4fbdde800542ed7446db9a2a87ee0da5a8479f547779aa138a4d3f5a17343677

Analysis

max time kernel
126s
max time network
143s
platform
windows10-2004_x64
resource
win10v2004-20250217-en
resource tags

arch:x64arch:x86image:win10v2004-20250217-enlocale:en-usos:windows10-2004-x64system
submitted
27/02/2025, 02:39

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General

Target

Codecs/FLVSplitter.dll
Size

376KB
MD5

0bfdc3410a7edfbc05414cce6f76958f
SHA1

e70ce8d63394c4e48a3f2d6ec467db3ce801f988
SHA256

4781757e283f44bb5d85bf8600e89a2483d0742b13a02b446005dcb02a72d9b3
SHA512

6df1bcee3b82b451f4098e05b9335824ffeb1239cbe67003b053473622d2360e7a5e03173dae8ff7aafdd4f959a39e73a68e291bff4f0d5824688e1b8b39b097
SSDEEP

6144:h9hcFIuTT6v9VyUgf10zCpN138+VRjWL09y0Ur6ebjZDkjYOE:hruIuTT6uUWnN2+V5Py0CjyYOE

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 25 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{0050004D-0043-0020-2D00-200046004C00}\InprocServer32\ThreadingModel = "Both"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{00000000-7CE4-1003-2052-001000000000}\Instance\{0050004D-0043-0020-2D00-200046004C00}\FriendlyName = "鋏䟧ா佺鲅䬙标\u0a65\ue7b3짬ᶎ䇵⒟喲ᛟ蟀ⳬင䶠က佀က丰က뢐က룀က곀ကⳘင俠က什က䷐က\u1ae0က⛐ကⳄင侀က习က倀က仠က俰က仐က䷠ကꭐကꮐကꯀက갠က검က䶐က䶀က"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{083863F1-70DE-11D0-BD40-00A0C911CE86}\Instance\{47E792CF-0BBE-4F7A-859C-194B0768650A}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Media Type\{E436EB83-524F-11CE-9F53-0020AF0BA770}\{F2FAC0F1-3852-4670-AAC0-9051D400AC54}\Source Filter = "{E436EBB5-524F-11CE-9F53-0020AF0BA770}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{47E792CF-0BBE-4F7A-859C-194B0768650A}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{47E792CF-0BBE-4F7A-859C-194B0768650A}\ = "MPC - FLV Splitter (Gabest)"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{0050004D-0043-0020-2D00-200046004C00}\ = "(null)"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{083863F1-70DE-11D0-BD40-00A0C911CE86}\Instance\{47E792CF-0BBE-4F7A-859C-194B0768650A}\CLSID = "{47E792CF-0BBE-4F7A-859C-194B0768650A}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{00000000-7CE4-1003-2052-001000000000}\Instance\{0050004D-0043-0020-2D00-200046004C00}\CLSID = "{0050004D-0043-0020-2D00-200046004C00}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Media Type\{E436EB83-524F-11CE-9F53-0020AF0BA770}\{F2FAC0F1-3852-4670-AAC0-9051D400AC54}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Media Type\{E436EB83-524F-11CE-9F53-0020AF0BA770}\{F2FAC0F1-3852-4670-AAC0-9051D400AC54}\0 = "0,4,,464C5601"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{00000000-7CE4-1003-2052-001000000000}\Instance\{0050004D-0043-0020-2D00-200046004C00}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{00000000-7CE4-1003-2052-001000000000}\Instance	regsvr32.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{00000000-7CE4-1003-2052-001000000000}\Instance\{0050004D-0043-0020-2D00-200046004C00}\FilterData = 02000000a05100100000000000000000	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{0050004D-0043-0020-2D00-200046004C00}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\Codecs\\FLVSplitter.dll"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{47E792CF-0BBE-4F7A-859C-194B0768650A}\InprocServer32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{47E792CF-0BBE-4F7A-859C-194B0768650A}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\Codecs\\FLVSplitter.dll"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{47E792CF-0BBE-4F7A-859C-194B0768650A}\InprocServer32\ThreadingModel = "Both"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{0050004D-0043-0020-2D00-200046004C00}\InprocServer32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{083863F1-70DE-11D0-BD40-00A0C911CE86}\Instance\{47E792CF-0BBE-4F7A-859C-194B0768650A}\FriendlyName = "MPC - FLV Splitter (Gabest)"	regsvr32.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{083863F1-70DE-11D0-BD40-00A0C911CE86}\Instance\{47E792CF-0BBE-4F7A-859C-194B0768650A}\FilterData = 02000000000060000200000000000000307069330000000000000000020000000000000000000000307479330000000060000000700000003174793300000000600000008000000031706933080000000000000000000000000000000000000083eb36e44f52ce119f530020af0ba770f1c0faf252387046aac09051d400ac5400000000000000000000000000000000	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{00000000-7CE4-1003-2052-001000000000}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{0050004D-0043-0020-2D00-200046004C00}	regsvr32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4672 wrote to memory of 4776	4672	regsvr32.exe	86
PID 4672 wrote to memory of 4776	4672	regsvr32.exe	86
PID 4672 wrote to memory of 4776	4672	regsvr32.exe	86

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\Codecs\FLVSplitter.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:4672
- C:\Windows\SysWOW64\regsvr32.exe
  /s C:\Users\Admin\AppData\Local\Temp\Codecs\FLVSplitter.dll
  2⤵
  - System Location Discovery: System Language Discovery
  - Modifies registry class
  PID:4776

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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