Malware Analysis Report

2024-12-07 14:55

Sample ID 241005-m1a1qa1amn
Target 9998034b4a25a37c86651d85306be7b1fe949be3df3ccbb0ede943bbef414f8a
SHA256 9998034b4a25a37c86651d85306be7b1fe949be3df3ccbb0ede943bbef414f8a
Tags
defense_evasion discovery exploit
score
8/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
8/10

SHA256

9998034b4a25a37c86651d85306be7b1fe949be3df3ccbb0ede943bbef414f8a

Threat Level: Likely malicious

The file 9998034b4a25a37c86651d85306be7b1fe949be3df3ccbb0ede943bbef414f8a was found to be: Likely malicious.

Malicious Activity Summary

defense_evasion discovery exploit

Possible privilege escalation attempt

Modifies file permissions

File and Directory Permissions Modification: Windows File and Directory Permissions Modification

Indicator Removal: File Deletion

Drops file in System32 directory

Unsigned PE

Checks processor information in registry

Modifies data under HKEY_USERS

Suspicious behavior: LoadsDriver

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

Suspicious use of FindShellTrayWindow

Enumerates system info in registry

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-10-05 10:55

Signatures

Unsigned PE

Description Indicator Process Target
N/A N/A N/A N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-10-05 10:55

Reported

2024-10-05 10:58

Platform

win7-20240903-en

Max time kernel

0s

Max time network

3s

Command Line

"C:\Users\Admin\AppData\Local\Temp\9998034b4a25a37c86651d85306be7b1fe949be3df3ccbb0ede943bbef414f8a.exe"

Signatures

Suspicious use of FindShellTrayWindow

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\9998034b4a25a37c86651d85306be7b1fe949be3df3ccbb0ede943bbef414f8a.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\9998034b4a25a37c86651d85306be7b1fe949be3df3ccbb0ede943bbef414f8a.exe

"C:\Users\Admin\AppData\Local\Temp\9998034b4a25a37c86651d85306be7b1fe949be3df3ccbb0ede943bbef414f8a.exe"

C:\Windows\system32\cmd.exe

C:\Windows\system32\cmd.exe /c takeown /f "C:\Windows\System32\ntoskrnl.exe"

Network

N/A

Files

N/A

Analysis: behavioral2

Detonation Overview

Submitted

2024-10-05 10:55

Reported

2024-10-05 10:56

Platform

win10v2004-20240802-en

Max time kernel

61s

Max time network

3s

Command Line

"C:\Users\Admin\AppData\Local\Temp\9998034b4a25a37c86651d85306be7b1fe949be3df3ccbb0ede943bbef414f8a.exe"

Signatures

Possible privilege escalation attempt

exploit
Description Indicator Process Target
N/A N/A C:\Windows\system32\takeown.exe N/A
N/A N/A C:\Windows\system32\icacls.exe N/A

Modifies file permissions

discovery
Description Indicator Process Target
N/A N/A C:\Windows\system32\icacls.exe N/A
N/A N/A C:\Windows\system32\takeown.exe N/A

File and Directory Permissions Modification: Windows File and Directory Permissions Modification

defense_evasion

Indicator Removal: File Deletion

defense_evasion

Drops file in System32 directory

Description Indicator Process Target
File opened for modification C:\Windows\system32\config\systemprofile\AppData\Local\Microsoft\Office\OTele\officeclicktorun.exe.db C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe N/A
File opened for modification C:\Windows\system32\config\systemprofile\AppData\Local\Microsoft\Office\OTele\officeclicktorun.exe.db-wal C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe N/A
File opened for modification C:\Windows\system32\config\systemprofile\AppData\Local\Microsoft\Office\OTele\officeclicktorun.exe.db-shm C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe N/A

Checks processor information in registry

Description Indicator Process Target
Key opened \REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0 C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe N/A

Enumerates system info in registry

Description Indicator Process Target
Key opened \REGISTRY\MACHINE\Hardware\Description\System\BIOS C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe N/A

Modifies data under HKEY_USERS

Description Indicator Process Target
Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Office\16.0\Common\TrustCenter\Experimentation C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe N/A
Key deleted \REGISTRY\USER\.DEFAULT\Software\Microsoft\Office\16.0\Common\ClientTelemetry\RulesMetadata\officeclicktorun.exe\ULSMonitor C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Office\16.0\Common\ClientTelemetry\RulesMetadata\officeclicktorun.exe\ULSMonitor C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe N/A
Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Office\16.0\Common\ClientTelemetry\RulesMetadata\officeclicktorun.exe\ULSMonitor\ULSTagIds0 = "5804129,7202269,17110992,41484365,39965824,7153487,17110988,508368333,17962391,17962392,3462423,3702920,3700754,3965062,4297094,7153421,18716193,7153435,7202265,20502174,6308191,18407617" C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe N/A
Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Office\16.0\Common\ClientTelemetry\RulesMetadata\officeclicktorun.exe\ULSMonitor\ULSCategoriesSeverities = "1329 50,1329 10,1329 15,1329 100,1329 6" C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Office\16.0\Common\ExperimentConfigs\Ecs\officeclicktorun C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe N/A
Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Office\16.0\Common\LanguageResources\EnabledEditingLanguages\en-US = "2" C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe N/A
Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Office\16.0\Common\LanguageResources\EnabledEditingLanguages\en-US = "1" C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Office\16.0\Common\ExperimentConfigs\Ecs\officeclicktorun\ConfigContextData C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe N/A
Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1" C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe N/A
Key deleted \REGISTRY\USER\.DEFAULT\Software\Microsoft\Office\16.0\Common\ClientTelemetry\RulesMetadata\officeclicktorun.exe C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Office\16.0\Common\ClientTelemetry C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Office\16.0\Common\ExperimentEcs\Overrides C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Office\16.0\Common\ExperimentConfigs\ExternalFeatureOverrides\officeclicktorun C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Office\16.0\Common\ExperimentConfigs\FirstSession\officeclicktorun C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Office\16.0 C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Office\16.0\Common\ClientTelemetry\RulesMetadata C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Office\16.0\Common\ExperimentConfigs\Ecs C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Office\16.0\Common\ExperimentEcs\all\Overrides C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe N/A
Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1" C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe N/A
Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0" C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Office\16.0\Common\ClientTelemetry\RulesMetadata\officeclicktorun.exe C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Office\16.0\Common C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Office\16.0\Common\ExperimentEcs\officeclicktorun\Overrides C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe N/A
Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1" C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe N/A

Suspicious behavior: LoadsDriver

Description Indicator Process Target
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeTakeOwnershipPrivilege N/A C:\Windows\system32\takeown.exe N/A

Suspicious use of FindShellTrayWindow

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\9998034b4a25a37c86651d85306be7b1fe949be3df3ccbb0ede943bbef414f8a.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\9998034b4a25a37c86651d85306be7b1fe949be3df3ccbb0ede943bbef414f8a.exe

"C:\Users\Admin\AppData\Local\Temp\9998034b4a25a37c86651d85306be7b1fe949be3df3ccbb0ede943bbef414f8a.exe"

C:\Windows\system32\cmd.exe

C:\Windows\system32\cmd.exe /c takeown /f "C:\Windows\System32\ntoskrnl.exe"

C:\Windows\system32\takeown.exe

takeown /f "C:\Windows\System32\ntoskrnl.exe"

C:\Windows\system32\cmd.exe

C:\Windows\system32\cmd.exe /c icacls "C:\Windows\System32\ntoskrnl.exe" /grant Admin:F

C:\Windows\system32\icacls.exe

icacls "C:\Windows\System32\ntoskrnl.exe" /grant Admin:F

C:\Windows\system32\cmd.exe

C:\Windows\system32\cmd.exe /c del "C:\Windows\System32\ntoskrnl.exe" /f /s /q

C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe

"C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe" /service

C:\Windows\system32\svchost.exe

C:\Windows\system32\svchost.exe -k netsvcs -p -s ProfSvc

C:\Windows\system32\svchost.exe

C:\Windows\system32\svchost.exe -k netsvcs -p -s UserManager

C:\Windows\System32\svchost.exe

C:\Windows\System32\svchost.exe -k netsvcs -p -s Themes

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp

Files

N/A