Analysis
- max time kernel
143s - max time network
157s - platform
windows10-2004_x64 - resource
win10v2004-20220812-en - resource tags
arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system - submitted
03/10/2022, 04:15
Static task
static1
1 signatures
Behavioral task
behavioral1
Sample
tmp.exe
Resource
win7-20220812-en
8 signatures
150 seconds
General
- Target tmp.exe
- Size 16KB
- Sample221003-evd67ahacq
- SHA256 53aef6261df3f802393d9196a5c87e69d1e07e2aaff45a606344b91f5801255a
- MD5 d7f2c50640108c104286ef71923c70d7
- SHA1 7ccd84daed8ca9572ae3a8c98c38adf753fb8f33
- SHA512 eeb34a038920d0ff833f3140afd256dd6a0ea589052223d9bf61135d4557e8302e582782893348a7d40ef07af0c68a3068a052822d244ad65b7365cd0aeea0f0
- SSDEEP 384:aGDtcgI/NNcJAQ+cprMzboXyfPMexhHTQ9KQUxZ:aGDtcgI/NNcJ/+grWbrF8i
- MD5 SHA1 SHA512 SSDEEP
Malware Config
Signatures
- Contains code to disable Windows Defender 1 IoCs
A .NET executable tasked with disabling Windows Defender capabilities such as realtime monitoring, blocking at first seen, etc.
resource yara_rule behavioral2/memory/2040-132-0x0000000000E60000-0x0000000000E6A000-memory.dmp disable_win_def -
description ioc Process Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableScanOnRealtimeEnable = "1" tmp.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableRealtimeMonitoring = "1" tmp.exe Key created \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Policies\Microsoft\Windows Defender\Real-Time Protection tmp.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableBehaviorMonitoring = "1" tmp.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableOnAccessProtection = "1" tmp.exe - Modifies security service 2 TTPs 2 IoCs
description ioc Process Set value (int) \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\WinDefend\Start = "4" tmp.exe Set value (int) \REGISTRY\MACHINE\SYSTEM\ControlSet002\Services\WinDefend\Start = "4" tmp.exe -
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows Defender\Features tmp.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows Defender\Features\TamperProtection = "0" tmp.exe - Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
pid Process 4972 schtasks.exe - Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 3952 powershell.exe 3952 powershell.exe - Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 3952 powershell.exe - Suspicious use of WriteProcessMemory 6 IoCs
description pid Process procid_target PID 2040 wrote to memory of 3952 2040 tmp.exe 82 PID 2040 wrote to memory of 3952 2040 tmp.exe 82 PID 2040 wrote to memory of 3952 2040 tmp.exe 82 PID 2040 wrote to memory of 4972 2040 tmp.exe 84 PID 2040 wrote to memory of 4972 2040 tmp.exe 84 PID 2040 wrote to memory of 4972 2040 tmp.exe 84
Processes
-
C:\Users\Admin\AppData\Local\Temp\tmp.exe"C:\Users\Admin\AppData\Local\Temp\tmp.exe"1⤵
- Modifies Windows Defender Real-time Protection settings
- Modifies security service
- Windows security modification
- Suspicious use of WriteProcessMemory
PID:2040 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"powershell" Get-MpPreference -verbose2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3952
-
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C:\Windows\SysWOW64\schtasks.exe"schtasks" /create /tn "svchost" /sc ONLOGON /tr "C:\Users\Admin\AppData\Local\Temp\tmp.exe" /rl HIGHEST /f2⤵
- Creates scheduled task(s)
PID:4972
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