Curing Commands

Once you receive a report on the state of the system, you can analyze the received data (see Search and Analyze) with the help of filters, apply actions to selected threats and create the curing FixIt! tool with a specified curing script (see Figure 19).

fixit_cure

Figure 19. Creating the curing FixIt! tool

You can add curing commands to the script manually. Commands correspond to object types.

Listed below are all of the curing commands available. To view the list of curing commands in the web service, click commands Commands on the FixIt! tool tab.

Anti-rootkit scanner

Command

Description

disinfect <ID>

Cure the system object with the specified internal identifier. It is usually applied to objects of the Non-signature detections type. The identifier is assigned to the object while generating the report.

Example:

disinfect "10b2e828339cae479b1e5310b5980b717b7bcc57"

disinfect-reg <ID>

Cure the registry startup item with the specified internal identifier. It is applied to objects of the Scheduled tasks type. The identifier is assigned to the object while generating the report.

Example:

disinfect-reg "629387a5dbc86d60842f12af5c43ffa5816140cc"

Script commands

Command

Description

Signature detections

cure-file <Path>

Cure the file with the detected threat signature.

Actions (such as deleting, curing the content, replacing it, and additional system actions) are defined by the signature detected in the file. File location, its activity in the system, etc. are considered when curing by deleting. Additional actions such as pending delete, cleaning up startup items, blocking path till restart, etc. are performed if necessary.

If the file is clean when invoking the command, nothing happens.

Example:

cure-file C:\Windows\System32\malware.exe

ark-disinfect --imagepath <Path> / --sha256 <Value>

Neutralize the active object with a specified parameter.

If Path is specified, the file at the specified location will be deleted. The corresponding processes will also be stopped, if it is an executable file.

If a SHA256 value is specified, files among active processes will be searched for it. If any files are found, they will be deleted. The corresponding processes will also be stopped.

Example:

ark-disinfect --sha256 "71b969b079beba0db952399b918cdb6781aa5b5a1c3295129df92a0dd0fa457f"

File system

fs-move <Source> <Destination>

Move or rename the file or directory

If Destination is an existing directory, Source will be moved to Destination. Otherwise Source is renamed to Destination.

Example:

fs-move c:\con c:\lpt1

fs-remove <Path>

Delete the file or directory with the specified path.

All remaining links between the object and other element in the system will be specified at the end to the report.

Example:

fs-remove c:\con

fs-reset-acl [-r] <Path>

Set parent ACL for the file or directory.

If the -r option is specified, ACL is set recursively for each file and subdirectory.

If setting the ACL fails for the specified directory, the recursive traversal is stopped for the directory to avoid incorrect ACL setting for child elements.

Example:

fs-reset-acl -r c:\test1\test2

fs-clear-ads <Path>

Delete all ADS of the file or directory.

Example:

fs-clear-ads C:\windows\explorer.exe

Registry

reg-remove <SID> <Key path> [<Value>]

Delete value or key. SID is a profile specified in the registry.

All remaining links between the object and other element in the system will be specified at the end to the report.

Examples:

reg-remove HKLM SOFTWARE\Test

reg-remove HKLM SOFTWARE\Test Value

reg-set-value [-f] <SID> <Key path> <Value name> <Type> <Value data>

Set value for the specified key. SID is a profile specified in the registry.

If the -f option is specified, parent keys are created (if they do not exist) and the key is overwritten with the new type.

REG_SZ, REG_EXPAND_SZ type values are specified in string format.

REG_BINARY, REG_MULTI_SZ type values are specified in binary format.

REG_DWORD, REG_QWORD type values are specified in numeric format.

Examples:

reg-set-value -f HKLM SOFTWARE\Test TestSZ REG_SZ "Test"

reg-set-value -f HKLM SOFTWARE\Test TestBINARY REG_BINARY "5300530044005000530052005600"

reg-set-value -f HKLM SOFTWARE\Test TestDWORD REG_DWORD 0x1

fs-reset-acl [-r] <Key path>

Set parent ACL for the key.

If the -r option is specified, ACL is reset recursively for each subkey.

If setting the ACL fails for the specified directory, the recursive traversal is stopped for the directory to avoid incorrect ACL setting for child elements.

Example:

reg-reset-acl -r HKLM SOFTWARE\Test

Processes

proc-execute <Path> [<Arguments>]

Start the process with the specified arguments.

Example:

proc-execute c:\Windows\System32\win32calc.exe

proc-kill --pid <PID> / --imagename <Name> / --imagepath <Path> / --cmdline <Command line>

Terminate the specified process.

Example:

proc-kill --imagename win32calc.exe

proc-suspend --pid <PID> / --imagename <Name> / --imagepath <Path> / --cmdline <Command line>

Freeze the specified process.

Example:

proc-suspend --imagename win32calc.exe

Services

svc-start <Name>

Start the service with the specified name.

Example:

svc-start TestService

svc-stop <Name>

Stop the service with the specified name.

Example:

svc-stop TestService

svc-delete <Name>

Delete the service with the specified name.

Information about remaining references (service-related files) is added to the end of the report.

Example:

svc-delete TestService

svc-control <Name> <Control code>

Send the control code to the service with the specified name.

Example:

svc-control TestService 3

Scheduled tasks

task-run <Path>

Start the task with the specified name.

Example:

task-run \Microsoft\Windows\TestTask

task-delete <Path>

Delete the task with the specified name.

Information about unprocessed references from the object to files is added to the end of the report.

Example:

task-delete \Microsoft\Windows\TestTask

Layered service providers

lsp-delete <GUID>

Delete registered providers with the GUID specified in the registry.

Example:

lsp-delete {f9eab0c0-26d4-11d0-bbbf-00aa006c34e4}

Namespace service providers

nsp-delete <GUID>

Delete registered providers with the GUID specified in the registry.

Example:

nsp-delete {6642243a-3ba8-4aa6-baa5-2e0bd71fdd83}

WMI providers

wmi-delete <Namespace> <Class name> <Class ID> <Value>

Delete WMI object.

Example:

wmi-delete ROOT\subscription CommandLineEventConsumer {266c72e5-62e8-11d1-ad89-00c04fd8fdff} CommandLineTemplate

HOSTS file

hosts-clear <Path> <String> [<Strings>]

Comment out ("#" + line) the specified strings from the HOSTS file. Numbering starts with 1.

Example:

hosts-clear c:\Windows\System32\drivers\etc\hosts 44 45 46

hosts-default <Path>

Restore the standard HOSTS file for the system.

Example:

hosts-default c:\Windows\System32\drivers\etc\hosts

hosts-cure <Path>

Check all entries in eth HOSTS file and comment out those that contain malicious IP addresses. The command also adds the entry # cured by Dr.Web.

Example:

hosts-cure c:\Windows\System32\drivers\etc\hosts

Browser extensions and configuration

chromium-remove-ext <Browser> <SID> <Profile> <Extension ID>

Remove the browser extension for the specified profile.

Examples:

chromium-remove-ext Chrome S-1-5-21-120241661-1916511805-682617159-1001 default geadmilgigoffmcnlfdlpihockonlopf

chromium-remove-ext Opera S-1-5-21-120241661-1916511805-682617159-1001 "" geadmilgigoffmcnlfdlpihockonlopf

firefox-remove-ext <Browser> <SID> <Profile> <Extension ID>

Remove the browser extension for the specified profile.

Example:

firefox-remove-ext Firefox S-1-5-21-120241661-1916511805-682617159-1001 default default-theme@mozilla.org

chromium-clear <Browser> <SID> <Profile> <URL>

Remove the URL from browser configuration for the specified profile.

Example:

chromium-clear Chrome S-1-5-21-120241661-1916511805-682617159-1001 Default malware.com

firefox-clear <Browser> <SID> <Profile> <URL>

Remove the URL from browser configuration for the specified profile.

Example:

firefox-clear Firefox S-1-5-21-120241661-1916511805-682617159-1001 default malware.com

Dr.Web

drweb-remove

Remove Dr.Web software and/or all of its traces from the system.

Example:

drweb-remove