Overview
overview
3Static
static
3Microsoft....4.appx
windows10-1703-x64
Microsoft....4.appx
windows10-2004-x64
arm64/HEVC...RE.dll
windows10-1703-x64
1arm64/HEVC...RE.dll
windows10-2004-x64
1arm64/mfH265Enc.dll
windows10-1703-x64
1arm64/mfH265Enc.dll
windows10-2004-x64
1x64/HEVCDE...RE.dll
windows10-1703-x64
1x64/HEVCDE...RE.dll
windows10-2004-x64
1x64/mfH265Enc.dll
windows10-1703-x64
1x64/mfH265Enc.dll
windows10-2004-x64
1x86/HEVCDE...RE.dll
windows10-1703-x64
3x86/HEVCDE...RE.dll
windows10-2004-x64
3x86/mfH265Enc.dll
windows10-1703-x64
3x86/mfH265Enc.dll
windows10-2004-x64
3Microsoft....4.appx
windows10-1703-x64
Microsoft....4.appx
windows10-2004-x64
1x64/HEVCDE...RE.dll
windows10-1703-x64
1x64/HEVCDE...RE.dll
windows10-2004-x64
1x64/mfH265Enc.dll
windows10-1703-x64
1x64/mfH265Enc.dll
windows10-2004-x64
1x86/HEVCDE...RE.dll
windows10-1703-x64
3x86/HEVCDE...RE.dll
windows10-2004-x64
3x86/mfH265Enc.dll
windows10-1703-x64
3x86/mfH265Enc.dll
windows10-2004-x64
3Microsoft....6.appx
windows10-1703-x64
Microsoft....6.appx
windows10-2004-x64
1x86/HEVCDE...RE.dll
windows10-1703-x64
3x86/HEVCDE...RE.dll
windows10-2004-x64
3x86/mfH265Enc.dll
windows10-1703-x64
3x86/mfH265Enc.dll
windows10-2004-x64
3Analysis
-
max time kernel
139s -
max time network
154s -
platform
windows10-2004_x64 -
resource
win10v2004-20240910-en -
resource tags
arch:x64arch:x86image:win10v2004-20240910-enlocale:en-usos:windows10-2004-x64system -
submitted
19-09-2024 18:15
Static task
static1
Behavioral task
behavioral1
Sample
Microsoft.HEVCVideoExtensions_8wekyb3d8bbwe.arm64.appx
Resource
win10-20240404-en
Behavioral task
behavioral2
Sample
Microsoft.HEVCVideoExtensions_8wekyb3d8bbwe.arm64.appx
Resource
win10v2004-20240802-en
Behavioral task
behavioral3
Sample
arm64/HEVCDECODER_STORE.dll
Resource
win10-20240404-en
Behavioral task
behavioral4
Sample
arm64/HEVCDECODER_STORE.dll
Resource
win10v2004-20240802-en
Behavioral task
behavioral5
Sample
arm64/mfH265Enc.dll
Resource
win10-20240611-en
Behavioral task
behavioral6
Sample
arm64/mfH265Enc.dll
Resource
win10v2004-20240802-en
Behavioral task
behavioral7
Sample
x64/HEVCDECODER_STORE.dll
Resource
win10-20240404-en
Behavioral task
behavioral8
Sample
x64/HEVCDECODER_STORE.dll
Resource
win10v2004-20240802-en
Behavioral task
behavioral9
Sample
x64/mfH265Enc.dll
Resource
win10-20240404-en
Behavioral task
behavioral10
Sample
x64/mfH265Enc.dll
Resource
win10v2004-20240802-en
Behavioral task
behavioral11
Sample
x86/HEVCDECODER_STORE.dll
Resource
win10-20240404-en
Behavioral task
behavioral12
Sample
x86/HEVCDECODER_STORE.dll
Resource
win10v2004-20240802-en
Behavioral task
behavioral13
Sample
x86/mfH265Enc.dll
Resource
win10-20240404-en
Behavioral task
behavioral14
Sample
x86/mfH265Enc.dll
Resource
win10v2004-20240910-en
Behavioral task
behavioral15
Sample
Microsoft.HEVCVideoExtensions_8wekyb3d8bbwe.x64.appx
Resource
win10-20240404-en
Behavioral task
behavioral16
Sample
Microsoft.HEVCVideoExtensions_8wekyb3d8bbwe.x64.appx
Resource
win10v2004-20240802-en
Behavioral task
behavioral17
Sample
x64/HEVCDECODER_STORE.dll
Resource
win10-20240611-en
Behavioral task
behavioral18
Sample
x64/HEVCDECODER_STORE.dll
Resource
win10v2004-20240802-en
Behavioral task
behavioral19
Sample
x64/mfH265Enc.dll
Resource
win10-20240404-en
Behavioral task
behavioral20
Sample
x64/mfH265Enc.dll
Resource
win10v2004-20240802-en
Behavioral task
behavioral21
Sample
x86/HEVCDECODER_STORE.dll
Resource
win10-20240404-en
Behavioral task
behavioral22
Sample
x86/HEVCDECODER_STORE.dll
Resource
win10v2004-20240802-en
Behavioral task
behavioral23
Sample
x86/mfH265Enc.dll
Resource
win10-20240404-en
Behavioral task
behavioral24
Sample
x86/mfH265Enc.dll
Resource
win10v2004-20240802-en
Behavioral task
behavioral25
Sample
Microsoft.HEVCVideoExtensions_8wekyb3d8bbwe.x86.appx
Resource
win10-20240404-en
Behavioral task
behavioral26
Sample
Microsoft.HEVCVideoExtensions_8wekyb3d8bbwe.x86.appx
Resource
win10v2004-20240802-en
Behavioral task
behavioral27
Sample
x86/HEVCDECODER_STORE.dll
Resource
win10-20240404-en
Behavioral task
behavioral28
Sample
x86/HEVCDECODER_STORE.dll
Resource
win10v2004-20240802-en
Behavioral task
behavioral29
Sample
x86/mfH265Enc.dll
Resource
win10-20240404-en
Behavioral task
behavioral30
Sample
x86/mfH265Enc.dll
Resource
win10v2004-20240802-en
General
-
Target
x86/mfH265Enc.dll
-
Size
973KB
-
MD5
8a457e50559e29f8ba5188a65b6beae1
-
SHA1
3c496d4a1c7e4356475cf98b54765d862c48ba22
-
SHA256
56e68e9505602acfe9d4aec12edc6feaf373715573b272ceea9116ea22ed90f3
-
SHA512
dea1cea1dae7c7599bb38a2decb44ab3fa03d842d46ea1a902ff950ecd143a0dcd4e8689770537192ad0851fee611ed6346c3fe7f2c0985bd41eed183fbc6809
-
SSDEEP
24576:IA11gjX/QVpl7gG8geREGQihZ41GvQiAKhr0Iem+aJy4uEfW4gJtIV1boMss5Jnc:Ia1gjXa7gG8geREYAg76m+azu4WjJtIO
Malware Config
Signatures
-
Program crash 1 IoCs
pid pid_target Process procid_target 4460 2236 WerFault.exe 86 -
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.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language rundll32.exe -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 4004 wrote to memory of 2236 4004 rundll32.exe 86 PID 4004 wrote to memory of 2236 4004 rundll32.exe 86 PID 4004 wrote to memory of 2236 4004 rundll32.exe 86
Processes
-
C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\x86\mfH265Enc.dll,#11⤵
- Suspicious use of WriteProcessMemory
PID:4004 -
C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\x86\mfH265Enc.dll,#12⤵
- System Location Discovery: System Language Discovery
PID:2236 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 2236 -s 6003⤵
- Program crash
PID:4460
-
-
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 2236 -ip 22361⤵PID:2196