Overview
overview
10Static
static
10FSCapture-...wn.url
windows7-x64
6FSCapture-...wn.url
windows10-2004-x64
3FSCapture-...on.dll
windows7-x64
3FSCapture-...on.dll
windows10-2004-x64
3FSCapture-...01.dll
windows7-x64
3FSCapture-...01.dll
windows10-2004-x64
3FSCapture-...02.exe
windows7-x64
1FSCapture-...02.exe
windows10-2004-x64
1FSCapture-...03.exe
windows7-x64
3FSCapture-...03.exe
windows10-2004-x64
3FSCapture-...04.exe
windows7-x64
3FSCapture-...04.exe
windows10-2004-x64
3FSCapture-...05.dll
windows7-x64
3FSCapture-...05.dll
windows10-2004-x64
3FSCapture-...re.exe
windows7-x64
3FSCapture-...re.exe
windows10-2004-x64
3FSCapture-...ir.exe
windows7-x64
3FSCapture-...ir.exe
windows10-2004-x64
3FSCapture-...us.exe
windows7-x64
3FSCapture-...us.exe
windows10-2004-x64
3FSCapture-...er.exe
windows7-x64
3FSCapture-...er.exe
windows10-2004-x64
3FSCapture-...uv.dll
windows7-x64
3FSCapture-...uv.dll
windows10-2004-x64
3FSCapture-...bp.dll
windows7-x64
3FSCapture-...bp.dll
windows10-2004-x64
3FSCapture-...ng.bat
windows7-x64
10FSCapture-...ng.bat
windows10-2004-x64
10FSCapture-...se.exe
windows7-x64
10FSCapture-...se.exe
windows10-2004-x64
10FSCapture-...64.sys
windows7-x64
1FSCapture-...64.sys
windows10-2004-x64
1Analysis
-
max time kernel
12s -
max time network
19s -
platform
windows7_x64 -
resource
win7-20241010-en -
resource tags
arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system -
submitted
04/11/2024, 04:46
Behavioral task
behavioral1
Sample
FSCapture-10.5-CN/bin/423Down.url
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
FSCapture-10.5-CN/bin/423Down.url
Resource
win10v2004-20241007-en
Behavioral task
behavioral3
Sample
FSCapture-10.5-CN/bin/FSCIcon.dll
Resource
win7-20240708-en
Behavioral task
behavioral4
Sample
FSCapture-10.5-CN/bin/FSCIcon.dll
Resource
win10v2004-20241007-en
Behavioral task
behavioral5
Sample
FSCapture-10.5-CN/bin/FSCPlugin01.dll
Resource
win7-20240903-en
Behavioral task
behavioral6
Sample
FSCapture-10.5-CN/bin/FSCPlugin01.dll
Resource
win10v2004-20241007-en
Behavioral task
behavioral7
Sample
FSCapture-10.5-CN/bin/FSCPlugin02.exe
Resource
win7-20240903-en
Behavioral task
behavioral8
Sample
FSCapture-10.5-CN/bin/FSCPlugin02.exe
Resource
win10v2004-20241007-en
Behavioral task
behavioral9
Sample
FSCapture-10.5-CN/bin/FSCPlugin03.exe
Resource
win7-20240903-en
Behavioral task
behavioral10
Sample
FSCapture-10.5-CN/bin/FSCPlugin03.exe
Resource
win10v2004-20241007-en
Behavioral task
behavioral11
Sample
FSCapture-10.5-CN/bin/FSCPlugin04.exe
Resource
win7-20240903-en
Behavioral task
behavioral12
Sample
FSCapture-10.5-CN/bin/FSCPlugin04.exe
Resource
win10v2004-20241007-en
Behavioral task
behavioral13
Sample
FSCapture-10.5-CN/bin/FSCPlugin05.dll
Resource
win7-20241010-en
Behavioral task
behavioral14
Sample
FSCapture-10.5-CN/bin/FSCPlugin05.dll
Resource
win10v2004-20241007-en
Behavioral task
behavioral15
Sample
FSCapture-10.5-CN/bin/FSCapture.exe
Resource
win7-20240903-en
Behavioral task
behavioral16
Sample
FSCapture-10.5-CN/bin/FSCapture.exe
Resource
win10v2004-20241007-en
Behavioral task
behavioral17
Sample
FSCapture-10.5-CN/bin/FSCrossHair.exe
Resource
win7-20241010-en
Behavioral task
behavioral18
Sample
FSCapture-10.5-CN/bin/FSCrossHair.exe
Resource
win10v2004-20241007-en
Behavioral task
behavioral19
Sample
FSCapture-10.5-CN/bin/FSFocus.exe
Resource
win7-20240903-en
Behavioral task
behavioral20
Sample
FSCapture-10.5-CN/bin/FSFocus.exe
Resource
win10v2004-20241007-en
Behavioral task
behavioral21
Sample
FSCapture-10.5-CN/bin/FSRecorder.exe
Resource
win7-20240903-en
Behavioral task
behavioral22
Sample
FSCapture-10.5-CN/bin/FSRecorder.exe
Resource
win10v2004-20241007-en
Behavioral task
behavioral23
Sample
FSCapture-10.5-CN/bin/libsharpyuv.dll
Resource
win7-20241010-en
Behavioral task
behavioral24
Sample
FSCapture-10.5-CN/bin/libsharpyuv.dll
Resource
win10v2004-20241007-en
Behavioral task
behavioral25
Sample
FSCapture-10.5-CN/bin/libwebp.dll
Resource
win7-20241010-en
Behavioral task
behavioral26
Sample
FSCapture-10.5-CN/bin/libwebp.dll
Resource
win10v2004-20241007-en
Behavioral task
behavioral27
Sample
FSCapture-10.5-CN/bin/re/lib/CrashReporting.bat
Resource
win7-20240903-en
Behavioral task
behavioral28
Sample
FSCapture-10.5-CN/bin/re/lib/CrashReporting.bat
Resource
win10v2004-20241007-en
Behavioral task
behavioral29
Sample
FSCapture-10.5-CN/bin/re/lib/FSCapture_license.exe
Resource
win7-20240903-en
Behavioral task
behavioral30
Sample
FSCapture-10.5-CN/bin/re/lib/FSCapture_license.exe
Resource
win10v2004-20241007-en
Behavioral task
behavioral31
Sample
FSCapture-10.5-CN/bin/re/lib/WinRing0x64.sys
Resource
win7-20240903-en
Behavioral task
behavioral32
Sample
FSCapture-10.5-CN/bin/re/lib/WinRing0x64.sys
Resource
win10v2004-20241007-en
General
-
Target
FSCapture-10.5-CN/bin/FSCPlugin05.dll
-
Size
117KB
-
MD5
70c3f6892684641080c6ffe2f32b9bda
-
SHA1
cbb401c44a17e85e54e73b0c716cd5e819ff6421
-
SHA256
3d2877a8d739f682fb5323c00d568483f8c878c6ac745de5f0d0caa7ffa3788a
-
SHA512
d1341d4e190ea4109a15a99e4119b2559c0d330df43ab2ed6605f454e9f7012fd42fa75dde9a8290c366fbf50b4d44d36548e35568bc510b974fa4cfe47f7f30
-
SSDEEP
3072:yuJnXnJMBIrVDtuUFAWoULBRmBrv8qKxs:yYXfpxuUFZDBR8h
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.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language regsvr32.exe -
Modifies registry class 13 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{33D9A762-90C8-11D0-BD43-00A0C911CE86}\Instance\{7D24573C-DB27-3694-BEC3-4263D335A781} regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{33D9A762-90C8-11D0-BD43-00A0C911CE86} regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{33D9A762-90C8-11D0-BD43-00A0C911CE86}\Instance\{7D24573C-DB27-3694-BEC3-4263D335A781}\CLSID = "{7D24573C-DB27-3694-BEC3-4263D335A781}" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{7D24573C-DB27-3694-BEC3-4263D335A781}\ = "FastStoneVirtualAudio" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{7D24573C-DB27-3694-BEC3-4263D335A781}\InprocServer32\ThreadingModel = "Both" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{7D24573C-DB27-3694-BEC3-4263D335A781}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\FSCapture-10.5-CN\\bin\\FSCPlugin05.dll" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{33D9A762-90C8-11D0-BD43-00A0C911CE86}\Instance regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{33D9A762-90C8-11D0-BD43-00A0C911CE86}\Instance\{7D24573C-DB27-3694-BEC3-4263D335A781}\FriendlyName = "FastStoneVirtualAudio" regsvr32.exe Set value (data) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{33D9A762-90C8-11D0-BD43-00A0C911CE86}\Instance\{7D24573C-DB27-3694-BEC3-4263D335A781}\FilterData = 02000000000020000100000000000000307069330800000000000000010000000000000000000000307479330000000038000000480000006175647300001000800000aa00389b7100000000000000000000000000000000 regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{7D24573C-DB27-3694-BEC3-4263D335A781} regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{7D24573C-DB27-3694-BEC3-4263D335A781}\InprocServer32 regsvr32.exe -
Suspicious use of WriteProcessMemory 7 IoCs
description pid Process procid_target PID 1996 wrote to memory of 1856 1996 regsvr32.exe 29 PID 1996 wrote to memory of 1856 1996 regsvr32.exe 29 PID 1996 wrote to memory of 1856 1996 regsvr32.exe 29 PID 1996 wrote to memory of 1856 1996 regsvr32.exe 29 PID 1996 wrote to memory of 1856 1996 regsvr32.exe 29 PID 1996 wrote to memory of 1856 1996 regsvr32.exe 29 PID 1996 wrote to memory of 1856 1996 regsvr32.exe 29
Processes
-
C:\Windows\system32\regsvr32.exeregsvr32 /s C:\Users\Admin\AppData\Local\Temp\FSCapture-10.5-CN\bin\FSCPlugin05.dll1⤵
- Suspicious use of WriteProcessMemory
PID:1996 -
C:\Windows\SysWOW64\regsvr32.exe/s C:\Users\Admin\AppData\Local\Temp\FSCapture-10.5-CN\bin\FSCPlugin05.dll2⤵
- System Location Discovery: System Language Discovery
- Modifies registry class
PID:1856
-