Analysis
- max time kernel
14s - max time network
1416s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260911-en - resource tags
- submitted
01/10/2026, 08:59
General
- Target tdf21jqgzpnk73h6.vbs
- Size 1.1MB
- Sample261001-kxtybas1hv
- SHA256 f111218977e958180001e276f7b929408436132ad4d44bdf31f936bbb8c89f1b
Malware Config
Signatures
- Boot or Logon Autostart Execution: Active Setup 2 TTPs 1 IoCs
Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.
- Executes dropped EXE 1 IoCs
- Enumerates connected drives 3 TTPs 2 IoCs
Attempts to read the root path of hard drives other than the default C: drive.
- Looks up external IP address via web service 1 TTPs 4 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
- Executes a VBScript file via the Windows Script Host. 1 TTPs 1 IoCs
- Costura .NET executable packer 1 IoCs
Costura packer aka Costura Fody, is an add-in for the .NET framework that embeds all external dependency .dll files as resources inside main executable.
- Drops file in Windows directory 2 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Executes a command shell one-liner 1 TTPs 2 IoCs
Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.
- Reads the TCP/IP host and domain name from the registry 1 TTPs 2 IoCs
The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.
- Checks SCSI registry key(s) 3 TTPs 42 IoCs
SCSI information is often read in order to detect sandboxing environments.
- Modifies Internet Explorer settings 1 TTPs 1 IoCs
- Modifies registry class 16 IoCs
- Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Suspicious behavior: EnumeratesProcesses 10 IoCs
- Suspicious use of AdjustPrivilegeToken 19 IoCs
- Suspicious use of FindShellTrayWindow 6 IoCs
- Suspicious use of SendNotifyMessage 2 IoCs
- Suspicious use of SetWindowsHookEx 2 IoCs
- Suspicious use of WriteProcessMemory 2 IoCs
- Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
Processes
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C:\Windows\System32\WScript.exe"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\tdf21jqgzpnk73h6.vbs"1⤵
- Executes a VBScript file via the Windows Script Host.
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\tdf21jqgzpnk73h6.exe"C:\Users\Admin\AppData\Local\Temp\tdf21jqgzpnk73h6.exe"2⤵
- Executes dropped EXE
- Drops file in Windows directory
- Reads the TCP/IP host and domain name from the registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\explorer.exe"C:\Windows\explorer.exe"3⤵
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C:\Windows\SYSTEM32\CMD.exe"CMD" 471|EInD3KmWfww/LSHBTxXl0Bq+kujMKNz8MNQvOXwea6NVsJOspBU1HhMNGhe4HQtVWindowsControl472|zoSLxKUfxsng7VdFvchWRHH/baMSPAYiOHeW5tnrZVg=C:\Program Files\junkSearch.exe" enable=yes & exit3⤵
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C:\Windows\SYSTEM32\cmd.exe"cmd" /c schtasks /create /f /sc minute /mo 1 /tn "ShellHost" /tr "C:\Program Files\junkSearch.exe" /RL HIGHEST & exit3⤵
- Executes a command shell one-liner
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C:\Windows\system32\schtasks.exeschtasks /create /f /sc minute /mo 1 /tn "ShellHost" /tr "C:\Program Files\junkSearch.exe" /RL HIGHEST4⤵
- Scheduled Task/Job: Scheduled Task
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C:\Windows\SYSTEM32\cmd.exe"cmd" /c schtasks /create /f /sc minute /mo 30 /tn "CookieManager" /tr "C:\Windows\junkSearcher.exe" /RL HIGHEST & exit3⤵
- Executes a command shell one-liner
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C:\Windows\system32\schtasks.exeschtasks /create /f /sc minute /mo 30 /tn "CookieManager" /tr "C:\Windows\junkSearcher.exe" /RL HIGHEST4⤵
- Scheduled Task/Job: Scheduled Task
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C:\Program Files\junkSearch.exe"C:\Program Files\junkSearch.exe"3⤵
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C:\Windows\explorer.exe"C:\Windows\explorer.exe"4⤵
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C:\Windows\system32\mmc.exe"C:\Windows\system32\mmc.exe" "C:\Windows\system32\taskschd.msc"4⤵
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C:\Windows\system32\SecurityHealthSystray.exe"C:\Windows\system32\SecurityHealthSystray.exe"4⤵
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C:\Windows\system32\userinit.exeC:\Windows\system32\userinit.exe1⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\Explorer.EXEC:\Windows\Explorer.EXE2⤵
- Boot or Logon Autostart Execution: Active Setup
- Enumerates connected drives
- Checks SCSI registry key(s)
- Modifies Internet Explorer settings
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
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C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe"C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe" -ServerName:App.AppXywbrabmsek0gm3tkwpr5kwzbs55tkqay.mca1⤵
- Modifies registry class
- Suspicious use of SetWindowsHookEx
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C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\SearchHost.exe"C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\SearchHost.exe" -ServerName:CortanaUI.AppXstmwaab17q5s3y22tp6apqz7a45vwv65.mca1⤵
- Modifies registry class
- Suspicious use of SetWindowsHookEx
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C:\Windows\System32\userinit.exeC:\Windows\System32\userinit.exe1⤵
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C:\Windows\Explorer.EXEC:\Windows\Explorer.EXE2⤵
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C:\Program Files\junkSearch.exe"C:\Program Files\junkSearch.exe"1⤵
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C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe"C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe" -ServerName:App.AppXywbrabmsek0gm3tkwpr5kwzbs55tkqay.mca1⤵
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C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\SearchHost.exe"C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\SearchHost.exe" -ServerName:CortanaUI.AppXstmwaab17q5s3y22tp6apqz7a45vwv65.mca1⤵
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C:\Windows\system32\AUDIODG.EXEC:\Windows\system32\AUDIODG.EXE 0x00000000000004F8 0x00000000000005001⤵
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k GPSvcGroup1⤵
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C:\Windows\system32\sihost.exesihost.exe1⤵
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C:\Windows\explorer.exeexplorer.exe /LOADSAVEDWINDOWS2⤵
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C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\SearchHost.exe"C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\SearchHost.exe" -ServerName:CortanaUI.AppXstmwaab17q5s3y22tp6apqz7a45vwv65.mca1⤵
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C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe"C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe" -ServerName:App.AppXywbrabmsek0gm3tkwpr5kwzbs55tkqay.mca1⤵
Network
MITRE ATT&CK Enterprise v16
Execution
Command and Scripting Interpreter
2Visual Basic
1Windows Command Shell
1Scheduled Task/Job
1Scheduled Task
1Persistence
Boot or Logon Autostart Execution
1Active Setup
1Scheduled Task/Job
1Scheduled Task
1Privilege Escalation
Boot or Logon Autostart Execution
1Active Setup
1Scheduled Task/Job
1Scheduled Task
1Replay Monitor
Loading Replay Monitor...
Downloads
IconCache.db
DiscoverCacheData.dat
start2.bin
prep_Activatable Class_Hermes_perf.cache
prep_Activatable Class_Hermes_perf.cache
prep_Activatable Class_Hermes_perf.cache
prep_Activatable Class_Hermes_perf.cache
prep_Activatable Class_Hermes_perf.cache
prep_Activatable Class_Hermes_perf.cache
prep_Activatable Class_Hermes_perf.cache
prep_Activatable Class_Hermes_perf.cache
microsoftwindows.client[1].xml
tdf21jqgzpnk73h6.exe
5a2098e080cf7ac4.automaticDestinations-ms
junk.dll
memory/960-310-0x0000014820070000-0x0000014820071000-memory.dmp
memory/960-309-0x0000014820070000-0x0000014820071000-memory.dmp
memory/960-548-0x00007FFDC07D0000-0x00007FFDC07E6000-memory.dmp
memory/960-313-0x0000014820090000-0x0000014820091000-memory.dmp
memory/960-312-0x0000014820080000-0x0000014820081000-memory.dmp
memory/960-306-0x0000014820050000-0x0000014820051000-memory.dmp
memory/960-314-0x0000014820090000-0x0000014820091000-memory.dmp
memory/960-316-0x00000148200A0000-0x00000148200A1000-memory.dmp
memory/960-305-0x0000014820050000-0x0000014820051000-memory.dmp
memory/960-307-0x0000014820060000-0x0000014820061000-memory.dmp
memory/960-308-0x0000014820060000-0x0000014820061000-memory.dmp
memory/960-537-0x00007FFDC07D0000-0x00007FFDC07E6000-memory.dmp
memory/960-317-0x00000148200A0000-0x00000148200A1000-memory.dmp
memory/960-311-0x0000014820080000-0x0000014820081000-memory.dmp
memory/1308-642-0x00007FFDC07D0000-0x00007FFDC07E6000-memory.dmp
memory/1308-632-0x00007FFDC07D0000-0x00007FFDC07E6000-memory.dmp
memory/1460-764-0x00007FFDC07D0000-0x00007FFDC07E6000-memory.dmp
memory/1500-95-0x000001CA94110000-0x000001CA94130000-memory.dmp
memory/1500-71-0x000001CA83C90000-0x000001CA83CB0000-memory.dmp
memory/1500-65-0x000001CA93D80000-0x000001CA93E80000-memory.dmp
memory/1500-64-0x000001CA83850000-0x000001CA83870000-memory.dmp
memory/1500-51-0x000001CA80100000-0x000001CA80200000-memory.dmp
memory/2368-562-0x0000021A82BC0000-0x0000021A830FE000-memory.dmp
memory/2368-549-0x0000021A802B0000-0x0000021A802FC000-memory.dmp
memory/2368-544-0x0000021A80220000-0x0000021A80298000-memory.dmp
memory/2368-551-0x0000021A806A0000-0x0000021A806EA000-memory.dmp
memory/2368-608-0x0000021A80970000-0x0000021A8098E000-memory.dmp
memory/2368-550-0x0000021A80670000-0x0000021A8069A000-memory.dmp
memory/2400-766-0x00007FFDC07D0000-0x00007FFDC07E6000-memory.dmp
memory/2484-512-0x00007FFDC07D0000-0x00007FFDC07E6000-memory.dmp
memory/2836-239-0x000000000F0F0000-0x000000000F16C000-memory.dmp
memory/2836-238-0x000000000ECD0000-0x000000000ED13000-memory.dmp
memory/3048-355-0x00000255001E0000-0x00000255002E0000-memory.dmp
memory/3048-381-0x0000025503E10000-0x0000025503F10000-memory.dmp
memory/3048-409-0x00000255142F0000-0x0000025514310000-memory.dmp
memory/3048-395-0x0000025503A10000-0x0000025503A30000-memory.dmp
memory/3048-379-0x0000025503A30000-0x0000025503A50000-memory.dmp
memory/3348-42-0x00007FFDAAEE0000-0x00007FFDAB884000-memory.dmp
memory/3348-45-0x00007FFDAAEE0000-0x00007FFDAB884000-memory.dmp
memory/3348-38-0x00007FFDAAEE0000-0x00007FFDAB884000-memory.dmp
memory/3348-39-0x00007FFDAAEE0000-0x00007FFDAB884000-memory.dmp
memory/3348-40-0x00007FFDAAEE0000-0x00007FFDAB884000-memory.dmp
memory/3348-41-0x00007FFDAAEE0000-0x00007FFDAB884000-memory.dmp
memory/3348-15-0x00007FFDAAEE0000-0x00007FFDAB884000-memory.dmp
memory/3348-36-0x00007FFDAAEE0000-0x00007FFDAB884000-memory.dmp
memory/3348-44-0x00007FFDAAEE0000-0x00007FFDAB884000-memory.dmp
memory/3348-21-0x00007FFDAAEE0000-0x00007FFDAB884000-memory.dmp
memory/3348-8-0x00007FFDAB06F000-0x00007FFDAB070000-memory.dmp
memory/3348-20-0x00007FFDAAEE0000-0x00007FFDAB884000-memory.dmp
memory/3348-9-0x00000245136A0000-0x0000024513778000-memory.dmp
memory/3348-10-0x00007FFDAAEE0000-0x00007FFDAB884000-memory.dmp
memory/3348-296-0x00007FFDAAEE0000-0x00007FFDAB884000-memory.dmp
memory/3348-37-0x00007FFDAAEE0000-0x00007FFDAB884000-memory.dmp
memory/3348-18-0x00007FFDAAEE0000-0x00007FFDAB884000-memory.dmp
memory/3348-43-0x00007FFDAAEE0000-0x00007FFDAB884000-memory.dmp
memory/3348-46-0x00007FFDAAEE0000-0x00007FFDAB884000-memory.dmp
memory/3348-48-0x00007FFDAAEE0000-0x00007FFDAB884000-memory.dmp
memory/3348-19-0x00007FFDAAEE0000-0x00007FFDAB884000-memory.dmp
memory/3348-11-0x00007FFDAAEE0000-0x00007FFDAB884000-memory.dmp
memory/3348-229-0x000002452E210000-0x000002452E28C000-memory.dmp
memory/3348-17-0x00007FFDAAEE0000-0x00007FFDAB884000-memory.dmp
memory/3348-16-0x00007FFDAAEE0000-0x00007FFDAB884000-memory.dmp
memory/3348-12-0x00007FFDAAEE0000-0x00007FFDAB884000-memory.dmp
memory/3348-295-0x000002452E210000-0x000002452E28C000-memory.dmp
memory/3348-13-0x00007FFDAAEE0000-0x00007FFDAB884000-memory.dmp
memory/3348-14-0x00007FFDAAEE0000-0x00007FFDAB884000-memory.dmp
memory/4184-543-0x00007FFDC07D0000-0x00007FFDC07E6000-memory.dmp
memory/4184-538-0x00007FFDC07D0000-0x00007FFDC07E6000-memory.dmp
memory/5072-821-0x0000023A84BD0000-0x0000023A84CD0000-memory.dmp
memory/5072-820-0x0000023A848F0000-0x0000023A84910000-memory.dmp
memory/5072-836-0x0000023A95010000-0x0000023A95030000-memory.dmp
memory/5072-822-0x0000023A84910000-0x0000023A84930000-memory.dmp
memory/5180-659-0x00007FFDC07D0000-0x00007FFDC07E6000-memory.dmp
memory/5616-688-0x00007FFDC07D0000-0x00007FFDC07E6000-memory.dmp
memory/5960-787-0x00000165A58D0000-0x00000165A5D04000-memory.dmp
memory/6012-580-0x00007FFDC07D0000-0x00007FFDC07E6000-memory.dmp
memory/6084-698-0x000000000F0D0000-0x000000000F19C000-memory.dmp
memory/6084-745-0x000000000F0D0000-0x000000000F19C000-memory.dmp
memory/6084-540-0x000000000F0D0000-0x000000000F19C000-memory.dmp
memory/6084-539-0x00007FFDC07D0000-0x00007FFDC07E6000-memory.dmp
memory/6084-741-0x0000000004870000-0x0000000004871000-memory.dmp