ed3c6ed6d3574faaa2802b2b3158f7a0e28d4a7df192daf323fb18b5e435ee4c

Analysis

max time kernel
118s
max time network
122s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
19-12-2024 04:25

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General

Target

webmvorbisdecoder.dll
Size

364KB
MD5

eda07083af5b6608cb5b7c305d787842
SHA1

d1703c23522d285a3ccdaf7ba2eb837d40608867
SHA256

c4683eb09d65d692ca347c0c21f72b086bd2faf733b13234f3a6b28444457d7d
SHA512

be5879621d544c4e2c4b0a5db3d93720623e89e841b2982c7f6c99ba58d30167e0dd591a12048ed045f19ec45877aa2ef631b301b903517effa17579c4b7c401
SSDEEP

6144:faoH9sDRlDLD0GDkEp00tc6TKUOmrRK1jRsAOO04sAO88RtOd:noPH0GgEp0gVd1ValsQXsHOd

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 23 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{ED311103-5211-11DF-94AF-0026B977EEAA}\ = "WebM Vorbis Decoder Filter"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{ED311103-5211-11DF-94AF-0026B977EEAA}\VersionIndependentProgID	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Webm.VorbisDecoder\CurVer	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Webm.VorbisDecoder.1\CLSID	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{083863F1-70DE-11D0-BD40-00A0C911CE86}\Instance\{ED311103-5211-11DF-94AF-0026B977EEAA}\FriendlyName = "WebM Vorbis Decoder Filter"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{083863F1-70DE-11D0-BD40-00A0C911CE86}\Instance\{ED311103-5211-11DF-94AF-0026B977EEAA}\CLSID = "{ED311103-5211-11DF-94AF-0026B977EEAA}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{ED311103-5211-11DF-94AF-0026B977EEAA}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Webm.VorbisDecoder	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Webm.VorbisDecoder\CLSID	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Webm.VorbisDecoder\CLSID\ = "{ED311103-5211-11DF-94AF-0026B977EEAA}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Webm.VorbisDecoder\CurVer\ = "Webm.VorbisDecoder.1"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Webm.VorbisDecoder.1	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Webm.VorbisDecoder.1\ = "WebM Vorbis Decoder Filter"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{083863F1-70DE-11D0-BD40-00A0C911CE86}\Instance\{ED311103-5211-11DF-94AF-0026B977EEAA}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{ED311103-5211-11DF-94AF-0026B977EEAA}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\webmvorbisdecoder.dll"	regsvr32.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{083863F1-70DE-11D0-BD40-00A0C911CE86}\Instance\{ED311103-5211-11DF-94AF-0026B977EEAA}\FilterData = 0200000000006000020000000000000030706933000000000000000001000000000000000000000030747933000000006000000070000000317069330800000000000000010000000000000000000000307479330000000060000000800000006175647300001000800000aa00389b710bd12f8d41586b4a8905588fec1aded90300000000001000800000aa00389b71	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{ED311103-5211-11DF-94AF-0026B977EEAA}\InprocServer32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{ED311103-5211-11DF-94AF-0026B977EEAA}\InprocServer32\ThreadingModel = "Both"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{ED311103-5211-11DF-94AF-0026B977EEAA}\ProgID	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{ED311103-5211-11DF-94AF-0026B977EEAA}\ProgID\ = "Webm.VorbisDecoder.1"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Webm.VorbisDecoder\ = "WebM Vorbis Decoder Filter"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Webm.VorbisDecoder.1\CLSID\ = "{ED311103-5211-11DF-94AF-0026B977EEAA}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{ED311103-5211-11DF-94AF-0026B977EEAA}\VersionIndependentProgID\ = "Webm.VorbisDecoder"	regsvr32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2388 wrote to memory of 2352	2388	regsvr32.exe	30
PID 2388 wrote to memory of 2352	2388	regsvr32.exe	30
PID 2388 wrote to memory of 2352	2388	regsvr32.exe	30
PID 2388 wrote to memory of 2352	2388	regsvr32.exe	30
PID 2388 wrote to memory of 2352	2388	regsvr32.exe	30
PID 2388 wrote to memory of 2352	2388	regsvr32.exe	30
PID 2388 wrote to memory of 2352	2388	regsvr32.exe	30

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\webmvorbisdecoder.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:2388
- C:\Windows\SysWOW64\regsvr32.exe
  /s C:\Users\Admin\AppData\Local\Temp\webmvorbisdecoder.dll
  2⤵
  - System Location Discovery: System Language Discovery
  - Modifies registry class
  PID:2352

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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