f41ad7d84dff054319cca61c55542c294e639cd6d5b741c27cc65b9a3081d944

Analysis

max time kernel
94s
max time network
126s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
22/08/2024, 11:28

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

$SYSDIR/CoreAAC.dll
Size

592KB
MD5

6636fd123e77073c1a07d1ec0831334c
SHA1

39ea6f28d5b30675760f29df68160a81d5df349e
SHA256

e85c1802ae3c7af9b7967ceadaf0504823f092abba04ba912576edbfd421e76a
SHA512

3ac59d1ad36eb1c052c272a11c6dd78dbebb5061b8b79a2a1f0108f8208be7fb9cc8e6208124b12c779e2bdc845882cfd432a84427e2c5c312c4d3275b054849
SSDEEP

12288:8rXUXLyZqsQoK2AyPaGJuVpk+v9LybKslc9OyGs2+eD:SUX4K2kGJMpkwLyllA7l2

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 19 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{6AC7C19E-8CA0-4E3D-9A9F-2881DE29E0AC}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{6AC7C19E-8CA0-4E3D-9A9F-2881DE29E0AC}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\$SYSDIR\\CoreAAC.dll"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{BBFC1A2A-D3A2-4610-847D-26592022F86E}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\$SYSDIR\\CoreAAC.dll"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{4665E44B-8B9A-4515-A086-E94ECE374608}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{4665E44B-8B9A-4515-A086-E94ECE374608}\InprocServer32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{4665E44B-8B9A-4515-A086-E94ECE374608}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\$SYSDIR\\CoreAAC.dll"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{6AC7C19E-8CA0-4E3D-9A9F-2881DE29E0AC}\InprocServer32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{4665E44B-8B9A-4515-A086-E94ECE374608}\ = "CoreAAC Audio Decoder About"	regsvr32.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{083863F1-70DE-11D0-BD40-00A0C911CE86}\Instance\{6AC7C19E-8CA0-4E3D-9A9F-2881DE29E0AC}\FilterData = 020000000000800002000000000000003070693300000000000000000200000000000000000000003074793300000000700000008000000031747933000000007000000090000000317069330800000000000000010000000000000000000000307479330000000070000000a00000006175647300001000800000aa00389b71ff00000000001000800000aa00389b714d50344100001000800000aa00389b710100000000001000800000aa00389b71	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{6AC7C19E-8CA0-4E3D-9A9F-2881DE29E0AC}\InprocServer32\ThreadingModel = "Both"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{BBFC1A2A-D3A2-4610-847D-26592022F86E}\ = "CoreAAC Audio Decoder Info"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{4665E44B-8B9A-4515-A086-E94ECE374608}\InprocServer32\ThreadingModel = "Both"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{083863F1-70DE-11D0-BD40-00A0C911CE86}\Instance\{6AC7C19E-8CA0-4E3D-9A9F-2881DE29E0AC}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{6AC7C19E-8CA0-4E3D-9A9F-2881DE29E0AC}\ = "CoreAAC Audio Decoder"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{BBFC1A2A-D3A2-4610-847D-26592022F86E}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{BBFC1A2A-D3A2-4610-847D-26592022F86E}\InprocServer32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{BBFC1A2A-D3A2-4610-847D-26592022F86E}\InprocServer32\ThreadingModel = "Both"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{083863F1-70DE-11D0-BD40-00A0C911CE86}\Instance\{6AC7C19E-8CA0-4E3D-9A9F-2881DE29E0AC}\FriendlyName = "CoreAAC Audio Decoder"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{083863F1-70DE-11D0-BD40-00A0C911CE86}\Instance\{6AC7C19E-8CA0-4E3D-9A9F-2881DE29E0AC}\CLSID = "{6AC7C19E-8CA0-4E3D-9A9F-2881DE29E0AC}"	regsvr32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3004 wrote to memory of 4152	3004	regsvr32.exe	84
PID 3004 wrote to memory of 4152	3004	regsvr32.exe	84
PID 3004 wrote to memory of 4152	3004	regsvr32.exe	84

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\$SYSDIR\CoreAAC.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:3004
- C:\Windows\SysWOW64\regsvr32.exe
  /s C:\Users\Admin\AppData\Local\Temp\$SYSDIR\CoreAAC.dll
  2⤵
  - System Location Discovery: System Language Discovery
  - Modifies registry class
  PID:4152

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

Replay Monitor

Loading Replay Monitor...

Downloads