282731b2d3212f21d8777946823514a65eeb73e2b5edba9c15f1f101183e98e5

Analysis

max time kernel
149s
max time network
153s
platform
windows11-21h2_x64
resource
win11-20240802-en
resource tags

arch:x64arch:x86image:win11-20240802-enlocale:en-usos:windows11-21h2-x64system
submitted
05/08/2024, 09:14

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General

Target

x86/CommonProgramFiles/SpeechEngines/Microsoft/TTS20/en-US/MSTTSFrontendENU.dll
Size

268KB
MD5

70e764e0ac98ce3ded9eaab2a93716f5
SHA1

a44f451ca7cb5c70b8949956cfc76dfb65d604a7
SHA256

4dc0c318603eddd69afac477b189ce51be8be7a767dd34cf70a29cb5f9a8891b
SHA512

756582c669fd8ca28051ce5f7c813a46b6a0e9db74ea915ba47bd6bcfe0113058ac44d73af2ca64235125c007c2ebfc56d2282cb39c68ddfaa7e79d5d015dc21
SSDEEP

3072:sRs7uyofuFWkjNi0ugCUFkhxP8m8ZfDfisNzyzgHgrKsh/tf3BAQuvsHUu3lI+v2:ssNBQidTQ1BAQu4UuO9qFxH7jEpGF

Score

3^/10

discovery

Malware Config

Signatures

System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	regsvr32.exe

Modifies registry class 37 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSTTSFrontendENU.MSTTSFrontendENU.2\CLSID\ = "{55DFB4F7-4175-4B3B-B247-D9B399ADB119}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\MSTTSFrontendENU.MSTTSFrontendENU	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSTTSFrontendENU.MSTTSFrontendENU\ = "MSTTS Frontend Class (ENU)"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{55DFB4F7-4175-4B3B-B247-D9B399ADB119}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{55DFB4F7-4175-4B3B-B247-D9B399ADB119}\VersionIndependentProgID	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{55DFB4F7-4175-4B3B-B247-D9B399ADB119}\VersionIndependentProgID\ = "MSTTSFrontendENU.MSTTSFrontendENU"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{55DFB4F7-4175-4B3B-B247-D9B399ADB119}\InprocServer32\ThreadingModel = "Both"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\MSTTSFrontendENU.MSTTSFrontendENU.2	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{A7201431-623E-44A7-A85C-D13AFC0F6AA6}\2.0\FLAGS\ = "0"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{A7201431-623E-44A7-A85C-D13AFC0F6AA6}\2.0\0	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{A7201431-623E-44A7-A85C-D13AFC0F6AA6}\2.0\HELPDIR\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\x86\\CommonProgramFiles\\SpeechEngines\\Microsoft\\TTS20\\en-US"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{55DFB4F7-4175-4B3B-B247-D9B399ADB119}\TypeLib	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{55DFB4F7-4175-4B3B-B247-D9B399ADB119}\ProgID	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{55DFB4F7-4175-4B3B-B247-D9B399ADB119}\Programmable	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{55DFB4F7-4175-4B3B-B247-D9B399ADB119}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\x86\\CommonProgramFiles\\SpeechEngines\\Microsoft\\TTS20\\en-US\\MSTTSFrontendENU.dll"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSTTSFrontendENU.MSTTSFrontendENU.2\ = "MSTTS Frontend Class (ENU)"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\AppID\{94A98A75-F577-4B31-9379-6D3CCEA14866}\ = "MSTTSFrontendENU"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\AppID\{94A98A75-F577-4B31-9379-6D3CCEA14866}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{55DFB4F7-4175-4B3B-B247-D9B399ADB119}\InprocServer32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{A7201431-623E-44A7-A85C-D13AFC0F6AA6}\2.0	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSTTSFrontendENU.MSTTSFrontendENU\CurVer\ = "MSTTSFrontendENU.MSTTSFrontendENU.2"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{55DFB4F7-4175-4B3B-B247-D9B399ADB119}\ = "MSTTS Frontend Class (ENU)"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{A7201431-623E-44A7-A85C-D13AFC0F6AA6}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{A7201431-623E-44A7-A85C-D13AFC0F6AA6}\2.0\0\win32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\MSTTSFrontendENU.MSTTSFrontendENU.2\CLSID	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{55DFB4F7-4175-4B3B-B247-D9B399ADB119}\AppID = "{94A98A75-F577-4B31-9379-6D3CCEA14866}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{A7201431-623E-44A7-A85C-D13AFC0F6AA6}\2.0\FLAGS	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{A7201431-623E-44A7-A85C-D13AFC0F6AA6}\2.0\0\win32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\x86\\CommonProgramFiles\\SpeechEngines\\Microsoft\\TTS20\\en-US\\MSTTSFrontendENU.dll"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\AppID\MSTTSFrontendENU.DLL	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{55DFB4F7-4175-4B3B-B247-D9B399ADB119}\TypeLib\ = "{A7201431-623E-44A7-A85C-D13AFC0F6AA6}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{A7201431-623E-44A7-A85C-D13AFC0F6AA6}\2.0\ = "MSTTSFrontendENU 2.0 Type Library"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\MSTTSFrontendENU.MSTTSFrontendENU\CLSID	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSTTSFrontendENU.MSTTSFrontendENU\CLSID\ = "{55DFB4F7-4175-4B3B-B247-D9B399ADB119}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\MSTTSFrontendENU.MSTTSFrontendENU\CurVer	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{55DFB4F7-4175-4B3B-B247-D9B399ADB119}\ProgID\ = "MSTTSFrontendENU.MSTTSFrontendENU.2"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{A7201431-623E-44A7-A85C-D13AFC0F6AA6}\2.0\HELPDIR	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\AppID\MSTTSFrontendENU.DLL\AppID = "{94A98A75-F577-4B31-9379-6D3CCEA14866}"	regsvr32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4884 wrote to memory of 1580	4884	regsvr32.exe	78
PID 4884 wrote to memory of 1580	4884	regsvr32.exe	78
PID 4884 wrote to memory of 1580	4884	regsvr32.exe	78

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\x86\CommonProgramFiles\SpeechEngines\Microsoft\TTS20\en-US\MSTTSFrontendENU.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:4884
- C:\Windows\SysWOW64\regsvr32.exe
  /s C:\Users\Admin\AppData\Local\Temp\x86\CommonProgramFiles\SpeechEngines\Microsoft\TTS20\en-US\MSTTSFrontendENU.dll
  2⤵
  - System Location Discovery: System Language Discovery
  - Modifies registry class
  PID:1580

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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