338584845609e84384287b9b188905df6b108a7567c91bd924e16c33b2544e9a

Analysis

max time kernel
148s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
19-12-2024 13:48

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General

Target

webmvorbisencoder.dll
Size

859KB
MD5

642dc7e57f0c962b9db4c8fb346bc5a7
SHA1

acee24383b846f7d12521228d69135e5704546f6
SHA256

63b4b5db4a96a8abec82b64034f482b433cd4168c960307ac5cc66d2fbf67ede
SHA512

fb163a0ce4e3ad0b0a337f5617a7bf59070df05cc433b6463384e8687af3edc197e447609a0d86fe25ba3ee2717fd470f2620a8fc3a2998a7c3b3a40530d0bae
SSDEEP

12288:vTAPYZEyRr+NDnaLyx2lz8MSjtX08pYRc29qcQmsGahsQZsbRN9S:YYF+Eyx2lzujtEIYRc1cQmsGa7ON9S

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 28 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Webm.VorbisEncoder\CLSID	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Webm.VorbisEncoder.1\CLSID\ = "{ED311107-5211-11DF-94AF-0026B977EEAA}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{33D9A761-90C8-11d0-BD43-00A0C911CE86}\Instance\{ED311107-5211-11DF-94AF-0026B977EEAA}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{ED311107-5211-11DF-94AF-0026B977EEAA}\ = "WebM Vorbis Encoder Filter"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Webm.VorbisEncoder\CurVer	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Webm.VorbisEncoder.1	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{33D9A761-90C8-11D0-BD43-00A0C911CE86}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Webm.VorbisEncoder	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Webm.VorbisEncoder\CurVer\ = "Webm.VorbisEncoder.1"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Webm.VorbisEncoder.1\ = "WebM Vorbis Encoder Filter"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{33D9A761-90C8-11d0-BD43-00A0C911CE86}\Instance\{ED311107-5211-11DF-94AF-0026B977EEAA}\FriendlyName = "WebM Vorbis Encoder Filter"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{ED311107-5211-11DF-94AF-0026B977EEAA}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\webmvorbisencoder.dll"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Webm.VorbisEncoder\ = "WebM Vorbis Encoder Filter"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{33D9A761-90C8-11D0-BD43-00A0C911CE86}\Instance\{ED311107-5211-11DF-94AF-0026B977EEAA}	regsvr32.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{33D9A761-90C8-11d0-BD43-00A0C911CE86}\Instance\{ED311107-5211-11DF-94AF-0026B977EEAA}\FilterData = 0200000000002000020000000000000030706933000000000000000001000000000000000000000030747933000000006000000070000000317069330800000000000000010000000000000000000000307479330000000060000000800000006175647300001000800000aa00389b710300000000001000800000aa00389b710bd12f8d41586b4a8905588fec1aded9	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{ED311107-5211-11DF-94AF-0026B977EEAA}\VersionIndependentProgID\ = "Webm.VorbisEncoder"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{ED311107-5211-11DF-94AF-0026B977EEAA}\ProgID\ = "Webm.VorbisEncoder.1"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Webm.VorbisEncoder.1\CLSID	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{33D9A761-90C8-11d0-BD43-00A0C911CE86}\Instance	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{ED311107-5211-11DF-94AF-0026B977EEAA}\VersionIndependentProgID	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{ED311107-5211-11DF-94AF-0026B977EEAA}\InprocServer32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{ED311107-5211-11DF-94AF-0026B977EEAA}\InprocServer32\ThreadingModel = "Both"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{ED311107-5211-11DF-94AF-0026B977EEAA}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{ED311107-5211-11DF-94AF-0026B977EEAA}\ProgID	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Webm.VorbisEncoder\CLSID\ = "{ED311107-5211-11DF-94AF-0026B977EEAA}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{33D9A761-90C8-11d0-BD43-00A0C911CE86}\Instance\{ED311107-5211-11DF-94AF-0026B977EEAA}\CLSID = "{ED311107-5211-11DF-94AF-0026B977EEAA}"	regsvr32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1992 wrote to memory of 784	1992	regsvr32.exe	84
PID 1992 wrote to memory of 784	1992	regsvr32.exe	84
PID 1992 wrote to memory of 784	1992	regsvr32.exe	84

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\webmvorbisencoder.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:1992
- C:\Windows\SysWOW64\regsvr32.exe
  /s C:\Users\Admin\AppData\Local\Temp\webmvorbisencoder.dll
  2⤵
  - System Location Discovery: System Language Discovery
  - Modifies registry class
  PID:784

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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