Analysis
- max time kernel
145s - max time network
151s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows - submitted
14/08/2026, 22:04
Static task
static1
Behavioral task
behavioral1
Sample
appinst_up001.exe
Resource
win10v2004-20260513-en
Behavioral task
behavioral2
Sample
appinst_up001.exe
Resource
win11ltsc2024-20260709-en
General
- Target appinst_up001.exe
- Size 36.8MB
- Sample260814-1zb4aaserd
- SHA256 29799006c39122d3c3481af17312a7c2440775424fee3f0741aab4c19037c75c
- MD5 b121627d603253512b66f99365ea9668
- SHA1 39adffbfe75f140c807c6b8ecffd3f2099633f7c
- SHA512 428536db4b2278c3316f49478f9d8028effa254411b2e52febc410f86915c974389e3cffcb04a539a45978abbdb4e61eebf5b1a98ab7be03c6f508167018394b
- SSDEEP 196608:AFnmfRW0ATZPh7c2Qp3BqtiEPFNPyDhC81eHIr:4SRgXQhDhf1uW
- TLSH T19187F84ABB41CDD9E136923894AB5F01E331E97186B1976333B02729CFDB38C8F66558
- 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 4732 powershell.exe - Executes dropped EXE 2 IoCs
pid Process 1928 bzhXwW.exe 1092 bzhXwW.exe - Loads dropped DLL 2 IoCs
pid Process 1928 bzhXwW.exe 1092 bzhXwW.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\\agh5LW\\bzhXwW.exe\"" bzhXwW.exe - Indicator Removal: Clear Persistence 1 TTPs 5 IoCs
Clear artifacts associated with previously established persistence like scheduletasks on a host.
pid Process 2436 cmd.exe 4772 cmd.exe 3664 cmd.exe 2856 cmd.exe 3872 cmd.exe - Drops file in System32 directory 1 IoCs
description ioc Process File created C:\Windows\System32\CodeIntegrity\SiPolicy.p7b bzhXwW.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 5124 cmd.exe 4084 cmd.exe 2652 cmd.exe 2456 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 5372 schtasks.exe 5648 schtasks.exe 1748 schtasks.exe 1828 schtasks.exe 2164 schtasks.exe - Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 2744 appinst_up001.exe 2744 appinst_up001.exe 2744 appinst_up001.exe 2744 appinst_up001.exe 2744 appinst_up001.exe 2744 appinst_up001.exe 2744 appinst_up001.exe 2744 appinst_up001.exe 2744 appinst_up001.exe 2744 appinst_up001.exe 2744 appinst_up001.exe 2744 appinst_up001.exe 2744 appinst_up001.exe 2744 appinst_up001.exe 2744 appinst_up001.exe 2744 appinst_up001.exe 2744 appinst_up001.exe 2744 appinst_up001.exe 2744 appinst_up001.exe 2744 appinst_up001.exe 2744 appinst_up001.exe 2744 appinst_up001.exe 2744 appinst_up001.exe 2744 appinst_up001.exe 2744 appinst_up001.exe 2744 appinst_up001.exe 2744 appinst_up001.exe 2744 appinst_up001.exe 2744 appinst_up001.exe 2744 appinst_up001.exe 2744 appinst_up001.exe 2744 appinst_up001.exe 1928 bzhXwW.exe 1928 bzhXwW.exe 1928 bzhXwW.exe 1928 bzhXwW.exe 1928 bzhXwW.exe 1928 bzhXwW.exe 1928 bzhXwW.exe 1928 bzhXwW.exe 1928 bzhXwW.exe 1928 bzhXwW.exe 1928 bzhXwW.exe 1928 bzhXwW.exe 1928 bzhXwW.exe 1928 bzhXwW.exe 1928 bzhXwW.exe 1928 bzhXwW.exe 1928 bzhXwW.exe 1928 bzhXwW.exe 1928 bzhXwW.exe 1928 bzhXwW.exe 1928 bzhXwW.exe 1928 bzhXwW.exe 1928 bzhXwW.exe 1928 bzhXwW.exe 1928 bzhXwW.exe 1928 bzhXwW.exe 1928 bzhXwW.exe 1928 bzhXwW.exe 1928 bzhXwW.exe 1928 bzhXwW.exe 1928 bzhXwW.exe 1928 bzhXwW.exe - Suspicious behavior: LoadsDriver 6 IoCs
pid Process 820 Process not Found 820 Process not Found 820 Process not Found 820 Process not Found 820 Process not Found 820 Process not Found - Suspicious use of WriteProcessMemory 8 IoCs
description pid Process procid_target PID 1928 wrote to memory of 4732 1928 bzhXwW.exe 93 PID 1928 wrote to memory of 2856 1928 bzhXwW.exe 95 PID 2856 wrote to memory of 1748 2856 cmd.exe 97 PID 1928 wrote to memory of 3872 1928 bzhXwW.exe 98 PID 2856 wrote to memory of 5656 2856 cmd.exe 100 PID 1928 wrote to memory of 2436 1928 bzhXwW.exe 103 PID 3872 wrote to memory of 1828 3872 cmd.exe 106 PID 2856 wrote to memory of 2168 2856 cmd.exe 107 - 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\appinst_up001.exe"C:\Users\Admin\AppData\Local\Temp\appinst_up001.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
PID:2744
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C:\Users\Public\agh5LW\bzhXwW.exe"C:\Users\Public\agh5LW\bzhXwW.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:1928 -
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
PID:4732
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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\agh5LW\" /t REG_DWORD /d 0 /f" & SCHTASKS /Run /TN "Task1" & SCHTASKS /Delete /TN "Task1" /F2⤵
- Indicator Removal: Clear Persistence
- Suspicious use of WriteProcessMemory
PID:2856 -
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\agh5LW\" /t REG_DWORD /d 0 /f"3⤵
- Scheduled Task/Job: Scheduled Task
PID:1748
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C:\Windows\system32\schtasks.exeSCHTASKS /Run /TN "Task1"3⤵PID:5656
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C:\Windows\system32\schtasks.exeSCHTASKS /Delete /TN "Task1" /F3⤵PID:2168
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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:3872 -
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:1828
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C:\Windows\system32\schtasks.exeSCHTASKS /Run /TN "Task1"3⤵PID:5728
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C:\Windows\system32\schtasks.exeSCHTASKS /Delete /TN "Task1" /F3⤵PID:2528
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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
PID:2436 -
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:2164
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C:\Windows\system32\schtasks.exeSCHTASKS /Run /TN "Task1"3⤵PID:4676
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C:\Windows\system32\schtasks.exeSCHTASKS /Delete /TN "Task1" /F3⤵PID:4612
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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
PID:4772 -
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:5372
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C:\Windows\system32\schtasks.exeSCHTASKS /Run /TN "Task1"3⤵PID:2732
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C:\Windows\system32\schtasks.exeSCHTASKS /Delete /TN "Task1" /F3⤵PID:5940
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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
PID:3664 -
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:5648
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C:\Windows\system32\schtasks.exeSCHTASKS /Run /TN "Task1"3⤵PID:2704
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C:\Windows\system32\schtasks.exeSCHTASKS /Delete /TN "Task1" /F3⤵PID:5852
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C:\Users\Public\agh5LW\bzhXwW.exe"C:\Users\Public\agh5LW\bzhXwW.exe"1⤵
- Executes dropped EXE
- Loads dropped DLL
PID:1092
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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\agh5LW" /t REG_DWORD /d 0 /f1⤵
- Executes a command shell one-liner
PID:5124 -
C:\Windows\System32\reg.exereg add "HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths" /v "C:\Users\Public\agh5LW" /t REG_DWORD /d 0 /f2⤵PID:6004
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C:\Windows\system32\cmd.execmd.exe1⤵PID:6060
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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
PID:4084 -
C:\Windows\System32\reg.exereg add "HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths" /v "C:\Users" /t REG_DWORD /d 0 /f2⤵PID:3836
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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
PID:2652 -
C:\Windows\System32\reg.exereg add "HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths" /v "C:\Program Files (x86)" /t REG_DWORD /d 0 /f2⤵PID:1244
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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
PID:2456 -
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:5136
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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\agh5LW\UxEnhance64.dll
- Size 3.1MB
- SHA256 ecdf2f3566016e85373ce4b79d8bdf74f9693fd60d5e96ab5e21066fcbcbcba2
- MD5 e1d39da8209facb0b8f456e4edbe3ae8
- SHA1 60d583493a85168e9555a985f8c6c1776e9dc4cc
- SHA512 468ecb6fa964e7e0757c27d277314eb31ff8a412c924c394db3e9a43235967c635d55e61a57aecf186094a604cec73579be4c63ce248b2c367b2990acfdbcc81
- SSDEEP 49152:P9KpI8cBa0kj6BK0x3TiMQclkGo2PXk6rkwuuWG/+WizBedfb77N3SnKrKB+9:P9m29xx3Tiqt06ox6+z2rNNrKo9
- TLSH T1D6E523E5B6D739F6D023CBF4DA62A1AD70393F505F635C5F3B8929014E62228973A390
- MD5 SHA1 SHA512 SSDEEP TLSH
- Path C:\Users\Public\agh5LW\adoresd.dat
- Size 4.7MB
- SHA256 35b9419e4850a3f9223fb2925a206573e4655150fa597f1716f38c570be8a34e
- MD5 e9e1b4e2d685cb97f9b6ef9dbf363281
- SHA1 a7d3cc6f27c242389b0320f047161c01d61f1734
- SHA512 96ce8f16b9219ea79bdcbcc76ea70197cecfca7ffb6529e42eeb351ca43f812d7db177658a9640514094bf35caa4962ace8f3cdaedb34a35d3709c0f2cc1b086
- SSDEEP 98304:Vmu1SwODpRGIRdXEMZYe6rFLoTTpMk6ZGvQv0Ss2i+XZXea1v5WZd8uCp:gu1SwOflfZPF6Ma0bsoa5+qd
- TLSH T1113633368AE6F5C7E35B2A0AF36888DD12B0B7AD6E9D75C24AF070145DB30CE9015BC4
- MD5 SHA1 SHA512 SSDEEP TLSH
- Path C:\Users\Public\agh5LW\bzhXwW.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\agh5LW\msadox.tb
- Size 8KB
- SHA256 153315d6b4e5335d84e0cd12ffcd225db3936680e10755534e8d100eca370f5f
- MD5 0952774276e005fe8ec63d3c7a8fe47c
- SHA1 f6f2e473e28506708bc55c1f732099ba6b1fc6e5
- SHA512 62fdad6334435d964ece8de33a29ccfe356f7202b7d8a43c6e17e25a420c99308909ded787c3181f9436dc9809ddbec046fcaf06a90bb63ca7f3c5846a3b88e1
- SSDEEP 192:8qbZajnZ45X1q3JXglD+3vR8cwNhIMCGe2y0PQp:8sZqZOXQ3uqvR2Kfzp
- TLSH T159029E05D7A20CC3D2016C71CD9EB2F5AB13A1DADA3926719C67D4C167072DD2CE620D
- MD5 SHA1 SHA512 SSDEEP TLSH