Overview
overview
5Static
static
5FSViewerSetup81.exe
windows10-2004-x64
4FSViewerSetup81.exe
windows11-ltsc_2024-x64
4$PLUGINSDI...ns.dll
windows10-2004-x64
3$PLUGINSDI...ns.dll
windows11-ltsc_2024-x64
3$PLUGINSDI...em.dll
windows10-2004-x64
3$PLUGINSDI...em.dll
windows11-ltsc_2024-x64
3EmailZipEXE.exe
windows10-2004-x64
3EmailZipEXE.exe
windows11-ltsc_2024-x64
3FSIcons.dll
windows10-2004-x64
3FSIcons.dll
windows11-ltsc_2024-x64
3FSViewer.exe
windows10-2004-x64
3FSViewer.exe
windows11-ltsc_2024-x64
3FSViewerHelp.chm
windows10-2004-x64
1FSViewerHelp.chm
windows11-ltsc_2024-x64
1Languages/...10.chm
windows10-2004-x64
1Languages/...10.chm
windows11-ltsc_2024-x64
1Languages/...11.chm
windows10-2004-x64
1Languages/...11.chm
windows11-ltsc_2024-x64
1Languages/...13.chm
windows10-2004-x64
1Languages/...13.chm
windows11-ltsc_2024-x64
1Languages/...15.chm
windows10-2004-x64
1Languages/...15.chm
windows11-ltsc_2024-x64
1Languages/...17.chm
windows10-2004-x64
1Languages/...17.chm
windows11-ltsc_2024-x64
1Languages/...18.chm
windows10-2004-x64
1Languages/...18.chm
windows11-ltsc_2024-x64
1Languages/...21.chm
windows10-2004-x64
1Languages/...21.chm
windows11-ltsc_2024-x64
1Languages/..._4.chm
windows10-2004-x64
1Languages/..._4.chm
windows11-ltsc_2024-x64
1Languages/..._5.chm
windows10-2004-x64
1Languages/..._5.chm
windows11-ltsc_2024-x64
1Analysis
- max time kernel
148s - max time network
150s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows - submitted
15/08/2026, 00:23
Behavioral task
behavioral1
Sample
FSViewerSetup81.exe
Resource
win10v2004-20260513-en
Behavioral task
behavioral2
Sample
FSViewerSetup81.exe
Resource
win11ltsc2024-20260709-en
Behavioral task
behavioral3
Sample
$PLUGINSDIR/InstallOptions.dll
Resource
win10v2004-20260513-en
Behavioral task
behavioral4
Sample
$PLUGINSDIR/InstallOptions.dll
Resource
win11ltsc2024-20260709-en
Behavioral task
behavioral5
Sample
$PLUGINSDIR/System.dll
Resource
win10v2004-20260513-en
Behavioral task
behavioral6
Sample
$PLUGINSDIR/System.dll
Resource
win11ltsc2024-20260709-en
Behavioral task
behavioral7
Sample
EmailZipEXE.exe
Resource
win10v2004-20260513-en
Behavioral task
behavioral8
Sample
EmailZipEXE.exe
Resource
win11ltsc2024-20260709-en
Behavioral task
behavioral9
Sample
FSIcons.dll
Resource
win10v2004-20260513-en
Behavioral task
behavioral10
Sample
FSIcons.dll
Resource
win11ltsc2024-20260709-en
Behavioral task
behavioral11
Sample
FSViewer.exe
Resource
win10v2004-20260513-en
Behavioral task
behavioral12
Sample
FSViewer.exe
Resource
win11ltsc2024-20260709-en
Behavioral task
behavioral13
Sample
FSViewerHelp.chm
Resource
win10v2004-20260513-en
Behavioral task
behavioral14
Sample
FSViewerHelp.chm
Resource
win11ltsc2024-20260709-en
Behavioral task
behavioral15
Sample
Languages/FSViewerHelp_10.chm
Resource
win10v2004-20260513-en
Behavioral task
behavioral16
Sample
Languages/FSViewerHelp_10.chm
Resource
win11ltsc2024-20260710-en
Behavioral task
behavioral17
Sample
Languages/FSViewerHelp_11.chm
Resource
win10v2004-20260513-en
Behavioral task
behavioral18
Sample
Languages/FSViewerHelp_11.chm
Resource
win11ltsc2024-20260709-en
Behavioral task
behavioral19
Sample
Languages/FSViewerHelp_13.chm
Resource
win10v2004-20260513-en
Behavioral task
behavioral20
Sample
Languages/FSViewerHelp_13.chm
Resource
win11ltsc2024-20260709-en
Behavioral task
behavioral21
Sample
Languages/FSViewerHelp_15.chm
Resource
win10v2004-20260513-en
Behavioral task
behavioral22
Sample
Languages/FSViewerHelp_15.chm
Resource
win11ltsc2024-20260709-en
Behavioral task
behavioral23
Sample
Languages/FSViewerHelp_17.chm
Resource
win10v2004-20260513-en
Behavioral task
behavioral24
Sample
Languages/FSViewerHelp_17.chm
Resource
win11ltsc2024-20260709-en
Behavioral task
behavioral25
Sample
Languages/FSViewerHelp_18.chm
Resource
win10v2004-20260513-en
Behavioral task
behavioral26
Sample
Languages/FSViewerHelp_18.chm
Resource
win11ltsc2024-20260709-en
Behavioral task
behavioral27
Sample
Languages/FSViewerHelp_21.chm
Resource
win10v2004-20260513-en
Behavioral task
behavioral28
Sample
Languages/FSViewerHelp_21.chm
Resource
win11ltsc2024-20260709-en
Behavioral task
behavioral29
Sample
Languages/FSViewerHelp_4.chm
Resource
win10v2004-20260513-en
Behavioral task
behavioral30
Sample
Languages/FSViewerHelp_4.chm
Resource
win11ltsc2024-20260710-en
Behavioral task
behavioral31
Sample
Languages/FSViewerHelp_5.chm
Resource
win10v2004-20260513-en
Behavioral task
behavioral32
Sample
Languages/FSViewerHelp_5.chm
Resource
win11ltsc2024-20260709-en
General
- Target $PLUGINSDIR/InstallOptions.dll
- Size 15KB
- Sample260815-aprg4swtbx
- SHA256 c7fef6457989d97fecc0616a69947927da9d8c493f7905dc8475c748f044f3cf
- MD5 ece25721125d55aa26cdfe019c871476
- SHA1 b87685ae482553823bf95e73e790de48dc0c11ba
- SHA512 4e384735d03c943f5eb3396bb3a9cb42c9d8a5479fe2871de5b8bc18db4bbd6e2c5f8fd71b6840512a7249e12a1c63e0e760417e4baa3dc30f51375588410480
- SSDEEP 384:EXsC43tPegZ3eBaRwCPOYY7nNYXC06/Yosa:EXJTgZ3eBTCmrnNA5p
- TLSH T1E1624D1137C558B3E2D62A797EE3B7138FA5F722A4438E0BC7332E06281A5956E7C311
- MD5 SHA1 SHA512 SSDEEP TLSH
Malware Config
Signatures
- Program crash 1 IoCs
pid pid_target Process procid_target 6224 6836 WerFault.exe 89 - 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 1 IoCs
description pid Process procid_target PID 3268 wrote to memory of 6836 3268 rundll32.exe 89
Processes
-
C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\InstallOptions.dll,#11⤵
- Suspicious use of WriteProcessMemory
PID:3268 -
C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\InstallOptions.dll,#12⤵
- System Location Discovery: System Language Discovery
PID:6836 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 6836 -s 5963⤵
- Program crash
PID:6224
-
-
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 6836 -ip 68361⤵PID:3684