Analysis
- max time kernel
148s - max time network
146s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260629-en - resource tags
- submitted
01/07/2026, 19:56
General
- Target dripclientserver.exe
- Size 3.0MB
- Sample260701-ynswjsdy3k
- SHA256 d097f0f66980133bdaae0ae4d484c636d7b5f3873d41a887c153c680cc392603
Malware Config
Signatures
- Family: Defendnot
Defendnot is a tool designed to disable Microsoft Defender.
- Detects Defendnot 1 IoCs
- Command and Scripting Interpreter: PowerShell 1 TTPs 6 IoCs
Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.
- Executes dropped EXE 2 IoCs
- Drops file in System32 directory 3 IoCs
- Checks for VirtualBox DLLs, possible anti-VM trick 1 TTPs 1 IoCs
Certain files are specific to VirtualBox VMs and can be used to detect execution in a VM.
- Delays execution with timeout.exe 1 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 3 IoCs
- Suspicious use of AdjustPrivilegeToken 4 IoCs
- Suspicious use of WriteProcessMemory 3 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:\Users\Admin\AppData\Local\Temp\dripclientserver.exe"C:\Users\Admin\AppData\Local\Temp\dripclientserver.exe"1⤵
- Drops file in System32 directory
- Checks for VirtualBox DLLs, possible anti-VM trick
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"powershell.exe" -c Add-MpPreference -ExclusionPath C:\Users\Admin\AppData\Local\Temp\0rctwxht.50r2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\SYSTEM32\schtasks.exe"schtasks" /create /tn "systil cleaner" /sc ONLOGON /tr "C:\Windows\system32\systil\cleaner.exe" /rl HIGHEST /f2⤵
- Scheduled Task/Job: Scheduled Task
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C:\Windows\system32\systil\cleaner.exe"C:\Windows\system32\systil\cleaner.exe"2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"powershell.exe" -c Add-MpPreference -ExclusionPath C:\Users\Admin\AppData\Local\Temp\lzl3cbok.4qd3⤵
- Command and Scripting Interpreter: PowerShell
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C:\Windows\SYSTEM32\schtasks.exe"schtasks" /create /tn "systil cleaner" /sc ONLOGON /tr "C:\Windows\system32\systil\cleaner.exe" /rl HIGHEST /f3⤵
- Scheduled Task/Job: Scheduled Task
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C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"powershell.exe" -c Add-MpPreference -ExclusionPath C:\Users\Admin\AppData\Local\Temp\p4055dio.vge3⤵
- Command and Scripting Interpreter: PowerShell
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C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"powershell.exe" -c Add-MpPreference -ExclusionProcess defendnot-loader.exe3⤵
- Command and Scripting Interpreter: PowerShell
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C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"powershell.exe" -c Add-MpPreference -ExclusionProcess defendnot-loader.exe3⤵
- Command and Scripting Interpreter: PowerShell
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C:\Users\Admin\AppData\Local\Temp\lzl3cbok.4qd\defendnot-loader.exe"C:\Users\Admin\AppData\Local\Temp\lzl3cbok.4qd\defendnot-loader.exe" --silent --name "Windows Security"3⤵
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C:\Windows\SYSTEM32\Taskmgr.exeTaskmgr.exe4⤵
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C:\Users\Admin\AppData\Local\Temp\p4055dio.vge\defendnot-loader.exe"C:\Users\Admin\AppData\Local\Temp\p4055dio.vge\defendnot-loader.exe" --silent --name "Windows Security"3⤵
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C:\Windows\SYSTEM32\Taskmgr.exeTaskmgr.exe4⤵
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C:\Windows\SYSTEM32\schtasks.exe"schtasks" /delete /tn "systil cleaner" /f3⤵
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C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\FzAozZayLTGm.bat" "3⤵
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C:\Windows\system32\chcp.comchcp 650014⤵
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C:\Windows\system32\timeout.exetimeout /T 5 /NOBREAK4⤵
- Delays execution with timeout.exe
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C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"powershell.exe" -c Add-MpPreference -ExclusionProcess defendnot-loader.exe2⤵
- Command and Scripting Interpreter: PowerShell
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C:\Users\Admin\AppData\Local\Temp\0rctwxht.50r\defendnot-loader.exe"C:\Users\Admin\AppData\Local\Temp\0rctwxht.50r\defendnot-loader.exe" --silent --name "Windows Security"2⤵
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C:\Windows\SYSTEM32\Taskmgr.exeTaskmgr.exe3⤵
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C:\Windows\system32\systil\cleaner.exeC:\Windows\system32\systil\cleaner.exe1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
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C:\Users\Admin\AppData\Local\Temp\0rctwxht.50r\defendnot-loader.exeC:\Users\Admin\AppData\Local\Temp\0rctwxht.50r\defendnot-loader.exe1⤵
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C:\Windows\System32\Taskmgr.exeTaskmgr.exe2⤵
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C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /c pause2⤵
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C:\Program Files\Windows Defender\MpCmdRun.exe"C:\Program Files\Windows Defender\MpCmdRun.exe" -wdenable1⤵
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C:\Users\Admin\AppData\Local\Temp\lzl3cbok.4qd\defendnot-loader.exeC:\Users\Admin\AppData\Local\Temp\lzl3cbok.4qd\defendnot-loader.exe1⤵
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C:\Windows\System32\Taskmgr.exeTaskmgr.exe2⤵
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C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /c pause2⤵
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C:\Program Files\Windows Defender\MpCmdRun.exe"C:\Program Files\Windows Defender\MpCmdRun.exe" -wdenable1⤵
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C:\Users\Admin\AppData\Local\Temp\p4055dio.vge\defendnot-loader.exeC:\Users\Admin\AppData\Local\Temp\p4055dio.vge\defendnot-loader.exe1⤵
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C:\Windows\System32\Taskmgr.exeTaskmgr.exe2⤵
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C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /c pause2⤵
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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
Replay Monitor
Loading Replay Monitor...
Downloads
StartupProfileData-NonInteractive
StartupProfileData-NonInteractive
StartupProfileData-NonInteractive
StartupProfileData-NonInteractive
prep_Activatable Class_Hermes_perf.cache
ctx.bin
ctx.bin
defendnot-loader.exe
defendnot.dll
FzAozZayLTGm.bat
__PSScriptPolicyTest_sdcmlli2.sgn.ps1
UnknownFailed.zip
MpCmdRun.log
cleaner.exe
memory/2400-204-0x0000029E14210000-0x0000029E14230000-memory.dmp
memory/2400-170-0x0000029E03BF0000-0x0000029E03C10000-memory.dmp
memory/2400-158-0x0000029E001E0000-0x0000029E002E0000-memory.dmp
memory/2400-160-0x0000029E001E0000-0x0000029E002E0000-memory.dmp
memory/2400-171-0x0000029E13DF0000-0x0000029E13EF0000-memory.dmp
memory/2400-180-0x0000029E03D70000-0x0000029E03D90000-memory.dmp
memory/2988-40-0x00007FFF18BB0000-0x00007FFF19554000-memory.dmp
memory/2988-65-0x00007FFF18BB0000-0x00007FFF19554000-memory.dmp
memory/2988-1-0x0000027447BA0000-0x0000027447EA6000-memory.dmp
memory/2988-2-0x00007FFF18BB0000-0x00007FFF19554000-memory.dmp
memory/2988-3-0x00007FFF18BB0000-0x00007FFF19554000-memory.dmp
memory/2988-4-0x0000027448340000-0x000002744835E000-memory.dmp
memory/2988-5-0x00007FFF18BB0000-0x00007FFF19554000-memory.dmp
memory/2988-6-0x00007FFF18BB0000-0x00007FFF19554000-memory.dmp
memory/2988-7-0x00007FFF18BB0000-0x00007FFF19554000-memory.dmp
memory/2988-8-0x00007FFF18BB0000-0x00007FFF19554000-memory.dmp
memory/2988-9-0x00007FFF18BB0000-0x00007FFF19554000-memory.dmp
memory/2988-10-0x00007FFF18BB0000-0x00007FFF19554000-memory.dmp
memory/2988-11-0x00007FFF18BB0000-0x00007FFF19554000-memory.dmp
memory/2988-12-0x00007FFF18BB0000-0x00007FFF19554000-memory.dmp
memory/2988-13-0x00007FFF18BB0000-0x00007FFF19554000-memory.dmp
memory/2988-0-0x00007FFF18D3F000-0x00007FFF18D40000-memory.dmp
memory/2988-14-0x00007FFF18BB0000-0x00007FFF19554000-memory.dmp
memory/2988-15-0x00007FFF18BB0000-0x00007FFF19554000-memory.dmp
memory/2988-18-0x00007FFF18BB0000-0x00007FFF19554000-memory.dmp
memory/2988-51-0x00007FFF18BB0000-0x00007FFF19554000-memory.dmp
memory/2988-16-0x00007FFF18BB0000-0x00007FFF19554000-memory.dmp
memory/2988-17-0x00007FFF18BB0000-0x00007FFF19554000-memory.dmp
memory/2988-74-0x0000027462590000-0x000002746259A000-memory.dmp
memory/2988-75-0x00000274625C0000-0x00000274625D2000-memory.dmp
memory/4444-58-0x0000022F26130000-0x0000022F2617C000-memory.dmp
memory/4444-50-0x0000022F25ED0000-0x0000022F25F0A000-memory.dmp
memory/4444-57-0x0000022F26000000-0x0000022F26034000-memory.dmp
memory/4444-56-0x0000022F25290000-0x0000022F252B6000-memory.dmp
memory/4444-59-0x0000022F26180000-0x0000022F261CA000-memory.dmp
memory/4444-62-0x0000022F26040000-0x0000022F2606A000-memory.dmp
memory/4444-63-0x0000022F26370000-0x0000022F26382000-memory.dmp
memory/4444-64-0x0000022F263D0000-0x0000022F2640C000-memory.dmp
memory/4444-55-0x0000022F25FB0000-0x0000022F25FFE000-memory.dmp
memory/4444-66-0x0000022F26350000-0x0000022F2635A000-memory.dmp
memory/4444-67-0x0000022F263A0000-0x0000022F263A8000-memory.dmp
memory/4444-54-0x0000022F25F10000-0x0000022F25F5A000-memory.dmp
memory/4444-53-0x0000022F26070000-0x0000022F26122000-memory.dmp
memory/4444-52-0x0000022F25F60000-0x0000022F25FB0000-memory.dmp
memory/5896-19-0x00007FFF18BB0000-0x00007FFF19554000-memory.dmp
memory/5896-34-0x00007FFF18BB0000-0x00007FFF19554000-memory.dmp
memory/5896-42-0x00007FFF18BB0000-0x00007FFF19554000-memory.dmp
memory/5896-38-0x0000019FA5C70000-0x0000019FA5C7A000-memory.dmp
memory/5896-37-0x00007FFF18BB0000-0x00007FFF19554000-memory.dmp
memory/5896-33-0x0000019FA5ED0000-0x0000019FA5F82000-memory.dmp
memory/5896-36-0x00007FFF18BB0000-0x00007FFF19554000-memory.dmp
memory/5896-23-0x0000019FA5BC0000-0x0000019FA5BE2000-memory.dmp
memory/5896-35-0x00007FFF18BB0000-0x00007FFF19554000-memory.dmp
memory/5896-32-0x0000019FA5C80000-0x0000019FA5C9E000-memory.dmp
memory/5896-29-0x00007FFF18BB0000-0x00007FFF19554000-memory.dmp
memory/5896-20-0x00007FFF18BB0000-0x00007FFF19554000-memory.dmp
memory/5896-28-0x00007FFF18BB0000-0x00007FFF19554000-memory.dmp
memory/5896-26-0x00007FFF18BB0000-0x00007FFF19554000-memory.dmp
memory/5896-25-0x00007FFF18BB0000-0x00007FFF19554000-memory.dmp
memory/5896-24-0x00007FFF18BB0000-0x00007FFF19554000-memory.dmp