manufacturer
We can enumerates lots of information about the Victim System including
its Name, Domain, Manufacturer, Model Number and Much more through the computer
system alias of wmic command.
We are adding following filters to get specific result.
Roles: It gives
all the roles that the victim system play like Workstation, Server, Browser
etc.
Manufacturer: It give
the manufacturer of the system, sometimes there are certain vulnerabilities in
a particular model of a particular model. So we can use this information to
search for any direct vulnerabilities.
UserName: It gives the username of the system which is proven very
helpful as we can differentiate between administrators and normal users
[/format:list]: To sort the output in a list format.
Example:
wmic computersystem get Name, Domain, Manufacturer, Model, Username, Roles
/format:list
Get the SIDs
To enumerate these SIDs we will use group alias of wmic.
Syntax/Example:
wmic group get Caption, InstallDate, LocalAccount, Domain, SID, Status
As shown in the below image here we have found the Account Name,
Domain, Local Group Member status, SID and their status.
We can create many process on the victim’s system
using the process alias of wmic command.
This is helpful in running any backdoor or
fill up the memory of the victim’s system.
Syntax: wmic
process call create "[Process Name]"
Example: wmic process call create
"taskmgr.exe"
As you can see in the below screenshot that
this command not only create a process but also gives the “process id” so that we can manipulate that process according to our
need.
Note: if the
process creates a window like Task Manager, cmd, etc. then this command will
open up that window on victim’s system and create suspicion in the mind of
victim.
Change Priority of a Process
We can change priority of any process running on the
victim’s system with the help of process alias of wmic command.
This is an important feature because it can be used
manipulate processes as we can increase the priority of any process of our
choice or decrease priority of any process. Decreasing the priority of any
process can result in crashing of that particular application and increasing
may crash the overall system.
Example:
wmic process where name=”explorer.exe” call set priority 64
Terminate a process
We can terminate process running on the victim’s system with the
help of process alias of wmic command.
Example:
wmic process where name=”explorer.exe” call terminate
Get a list of Executable Files
We can get a list which contains the location of the executable
files other than that of windows.
Example:
wmic process where “NOT ExecutablePath LIKE ‘%Windows%’” GET ExecutablePath
Get Folder Properties
To extract the basic information about a folder on the victim’s
system we can use fsdir
alias of wmic command line.
It can enumerate following information about a folder:
Compressed, CompressionMethod, Creation Date, File Size, Readable,
Writable, System File or not, Encrypted, Encryption Type and much more.
Example:
wmic fsdir where=”drive=’c:’ and filename=’test’” get /format:list
Get File Properties
To extract the basic information about a file on the victim’s
system we can use datafile
alias of wmic command line.
Compressed, CompressionMethod, Creation Date, File Size, Readable,
Writable, System File or not, Encrypted, Encryption Type and much more.
Syntax: wmic datafile where=’[Path of File]’ get /format:list
Example:
wmic datafile where name='c:\\windows\\system32\\demo\\demo.txt' get
/format:list
Locate System Files
Extract paths of all the important system files like temp folder,
win directory and much more.
Example:
wmic environment get Description, VariableValue
From given below image you can read variablevalue with their given
description.
Get a list of Installed Applications
We can get a list of applications or softwares installed on the
victim’s system
Example:
wmic product get name
Get a list of Running Services
We can fetch the list of services which are running and services
which start automatically or not.
Example: wmic
service where (state=”running”) get caption, name, startmode
From given below image you can observe startmode either as “Auto”
or as “Manual” and state “Running” for given services.
Get Startup Services
We can enumerate startup services using startup alias for all the
services that run during the windows startup.
Example:
wmic startup get Caption, Command
Get System Driver Details
We can enumerate Driver Details like Name, Path and Service Type
using the sysdrive alias.
This command gives the path of the driver file, its status
(Running or Stopped), Its Type (Kernel or File System)
Example: wmic
sysdriver get Caption, Name, PathName, ServiceType, State, Status /format:list
Get OS Details
We can enumerate the location of the victim by using the time zone
in which the system is set, this can be extracted using the os alias.
We also get the Last Boot Update Time and The Number of Registered
Users and Number of Processors and information about Physical & Virtual
Memory, all using os alias.
Example: wmic
os get CurrentTimeZone, FreePhysicalMemory, FreeVirtualMemory, LastBootUpdate,
NumberofProcesses, NumberofUsers, Organization, RegisteredUsers, Status
/format:list
We can use
the baseboard alias of wmic command
line to enumerate the motherboard details of victim’s system. Things we can
enumerate are Motherboard Manufacturer, Serial Number and Version
Example:
wmic baseboard, get Manufacturer, Product, SerialNumber, Version
Get BIOS Serial Number
We can use the bios alias
of wmic command line to enumerate the bios details of victim’s system.
Example:
wmic bios, get serialNumber
From given below image you can check bios serial number that we
have enumerate of victim’s system.
Get Hard Disk Details
We can enumerate information about the System Hard Disk using the diskdrive alias.
We get to know the Interface Type, Manufacturer and Model Name,
all through this command.
Syntax:
wmic diskdrive get Name, Manufacturer, Model, InterfaceType, MediaLoaded,
MediaType /format:list
Get Hard Disk Partitions Details
We can get the information about the Hard Disk Partitions using
the logicaldisk alias.
We get the name, compression status, File System (NTFS, FAT) and
much more all using this command.
Syntax:
wmic logicaldisk where drivetype=3 get Name, Compressed, Description,
FileSystem, FreeSpace, SupportsDiskQuotas, VolumeDirty, VolumeName
From given below image you can read description of disk along with
filesystem i.e. NTFS and available free space and many more details as per your
requirement.
We can get
the information about the Memory Cache using memcache alias. We can get the name, block size, purpose and much
more all using this command.
Example:
wmic memcache get Name, BlockSize, Purpose, MaxCacheSize, Status
From given
below image you can observe here it is showing details of two cache memory.
Get Memory Chip Details
We can get the information about the RAM using the memorychip alias.
We get the Serial number of the RAM without removing the RAM or
physically being near the system using this command.
Example: wmic
memorychip get PartNumber, SerialNumber
Detect If victim system is a
host OS or installed via VMware
We can enumerate information about the victim’s system that
weather it is running a host operating system i.e. running by directly
installing on hard drive or running virtually using VMware or Virtual Box.
Syntax:
wmic onboarddevice get Desciption, DeviceType, Enabled, Status /format:list
Here from given below image if you will observe the highlighted text
then you see it showing VMware in description.
User Account Management
Lock a
User Account
We can restrict a local user from using its account by using
useraccount alias, here we are going to lock a User Account.
Example:
wmic useraccount where name=’demo’ set disabled=false
From
given below image you can observe that we had successfully locked the user
account for user “demo”.
We can remove a local user’s requirement of its
password for login by using useraccount
alias
Example:
wmic useraccount where name=’demo’ set PasswordRequired=false
Rename a
user account
We can rename a local user by using useraccount alias
Example:
wmic useraccount where name=’demo’ rename hacker
Restrict
user from changing a password
We can restrict a local user from changing its password by using useraccount alias
Example:
wmic useraccount where name=’hacker’ set passwordchangeable=false
Get Antivirus Details
We can enumerate the antivirus installed on the victim’s system
along with its location and version.
Syntax:
wmic /namespace:\\root\securitycenter2 path antivirusproduct GET displayName,
productState, pathToSignedProductExe
Clear System Logs
Wmic can be used to delete system logs using the nteventlog alias. It is a very simple
command where we mention the name of log and then using an option nteventlog and
clear the log file. It can be an effective command while cleaning up after
hacking any system.
Syntax: wmic
nteventlog where filename='[logfilename]' cleareventlog
Example:
wmic nteventlog where filename='system' cleareventlog
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