Analysis
- max time kernel
150s - max time network
153s - 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, 19:08
Static task
static1
Behavioral task
behavioral1
Sample
inst_smt012.exe
Resource
win10v2004-20260513-en
Behavioral task
behavioral2
Sample
inst_smt012.exe
Resource
win11ltsc2024-20260709-en
General
- Target inst_smt012.exe
- Size 55.2MB
- Sample260804-xtfbzacm9s
- SHA256 8df4857952b9a077fcf6bc954b64db5ef84d4561625f6caa5cfec60269e5ad73
- MD5 4136d2a743ac59fc6b8f2b7019e8ef51
- SHA1 086a20d1e6a63c669ea4e63fb0a410774bb8abac
- SHA512 9ee7ace4570b3e05a943c553a35585abb81938c806cf63c7a7ba6b106cd6e15c9c174efc5224255059bb4d46115a3e21452146687289a4c839df62dcb0cee025
- SSDEEP 196608:KnnmbV2qWwRNTc+u1aZfO8pP+QDhb6Z/LzEnSQ5Ps61:sSRe9QDV
- TLSH T1CCC78406F702899AD4799338488B4F91B372ECF14AB6972323B8733D2EFA35C5E91545
- MD5 SHA1 SHA512 SSDEEP TLSH
Malware Config
Signatures
- Windows security bypass 2 TTPs 6 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\Admin\Documents = "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\Public\BJVhgL = "0" 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-1-5-21-1074038928-2032447174-945360078-1000\Control Panel\International\Geo\Nation cbBhba.exe - Executes dropped EXE 2 IoCs
pid Process 2712 cbBhba.exe 3068 cbBhba.exe - Loads dropped DLL 2 IoCs
pid Process 2712 cbBhba.exe 3068 cbBhba.exe - Adds Run key to start application 2 TTPs 2 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Tencent SecurityHealth = "\"C:\\Users\\Public\\BJVhgL\\cbBhba.exe\"" cbBhba.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Tencent SecurityHealth = "\"C:\\Users\\Public\\BJVhgL\\cbBhba.exe\"" cbBhba.exe - Indicator Removal: Clear Persistence 1 TTPs 5 IoCs
Clear artifacts associated with previously established persistence like scheduletasks on a host.
pid Process 4696 cmd.exe 2096 cmd.exe 4500 cmd.exe 1548 cmd.exe 4320 cmd.exe - Drops file in System32 directory 2 IoCs
description ioc Process File created C:\Windows\System32\CodeIntegrity\SiPolicy.p7b cbBhba.exe File opened for modification C:\Windows\System32\CodeIntegrity\SiPolicy.p7b cbBhba.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 3940 cmd.exe 4844 cmd.exe 3316 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 1444 schtasks.exe 1588 schtasks.exe 4388 schtasks.exe 628 schtasks.exe 1916 schtasks.exe - Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 460 inst_smt012.exe 460 inst_smt012.exe 460 inst_smt012.exe 460 inst_smt012.exe 460 inst_smt012.exe 460 inst_smt012.exe 460 inst_smt012.exe 460 inst_smt012.exe 460 inst_smt012.exe 460 inst_smt012.exe 460 inst_smt012.exe 460 inst_smt012.exe 460 inst_smt012.exe 460 inst_smt012.exe 460 inst_smt012.exe 460 inst_smt012.exe 460 inst_smt012.exe 460 inst_smt012.exe 460 inst_smt012.exe 460 inst_smt012.exe 460 inst_smt012.exe 460 inst_smt012.exe 460 inst_smt012.exe 460 inst_smt012.exe 460 inst_smt012.exe 460 inst_smt012.exe 460 inst_smt012.exe 460 inst_smt012.exe 460 inst_smt012.exe 460 inst_smt012.exe 460 inst_smt012.exe 460 inst_smt012.exe 2712 cbBhba.exe 2712 cbBhba.exe 2712 cbBhba.exe 2712 cbBhba.exe 2712 cbBhba.exe 2712 cbBhba.exe 2712 cbBhba.exe 2712 cbBhba.exe 2712 cbBhba.exe 2712 cbBhba.exe 2712 cbBhba.exe 2712 cbBhba.exe 2712 cbBhba.exe 2712 cbBhba.exe 2712 cbBhba.exe 2712 cbBhba.exe 2712 cbBhba.exe 2712 cbBhba.exe 2712 cbBhba.exe 2712 cbBhba.exe 2712 cbBhba.exe 2712 cbBhba.exe 2712 cbBhba.exe 2712 cbBhba.exe 2712 cbBhba.exe 2712 cbBhba.exe 2712 cbBhba.exe 2712 cbBhba.exe 2712 cbBhba.exe 2712 cbBhba.exe 2712 cbBhba.exe 2712 cbBhba.exe - Suspicious behavior: LoadsDriver 8 IoCs
pid Process 664 Process not Found 664 Process not Found 664 Process not Found 664 Process not Found 664 Process not Found 664 Process not Found 664 Process not Found 664 Process not Found - Suspicious use of WriteProcessMemory 23 IoCs
description pid Process procid_target PID 2712 wrote to memory of 4500 2712 cbBhba.exe 106 PID 4500 wrote to memory of 1444 4500 cmd.exe 109 PID 2712 wrote to memory of 1548 2712 cbBhba.exe 110 PID 4500 wrote to memory of 2412 4500 cmd.exe 112 PID 1548 wrote to memory of 1588 1548 cmd.exe 114 PID 4500 wrote to memory of 4872 4500 cmd.exe 116 PID 1548 wrote to memory of 4940 1548 cmd.exe 117 PID 2712 wrote to memory of 4320 2712 cbBhba.exe 119 PID 1548 wrote to memory of 3724 1548 cmd.exe 122 PID 4320 wrote to memory of 4388 4320 cmd.exe 123 PID 3940 wrote to memory of 3828 3940 cmd.exe 124 PID 2712 wrote to memory of 4696 2712 cbBhba.exe 125 PID 4320 wrote to memory of 1500 4320 cmd.exe 127 PID 2712 wrote to memory of 2096 2712 cbBhba.exe 129 PID 4320 wrote to memory of 1076 4320 cmd.exe 131 PID 4696 wrote to memory of 628 4696 cmd.exe 132 PID 2096 wrote to memory of 1916 2096 cmd.exe 133 PID 4696 wrote to memory of 1936 4696 cmd.exe 134 PID 4696 wrote to memory of 4048 4696 cmd.exe 137 PID 2096 wrote to memory of 3400 2096 cmd.exe 138 PID 2096 wrote to memory of 4552 2096 cmd.exe 140 PID 3316 wrote to memory of 4368 3316 cmd.exe 141 PID 4844 wrote to memory of 5048 4844 cmd.exe 142 - 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_smt012.exe"C:\Users\Admin\AppData\Local\Temp\inst_smt012.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
PID:460
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C:\Users\Public\BJVhgL\cbBhba.exeC:\Users\Public\BJVhgL\cbBhba.exe1⤵
- Checks computer location settings
- 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:2712 -
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\BJVhgL\" /t REG_DWORD /d 0 /f" & SCHTASKS /Run /TN "Task1" & SCHTASKS /Delete /TN "Task1" /F2⤵
- Indicator Removal: Clear Persistence
- Suspicious use of WriteProcessMemory
PID:4500 -
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\BJVhgL\" /t REG_DWORD /d 0 /f"3⤵
- Scheduled Task/Job: Scheduled Task
PID:1444
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C:\Windows\system32\schtasks.exeSCHTASKS /Run /TN "Task1"3⤵PID:2412
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C:\Windows\system32\schtasks.exeSCHTASKS /Delete /TN "Task1" /F3⤵PID:4872
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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:1548 -
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:1588
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C:\Windows\system32\schtasks.exeSCHTASKS /Run /TN "Task1"3⤵PID:4940
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C:\Windows\system32\schtasks.exeSCHTASKS /Delete /TN "Task1" /F3⤵PID:3724
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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: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\" /t REG_DWORD /d 0 /f"3⤵
- Scheduled Task/Job: Scheduled Task
PID:4388
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C:\Windows\system32\schtasks.exeSCHTASKS /Run /TN "Task1"3⤵PID:1500
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C:\Windows\system32\schtasks.exeSCHTASKS /Delete /TN "Task1" /F3⤵PID:1076
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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:4696 -
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:628
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C:\Windows\system32\schtasks.exeSCHTASKS /Run /TN "Task1"3⤵PID:1936
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C:\Windows\system32\schtasks.exeSCHTASKS /Delete /TN "Task1" /F3⤵PID:4048
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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:2096 -
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:1916
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C:\Windows\system32\schtasks.exeSCHTASKS /Run /TN "Task1"3⤵PID:3400
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C:\Windows\system32\schtasks.exeSCHTASKS /Delete /TN "Task1" /F3⤵PID:4552
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C:\Users\Public\BJVhgL\cbBhba.exe"C:\Users\Public\BJVhgL\cbBhba.exe"1⤵
- Executes dropped EXE
- Loads dropped DLL
- Adds Run key to start application
- Drops file in System32 directory
PID:3068
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C:\Windows\system32\cmd.execmd.exe /c reg add "HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths" /v "C:\Users\Public\BJVhgL" /t REG_DWORD /d 0 /f1⤵
- Executes a command shell one-liner
- Suspicious use of WriteProcessMemory
PID:3940 -
C:\Windows\system32\reg.exereg add "HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths" /v "C:\Users\Public\BJVhgL" /t REG_DWORD /d 0 /f2⤵
- Windows security bypass
PID:3828
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C:\Windows\system32\cmd.execmd.exe1⤵PID:3944
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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:4844 -
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:5048
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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:3316 -
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:4368
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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
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Downloads
- Path C:\Users\Public\BJVhgL\UxEnhance64.dll
- Size 3.1MB
- SHA256 92020834b1602682a3881211adb6129f720f563c4d6dd04b4c97d0175e762d0f
- MD5 47275ebe7625f319092db11032a3cb7b
- SHA1 94d446c527c52d9f8229264bbb3d718406e84a5b
- SHA512 2622788d10d9b88383faec88af9ff0d49e9471a3b910749bac1ec511471d34d6cc5dc2b31405ef3c0464172f31913411604f8da3efb68d33e4a103e589531c03
- SSDEEP 49152:P9KpI8cBa0kj6BK0x3TiMQclkGo2PXk6rkwuuWG/+WizBedfb77N3SnKrKB+q:P9m29xx3Tiqt06ox6+z2rNNrKoq
- TLSH T199E523E5B6D739F6D023CBF4DA62A1AD70393F505F635C5F3B8929014E62228973A390
- MD5 SHA1 SHA512 SSDEEP TLSH
- Path C:\Users\Public\BJVhgL\adoresd.dat
- Size 4.7MB
- SHA256 6a699e15cc4856aa51b660c5b6843cfa68db6a159374838478929df2d691c66b
- MD5 47c47f9ffbca6090986f0d8b7048e880
- SHA1 129f6426f62dacaf252e67612345a62f63d6a492
- SHA512 0c150a9fcce4689074d463b86f545de029f80b7970d39d0084671bbf35e34fc859046cb0fbaa1c8d99b0c58a7540f61ea9c57680a761be88fd955dacc3fd08fb
- SSDEEP 98304:Rmu1SwODpRGIRdXEMZYe6rFLoTTpMk6ZGvQv0Ss2i+XZXea1v5WZd8uCp:Eu1SwOflfZPF6Ma0bsoa5+qd
- TLSH T16A3633368AE6F5C7E35B2A0AF36888DD12B0B7AD6E9D75C24AF070145DB30CE9015BC4
- MD5 SHA1 SHA512 SSDEEP TLSH
- Path C:\Users\Public\BJVhgL\cbBhba.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\BJVhgL\msadox.tb
- Size 8KB
- SHA256 60308a9f9d5e1f68c93dae057ce24169168e71a28e71f478278c3dc265d324e0
- MD5 b63aed8976e4cb5ba37b4d2ea54d0de0
- SHA1 9a81151ea9fb6ea5eaa1e830c73d990191a52146
- SHA512 7ab9bfbcf3de66eedc291ba0e7f81cf02cb2577453403ab6192811eea4fda4e1d351eac446ab6bfbd8608267df3a21d01dadf75274a1975bbd6e4ae424fb9bbe
- SSDEEP 192:aqbZajnZ45X1q3JXglD+3vR8cwNhIMCGe2y0PQp:asZqZOXQ3uqvR2Kfzp
- TLSH T136029E05D7A20CC3D2016C71CD9EB2F5AB13A1DADA3926719C67D4C167072DE2CE620D
- MD5 SHA1 SHA512 SSDEEP TLSH
- Path C:\Windows\System32\CodeIntegrity\SiPolicy.p7b
- Size 24KB
- SHA256 b3f17065ed63b17ffef175f2979907d8eef69a76ba4cbd1d9785035a0b1f0a10
- MD5 c99441a9b83d3866d88abfdf45894d3d
- SHA1 3e32a4131855a8296b6238294a03d8eabcad6f9c
- SHA512 c13bb76ef20055b5e923272c4cd976e93e5f21c5b7f8664e5d60a4918e92d0ab4abd3efa63a549b52536986fc3434a9ef1f808be76a12f47e43fdd9e58f275f6
- SSDEEP 48:GwIn0NHUVyHU1yHUccy3GwaAvdV6dVwNdVojdVKdVqdmded9dod1d9Ud0dOdbd81:Any8yU88yldGVDP4NMC2/22M/0rw
- TLSH T11CB2C6803BEEC559F3B3DA71AFB6C6AA903AFC91AD11531F71C9735E1432800D529B62
- MD5 SHA1 SHA512 SSDEEP TLSH