Analysis
- max time kernel
149s - max time network
156s - platform
windows10-ltsc_2021_x64 - resource
win10ltsc2021-20260513-en - resource tags
- submitted
10/09/2026, 15:28
General
- Target $R0/Uninstall STREAMUP.exe
- Size 177KB
- Sample260910-swj1qa1grd
- SHA256 65f0cef61014e654ba3a72e40c40b8c924a34c1a82bd6eff241d95af1761c5ac
Malware Config
Signatures
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Executes dropped EXE 1 IoCs
- Loads dropped DLL 13 IoCs
- Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs
Using powershell.exe command.
- Hide Artifacts: Ignore Process Interrupts 1 TTPs 1 IoCs
Command interpreters often include specific commands/flags that ignore errors and other hangups.
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- System Location Discovery: System Language Discovery 1 TTPs 5 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- Suspicious behavior: EnumeratesProcesses 8 IoCs
- Suspicious use of AdjustPrivilegeToken 24 IoCs
- Suspicious use of WriteProcessMemory 4 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\$R0\Uninstall STREAMUP.exe"C:\Users\Admin\AppData\Local\Temp\$R0\Uninstall STREAMUP.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\~nsuA.tmp\Un_A.exe"C:\Users\Admin\AppData\Local\Temp\~nsuA.tmp\Un_A.exe" _?=C:\Users\Admin\AppData\Local\Temp\$R0\2⤵
- Checks computer location settings
- Executes dropped EXE
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\system32\WindowsPowerShell\v1.0\powershell.exe" -C "if (Get-Command Get-CimInstance -ErrorAction SilentlyContinue) { exit 0 } else { exit 1 }"3⤵
- Hide Artifacts: Ignore Process Interrupts
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\system32\WindowsPowerShell\v1.0\powershell.exe" -C "if ((Get-ExecutionPolicy -Scope Process) -eq 'Restricted') { exit 1 } else { exit 0 }"3⤵
- Command and Scripting Interpreter: PowerShell
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\system32\WindowsPowerShell\v1.0\powershell.exe" -C "if ((Get-CimInstance -ClassName Win32_Process | ? {$_.Path -and $_.Path.StartsWith('C:\Users\Admin\AppData\Local\Programs\STREAMUP', 'CurrentCultureIgnoreCase')}).Count -gt 0) { exit 0 } else { exit 1 }"3⤵
- Command and Scripting Interpreter: PowerShell
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
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Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
powershell.exe.log
StartupProfileData-NonInteractive
StartupProfileData-NonInteractive
__PSScriptPolicyTest_d44zuv4j.4me.ps1
StdUtils.dll
System.dll
UAC.dll
WinShell.dll
modern-wizard.bmp
nsDialogs.dll
nsExec.dll
Un_A.exe
memory/2768-97-0x0000000070240000-0x000000007028C000-memory.dmp
memory/2768-105-0x00000000703A0000-0x00000000706F7000-memory.dmp
memory/4012-44-0x0000000070240000-0x000000007028C000-memory.dmp
memory/4012-58-0x0000000007C40000-0x0000000007C6A000-memory.dmp
memory/4012-42-0x000000007F2B0000-0x000000007F2C0000-memory.dmp
memory/4012-43-0x0000000006C50000-0x0000000006C82000-memory.dmp
memory/4012-40-0x0000000006650000-0x000000000666E000-memory.dmp
memory/4012-45-0x00000000052E0000-0x00000000052F0000-memory.dmp
memory/4012-53-0x0000000007670000-0x000000000768E000-memory.dmp
memory/4012-54-0x0000000007920000-0x00000000079C3000-memory.dmp
memory/4012-55-0x0000000008090000-0x000000000870A000-memory.dmp
memory/4012-56-0x0000000007A50000-0x0000000007A6A000-memory.dmp
memory/4012-57-0x0000000007AC0000-0x0000000007ACA000-memory.dmp
memory/4012-41-0x0000000006690000-0x00000000066DC000-memory.dmp
memory/4012-59-0x0000000007C70000-0x0000000007C94000-memory.dmp
memory/4012-60-0x00000000703A0000-0x00000000706F7000-memory.dmp
memory/4012-39-0x0000000006200000-0x0000000006557000-memory.dmp
memory/4012-31-0x0000000006090000-0x00000000060F6000-memory.dmp
memory/4012-26-0x00000000052E0000-0x00000000052F0000-memory.dmp
memory/4012-27-0x0000000003010000-0x0000000003046000-memory.dmp
memory/4012-28-0x00000000059C0000-0x000000000608A000-memory.dmp
memory/4012-30-0x00000000058C0000-0x0000000005926000-memory.dmp
memory/4012-29-0x0000000005720000-0x0000000005742000-memory.dmp
memory/4252-84-0x00000000078E0000-0x00000000078F1000-memory.dmp
memory/4252-83-0x0000000007980000-0x0000000007A16000-memory.dmp
memory/4252-75-0x0000000070240000-0x000000007028C000-memory.dmp