Analysis
- max time kernel
150s - max time network
152s - platform
windows10-2004_x64 - resource
win10v2004-20260513-en - resource tags
arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows - submitted
04/08/2026, 22:56
Static task
static1
Behavioral task
behavioral1
Sample
inst_smt008.exe
Resource
win10v2004-20260513-en
Behavioral task
behavioral2
Sample
inst_smt008.exe
Resource
win11ltsc2024-20260709-en
General
- Target inst_smt008.exe
- Size 55.2MB
- Sample260804-2wv8esaa86
- SHA256 19298751d584043ff3b51e49098fcee8a972d883ebfd08d6f013833c4e8d311c
- MD5 54728111f61a30f9711ad7cfc399d2ae
- SHA1 f0d7f71970271992fc3b278acf185e778c4e24ea
- SHA512 ca04d87708187320f3da297b679567da9338fc180362253d72035e3377229675e0c7e8051d4c4318387fcb80a3c362306896148cb5b40520d5123ababd3793a0
- SSDEEP 196608:InnmbV2qWwRNTc+u1aZfO8pP+QDhb6Z/LzEnSQ5Ps6s:iSRe9QDM
- TLSH T1A6C78406F702899AD4799338488B4F91B372ECF14AB6972323B8733D2EFA35C5E91545
- MD5 SHA1 SHA512 SSDEEP TLSH
Malware Config
Signatures
- Windows security bypass 2 TTPs 8 IoCs
description ioc Process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Users\Public\OptMfo = "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:\ProgramData = "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 = "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 Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths reg.exe - Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-876885714-46325919-1482798410-1000\Control Panel\International\Geo\Nation KfcLzL.exe - Executes dropped EXE 2 IoCs
pid Process 1004 KfcLzL.exe 3876 KfcLzL.exe - Loads dropped DLL 2 IoCs
pid Process 1004 KfcLzL.exe 3876 KfcLzL.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\\OptMfo\\KfcLzL.exe\"" KfcLzL.exe - Indicator Removal: Clear Persistence 1 TTPs 5 IoCs
Clear artifacts associated with previously established persistence like scheduletasks on a host.
pid Process 4440 cmd.exe 4988 cmd.exe 1216 cmd.exe 4860 cmd.exe 3452 cmd.exe - Drops file in System32 directory 1 IoCs
description ioc Process File created C:\Windows\System32\CodeIntegrity\SiPolicy.p7b KfcLzL.exe - Drops file in Program Files directory 2 IoCs
description ioc Process File created C:\Program Files (x86)\AaB95C\AaB95C.exe KfcLzL.exe File opened for modification C:\Program Files (x86)\AaB95C KfcLzL.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 2036 cmd.exe 1552 cmd.exe 1656 cmd.exe 1792 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 4820 schtasks.exe 4188 schtasks.exe 4924 schtasks.exe 1156 schtasks.exe 2868 schtasks.exe - Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 4140 inst_smt008.exe 4140 inst_smt008.exe 4140 inst_smt008.exe 4140 inst_smt008.exe 4140 inst_smt008.exe 4140 inst_smt008.exe 4140 inst_smt008.exe 4140 inst_smt008.exe 4140 inst_smt008.exe 4140 inst_smt008.exe 4140 inst_smt008.exe 4140 inst_smt008.exe 4140 inst_smt008.exe 4140 inst_smt008.exe 4140 inst_smt008.exe 4140 inst_smt008.exe 4140 inst_smt008.exe 4140 inst_smt008.exe 4140 inst_smt008.exe 4140 inst_smt008.exe 4140 inst_smt008.exe 4140 inst_smt008.exe 4140 inst_smt008.exe 4140 inst_smt008.exe 4140 inst_smt008.exe 4140 inst_smt008.exe 4140 inst_smt008.exe 4140 inst_smt008.exe 4140 inst_smt008.exe 4140 inst_smt008.exe 4140 inst_smt008.exe 4140 inst_smt008.exe 1004 KfcLzL.exe 1004 KfcLzL.exe 1004 KfcLzL.exe 1004 KfcLzL.exe 1004 KfcLzL.exe 1004 KfcLzL.exe 1004 KfcLzL.exe 1004 KfcLzL.exe 1004 KfcLzL.exe 1004 KfcLzL.exe 1004 KfcLzL.exe 1004 KfcLzL.exe 1004 KfcLzL.exe 1004 KfcLzL.exe 1004 KfcLzL.exe 1004 KfcLzL.exe 1004 KfcLzL.exe 1004 KfcLzL.exe 1004 KfcLzL.exe 1004 KfcLzL.exe 1004 KfcLzL.exe 1004 KfcLzL.exe 1004 KfcLzL.exe 1004 KfcLzL.exe 1004 KfcLzL.exe 1004 KfcLzL.exe 1004 KfcLzL.exe 1004 KfcLzL.exe 1004 KfcLzL.exe 1004 KfcLzL.exe 1004 KfcLzL.exe 1004 KfcLzL.exe - Suspicious behavior: LoadsDriver 3 IoCs
pid Process 668 Process not Found 668 Process not Found 668 Process not Found - Suspicious use of WriteProcessMemory 24 IoCs
description pid Process procid_target PID 1004 wrote to memory of 4988 1004 KfcLzL.exe 99 PID 4988 wrote to memory of 4820 4988 cmd.exe 102 PID 4988 wrote to memory of 3856 4988 cmd.exe 103 PID 4988 wrote to memory of 3852 4988 cmd.exe 106 PID 1004 wrote to memory of 1216 1004 KfcLzL.exe 108 PID 1216 wrote to memory of 4188 1216 cmd.exe 110 PID 1216 wrote to memory of 4808 1216 cmd.exe 112 PID 1216 wrote to memory of 4740 1216 cmd.exe 115 PID 1004 wrote to memory of 4860 1004 KfcLzL.exe 116 PID 1552 wrote to memory of 1588 1552 cmd.exe 114 PID 1656 wrote to memory of 5052 1656 cmd.exe 119 PID 4860 wrote to memory of 4924 4860 cmd.exe 120 PID 1004 wrote to memory of 3452 1004 KfcLzL.exe 121 PID 4860 wrote to memory of 2652 4860 cmd.exe 123 PID 3452 wrote to memory of 1156 3452 cmd.exe 125 PID 4860 wrote to memory of 2524 4860 cmd.exe 127 PID 3452 wrote to memory of 3224 3452 cmd.exe 128 PID 3452 wrote to memory of 4044 3452 cmd.exe 129 PID 1792 wrote to memory of 4772 1792 cmd.exe 130 PID 1004 wrote to memory of 4440 1004 KfcLzL.exe 131 PID 4440 wrote to memory of 2868 4440 cmd.exe 133 PID 4440 wrote to memory of 1664 4440 cmd.exe 134 PID 2036 wrote to memory of 3800 2036 cmd.exe 137 PID 4440 wrote to memory of 4564 4440 cmd.exe 138 - 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\inst_smt008.exe"C:\Users\Admin\AppData\Local\Temp\inst_smt008.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
PID:4140
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C:\Users\Public\OptMfo\KfcLzL.exeC:\Users\Public\OptMfo\KfcLzL.exe1⤵
- Checks computer location settings
- 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:1004 -
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\OptMfo\" /t REG_DWORD /d 0 /f" & SCHTASKS /Run /TN "Task1" & SCHTASKS /Delete /TN "Task1" /F2⤵
- Indicator Removal: Clear Persistence
- Suspicious use of WriteProcessMemory
PID:4988 -
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\OptMfo\" /t REG_DWORD /d 0 /f"3⤵
- Scheduled Task/Job: Scheduled Task
PID:4820
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C:\Windows\system32\schtasks.exeSCHTASKS /Run /TN "Task1"3⤵PID:3856
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C:\Windows\system32\schtasks.exeSCHTASKS /Delete /TN "Task1" /F3⤵PID:3852
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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:1216 -
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:4188
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C:\Windows\system32\schtasks.exeSCHTASKS /Run /TN "Task1"3⤵PID:4808
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C:\Windows\system32\schtasks.exeSCHTASKS /Delete /TN "Task1" /F3⤵PID:4740
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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:4860 -
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:4924
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C:\Windows\system32\schtasks.exeSCHTASKS /Run /TN "Task1"3⤵PID:2652
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C:\Windows\system32\schtasks.exeSCHTASKS /Delete /TN "Task1" /F3⤵PID:2524
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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:3452 -
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:1156
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C:\Windows\system32\schtasks.exeSCHTASKS /Run /TN "Task1"3⤵PID:3224
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C:\Windows\system32\schtasks.exeSCHTASKS /Delete /TN "Task1" /F3⤵PID:4044
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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:4440 -
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:2868
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C:\Windows\system32\schtasks.exeSCHTASKS /Run /TN "Task1"3⤵PID:1664
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C:\Windows\system32\schtasks.exeSCHTASKS /Delete /TN "Task1" /F3⤵PID:4564
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C:\Users\Public\OptMfo\KfcLzL.exe"C:\Users\Public\OptMfo\KfcLzL.exe"1⤵
- Executes dropped EXE
- Loads dropped DLL
PID:3876
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C:\Windows\system32\cmd.execmd.exe /c reg add "HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths" /v "C:\Users\Public\OptMfo" /t REG_DWORD /d 0 /f1⤵
- Executes a command shell one-liner
- Suspicious use of WriteProcessMemory
PID:1552 -
C:\Windows\system32\reg.exereg add "HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths" /v "C:\Users\Public\OptMfo" /t REG_DWORD /d 0 /f2⤵
- Windows security bypass
PID:1588
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C:\Windows\system32\cmd.execmd.exe1⤵PID:4552
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C:\Windows\system32\cmd.execmd.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:1656 -
C:\Windows\system32\reg.exereg add "HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths" /v "C:\ProgramData" /t REG_DWORD /d 0 /f2⤵
- Windows security bypass
PID:5052
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C:\Windows\system32\cmd.execmd.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:1792 -
C:\Windows\system32\reg.exereg add "HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths" /v "C:\Users" /t REG_DWORD /d 0 /f2⤵
- Windows security bypass
PID:4772
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C:\Windows\system32\cmd.execmd.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:2036 -
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:3800
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Network
MITRE ATT&CK Enterprise v16
Execution
Command and Scripting Interpreter
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\OptMfo\KfcLzL.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\OptMfo\UxEnhance64.dll
- Size 3.1MB
- SHA256 61e850ce034b226f3449eca614c70e36e2d27d1474c36f92b44f4d0f3beb89bc
- MD5 663088a0c2de78833b16eccd871c2ade
- SHA1 3215160131ac6a917d96317962d880b795be818b
- SHA512 0abdc4fad4dd66ca401ad44d831e805b885f95cc441038d2eaa963e31f4132d1ab507406b7ab97bbe7c54e6ab204fc4faae8af4bbc70fef01f785a54f688a8c1
- SSDEEP 49152:P9KpI8cBa0kj6BK0x3TiMQclkGo2PXk6rkwuuWG/+WizBedfb77N3SnKrKB+d:P9m29xx3Tiqt06ox6+z2rNNrKod
- TLSH T15EE523E5B6D739F6D023CBF4DA62A1AD70393F505F635C5F3B8929014E62228973A390
- MD5 SHA1 SHA512 SSDEEP TLSH
- Path C:\Users\Public\OptMfo\adoresd.dat
- Size 4.7MB
- SHA256 642da59a3ebe6e6af3e69fdc897d53d63a9543e24401c3720ee36e0552724292
- MD5 efb6dcac1f831a0cc61020c1d74e75e1
- SHA1 d510dc1d02844ebf39ecafa4d72e1f407be955a7
- SHA512 bfe0d561b1ad3f36ab75d1cbcbd4cab25c9f8a07d98d000d0dbbec7cfb676fdcbe405dbfff4c63a1a1c0f0984df27ba13857904e58489969d6d3358abe175672
- SSDEEP 98304:qmu1SwODpRGIRdXEMZYe6rFLoTTpMk6ZGvQv0Ss2i+XZXea1v5WZd8uCp:5u1SwOflfZPF6Ma0bsoa5+qd
- TLSH T1A53633368AE6F5C7E35B2A0AF36888DD12B0B7AD6E9D75C24AF070145DB30CE9015BC4
- MD5 SHA1 SHA512 SSDEEP TLSH
- Path C:\Users\Public\OptMfo\msadox.tb
- Size 8KB
- SHA256 7c78b90f670ad8816daedfcf268498aa5a75f88f84e8dca5c8a99b96fb56b888
- MD5 94d0775b83ae30b2f2ba8b0d2b217751
- SHA1 4e363a2039dfccc95ea3925d207b642a398cf6fe
- SHA512 3a78b26659133fbedff1863a98f6a54eb4da3325d07e2ed1694ad743cfa0a20c6c03f2c1258f829107c4d90520b22ba5a0d4819cee974883a0e4dfb405af0a80
- SSDEEP 192:AqbZajnZ45X1q3JXglD+3vR8cwNhIMCGe2y0PQp:AsZqZOXQ3uqvR2Kfzp
- TLSH T128029E05D7A20CC3D2016C71CD9EB2F5AB13A1DADA3926719C67D4C167072DD2CE620D
- MD5 SHA1 SHA512 SSDEEP TLSH