938d44be10097f59babeea2b2a388e8f71d663c4c543bb2bd599463f0a8b593b

Analysis

max time kernel
91s
max time network
142s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
06/09/2024, 13:58

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General

Target

Codecs/RealMediaSplitter.dll
Size

372KB
MD5

b91968f4f21d803d2467da89d9cd7275
SHA1

a0e1a676fe340f6bd211a1b40c0b6d8d1715d82e
SHA256

4287023170ab52ec3883af9a464d281358ae44225b25b101697c2ae66c82f935
SHA512

047470fda7ff9cda15cc4baaf0d5031bc8c37a9a7a827601c0e6db149f3af5149860afc45dd92c1a035f537971a70cb0f31372de12c080cecc3d93a89e6b8d65
SSDEEP

6144:sbH9JP/W0D2hzNqURg44nlHR0urOU48+EQHapawA9MDL:OJP/W0D2Pq/rpR0urOU4lExnn

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 39 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{765035B3-5944-4A94-806B-20EE3415F26F}\ = "RealMedia Source"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{238D0F23-5DC9-45A6-9BE2-666160C324DD}\ = "RealVideo Decoder"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Media Type\{E436EB83-524F-11CE-9F53-0020AF0BA770}\{57428EC6-C2B2-44A2-AA9C-28F0B6A5C48E}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Media Type\{E436EB83-524F-11CE-9F53-0020AF0BA770}\{57428EC6-C2B2-44A2-AA9C-28F0B6A5C48E}\0 = "0,4,,2E524D46"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Media Type\{E436EB83-524F-11CE-9F53-0020AF0BA770}\{57428EC6-C2B2-44A2-AA9C-28F0B6A5C48E}\Source Filter = "{E436EBB5-524F-11CE-9F53-0020AF0BA770}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{E21BE468-5C18-43EB-B0CC-DB93A847D769}\InprocServer32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{E21BE468-5C18-43EB-B0CC-DB93A847D769}\InprocServer32\ThreadingModel = "Both"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{765035B3-5944-4A94-806B-20EE3415F26F}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{083863F1-70DE-11D0-BD40-00A0C911CE86}\Instance\{765035B3-5944-4A94-806B-20EE3415F26F}\FriendlyName = "RealMedia Source"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{238D0F23-5DC9-45A6-9BE2-666160C324DD}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{238D0F23-5DC9-45A6-9BE2-666160C324DD}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\Codecs\\RealMediaSplitter.dll"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{941A4793-A705-4312-8DFC-C11CA05F397E}\ = "RealAudio Decoder"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{083863F1-70DE-11D0-BD40-00A0C911CE86}\Instance\{238D0F23-5DC9-45A6-9BE2-666160C324DD}\FriendlyName = "RealVideo Decoder"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{E21BE468-5C18-43EB-B0CC-DB93A847D769}\ = "RealMedia Splitter"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{238D0F23-5DC9-45A6-9BE2-666160C324DD}\InprocServer32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{083863F1-70DE-11D0-BD40-00A0C911CE86}\Instance\{E21BE468-5C18-43EB-B0CC-DB93A847D769}\FriendlyName = "RealMedia Splitter"	regsvr32.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{083863F1-70DE-11D0-BD40-00A0C911CE86}\Instance\{765035B3-5944-4A94-806B-20EE3415F26F}\FilterData = 02000000000060000000000000000000	regsvr32.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{083863F1-70DE-11D0-BD40-00A0C911CE86}\Instance\{941A4793-A705-4312-8DFC-C11CA05F397E}\FilterData = 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	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{765035B3-5944-4A94-806B-20EE3415F26F}\InprocServer32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{765035B3-5944-4A94-806B-20EE3415F26F}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\Codecs\\RealMediaSplitter.dll"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{765035B3-5944-4A94-806B-20EE3415F26F}\InprocServer32\ThreadingModel = "Both"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{238D0F23-5DC9-45A6-9BE2-666160C324DD}\InprocServer32\ThreadingModel = "Both"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{083863F1-70DE-11D0-BD40-00A0C911CE86}\Instance\{941A4793-A705-4312-8DFC-C11CA05F397E}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{083863F1-70DE-11D0-BD40-00A0C911CE86}\Instance\{941A4793-A705-4312-8DFC-C11CA05F397E}\FriendlyName = "RealAudio Decoder"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{E21BE468-5C18-43EB-B0CC-DB93A847D769}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{941A4793-A705-4312-8DFC-C11CA05F397E}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\Codecs\\RealMediaSplitter.dll"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{941A4793-A705-4312-8DFC-C11CA05F397E}\InprocServer32\ThreadingModel = "Both"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{083863F1-70DE-11D0-BD40-00A0C911CE86}\Instance\{E21BE468-5C18-43EB-B0CC-DB93A847D769}\CLSID = "{E21BE468-5C18-43EB-B0CC-DB93A847D769}"	regsvr32.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{083863F1-70DE-11D0-BD40-00A0C911CE86}\Instance\{238D0F23-5DC9-45A6-9BE2-666160C324DD}\FilterData = 02000000000060000200000000000000307069330000000000000000040000000000000000000000307479330000000090000000a0000000317479330000000090000000b0000000327479330000000090000000c0000000337479330000000090000000d0000000317069330800000000000000010000000000000000000000307479330000000090000000e00000007669647300001000800000aa00389b715256323000001000800000aa00389b715256333000001000800000aa00389b715256343000001000800000aa00389b715256343100001000800000aa00389b7100000000000000000000000000000000	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{083863F1-70DE-11D0-BD40-00A0C911CE86}\Instance\{941A4793-A705-4312-8DFC-C11CA05F397E}\CLSID = "{941A4793-A705-4312-8DFC-C11CA05F397E}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{941A4793-A705-4312-8DFC-C11CA05F397E}\InprocServer32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{083863F1-70DE-11D0-BD40-00A0C911CE86}\Instance\{765035B3-5944-4A94-806B-20EE3415F26F}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{083863F1-70DE-11D0-BD40-00A0C911CE86}\Instance\{765035B3-5944-4A94-806B-20EE3415F26F}\CLSID = "{765035B3-5944-4A94-806B-20EE3415F26F}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{E21BE468-5C18-43EB-B0CC-DB93A847D769}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\Codecs\\RealMediaSplitter.dll"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{941A4793-A705-4312-8DFC-C11CA05F397E}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{083863F1-70DE-11D0-BD40-00A0C911CE86}\Instance\{E21BE468-5C18-43EB-B0CC-DB93A847D769}	regsvr32.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{083863F1-70DE-11D0-BD40-00A0C911CE86}\Instance\{E21BE468-5C18-43EB-B0CC-DB93A847D769}\FilterData = 020000000000600002000000000000003070693300000000000000000100000000000000000000003074793300000000500000006000000031706933080000000000000000000000000000000000000083eb36e44f52ce119f530020af0ba77000000000000000000000000000000000	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{083863F1-70DE-11D0-BD40-00A0C911CE86}\Instance\{238D0F23-5DC9-45A6-9BE2-666160C324DD}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{083863F1-70DE-11D0-BD40-00A0C911CE86}\Instance\{238D0F23-5DC9-45A6-9BE2-666160C324DD}\CLSID = "{238D0F23-5DC9-45A6-9BE2-666160C324DD}"	regsvr32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2960 wrote to memory of 3356	2960	regsvr32.exe	87
PID 2960 wrote to memory of 3356	2960	regsvr32.exe	87
PID 2960 wrote to memory of 3356	2960	regsvr32.exe	87

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\Codecs\RealMediaSplitter.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:2960
- C:\Windows\SysWOW64\regsvr32.exe
  /s C:\Users\Admin\AppData\Local\Temp\Codecs\RealMediaSplitter.dll
  2⤵
  - System Location Discovery: System Language Discovery
  - Modifies registry class
  PID:3356

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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