Analysis
- max time kernel
91s - max time network
151s - platform
windows10-2004_x64 - resource
win10v2004-20231215-en - resource tags
arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system - submitted
03/02/2024, 22:34
Static task
static1
1 signatures
Behavioral task
behavioral1
Sample
8d864e00ee27737c874569ecd6e5e534.dll
Resource
win7-20231215-en
windows7-x64
3 signatures
150 seconds
General
- Target 8d864e00ee27737c874569ecd6e5e534.dll
- Size 135KB
- Sample240203-2g2rnadhfp
- SHA256 20af0132374703f16c9069bdee02f789cc7d5d4fdedb35e56f7f41f14793868c
- MD5 8d864e00ee27737c874569ecd6e5e534
- SHA1 f161757cb62a46655865b1e7540933a7105c96dc
- SHA512 e429b950b82cfa5b2723a04d3e370a68bf6a763e8adc36accaac8c09e6f5d247802c4914997e65c8fe71ea0e4f97d81f737405610f393110a3e7f285243caaea
- SSDEEP 3072:IOjHy71ABH2wFBTmrrs3xaMFIOAtsj0yz92:DjHy71ABH2wFBTmrQ3xaMSOAmD92
- MD5 SHA1 SHA512 SSDEEP
Malware Config
Signatures
- Installs/modifies Browser Helper Object 2 TTPs 2 IoCs
BHOs are DLL modules which act as plugins for Internet Explorer.
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{F7C9E237-D0B2-4265-B4EC-B93F739D5471}\ regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{F7C9E237-D0B2-4265-B4EC-B93F739D5471} regsvr32.exe - Modifies registry class 47 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{C868EFBA-572E-4858-BE0C-9B1639D93F21}\1.0 regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{EBFA4A89-7372-40E9-9A27-D9C680570477} regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{EBFA4A89-7372-40E9-9A27-D9C680570477}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\BHO.FffPlayer.1\CLSID\ = "{F7C9E237-D0B2-4265-B4EC-B93F739D5471}" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\BHO.FffPlayer\CurVer\ = "BHO.FffPlayer.1" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{F7C9E237-D0B2-4265-B4EC-B93F739D5471}\InprocServer32 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{F7C9E237-D0B2-4265-B4EC-B93F739D5471}\AppID regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{F7C9E237-D0B2-4265-B4EC-B93F739D5471}\TypeLib regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{C868EFBA-572E-4858-BE0C-9B1639D93F21}\1.0\0 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{EBFA4A89-7372-40E9-9A27-D9C680570477}\ = "IFffPlayer" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{EBFA4A89-7372-40E9-9A27-D9C680570477}\ = "IFffPlayer" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\BHO.FffPlayer.1\CLSID regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\BHO.FffPlayer\CurVer regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{F7C9E237-D0B2-4265-B4EC-B93F739D5471}\InprocServer32\ThreadingModel = "apartment" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{EBFA4A89-7372-40E9-9A27-D9C680570477}\TypeLib regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{F7C9E237-D0B2-4265-B4EC-B93F739D5471}\TypeLib\ = "{C868EFBA-572E-4858-BE0C-9B1639D93F21}" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{C868EFBA-572E-4858-BE0C-9B1639D93F21}\1.0\FLAGS regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{C868EFBA-572E-4858-BE0C-9B1639D93F21}\1.0\HELPDIR regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{EBFA4A89-7372-40E9-9A27-D9C680570477}\ProxyStubClsid32 regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{EBFA4A89-7372-40E9-9A27-D9C680570477}\TypeLib regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\BHO.FffPlayer\CLSID regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{F7C9E237-D0B2-4265-B4EC-B93F739D5471} regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{F7C9E237-D0B2-4265-B4EC-B93F739D5471}\ProgID regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{EBFA4A89-7372-40E9-9A27-D9C680570477}\TypeLib\Version = "1.0" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{EBFA4A89-7372-40E9-9A27-D9C680570477}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{C868EFBA-572E-4858-BE0C-9B1639D93F21} regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{C868EFBA-572E-4858-BE0C-9B1639D93F21}\1.0\ = "BHO 1.0 Type Library" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{EBFA4A89-7372-40E9-9A27-D9C680570477}\ProxyStubClsid32 regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\BHO.FffPlayer regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\BHO.FffPlayer\ = "CFffPlayer Object" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{F7C9E237-D0B2-4265-B4EC-B93F739D5471}\ProgID\ = "BHO.FffPlayer.1" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{F7C9E237-D0B2-4265-B4EC-B93F739D5471}\VersionIndependentProgID\ = "BHO.FffPlayer" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{C868EFBA-572E-4858-BE0C-9B1639D93F21}\1.0\0\win32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\8d864e00ee27737c874569ecd6e5e534.dll" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{C868EFBA-572E-4858-BE0C-9B1639D93F21}\1.0\HELPDIR\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{EBFA4A89-7372-40E9-9A27-D9C680570477}\TypeLib\ = "{C868EFBA-572E-4858-BE0C-9B1639D93F21}" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{EBFA4A89-7372-40E9-9A27-D9C680570477} regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{EBFA4A89-7372-40E9-9A27-D9C680570477}\TypeLib\ = "{C868EFBA-572E-4858-BE0C-9B1639D93F21}" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\BHO.FffPlayer.1 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{F7C9E237-D0B2-4265-B4EC-B93F739D5471}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\8d864e00ee27737c874569ecd6e5e534.dll" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{C868EFBA-572E-4858-BE0C-9B1639D93F21}\1.0\FLAGS\ = "0" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{F7C9E237-D0B2-4265-B4EC-B93F739D5471}\Programmable regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{C868EFBA-572E-4858-BE0C-9B1639D93F21}\1.0\0\win32 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\BHO.FffPlayer.1\ = "CFffPlayer Object" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{F7C9E237-D0B2-4265-B4EC-B93F739D5471}\ = "CFffPlayer Object" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{F7C9E237-D0B2-4265-B4EC-B93F739D5471}\VersionIndependentProgID regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\BHO.FffPlayer\CLSID\ = "{F7C9E237-D0B2-4265-B4EC-B93F739D5471}" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{EBFA4A89-7372-40E9-9A27-D9C680570477}\TypeLib\Version = "1.0" regsvr32.exe - Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 756 wrote to memory of 2036 756 regsvr32.exe 84 PID 756 wrote to memory of 2036 756 regsvr32.exe 84 PID 756 wrote to memory of 2036 756 regsvr32.exe 84
Processes
-
C:\Windows\system32\regsvr32.exeregsvr32 /s C:\Users\Admin\AppData\Local\Temp\8d864e00ee27737c874569ecd6e5e534.dll1⤵
- Suspicious use of WriteProcessMemory
PID:756 -
C:\Windows\SysWOW64\regsvr32.exe/s C:\Users\Admin\AppData\Local\Temp\8d864e00ee27737c874569ecd6e5e534.dll2⤵
- Installs/modifies Browser Helper Object
- Modifies registry class
PID:2036
-