Analysis
- max time kernel
149s - max time network
96s - platform
windows11-21h2_x64 - resource
win11-20260130-en - resource tags
- submitted
03/05/2026, 19:25
General
- Target $R0/Uninstall Blockyfish.exe
- Size 268KB
- Sample260503-x451daf141
- SHA256 f7e0e41648179787aaaee1dad3367d9b913f1f114ae8fd70c8568e3efa2c6477
Malware Config
Signatures
- 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 Blockyfish.exe"C:\Users\Admin\AppData\Local\Temp\$R0\Uninstall Blockyfish.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⤵
- 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\Blockyfish', '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_0hyv45uk.3c0.ps1
StdUtils.dll
System.dll
UAC.dll
WinShell.dll
modern-wizard.bmp
nsDialogs.dll
nsExec.dll
Un_A.exe
memory/940-96-0x0000000005FA0000-0x00000000062F7000-memory.dmp
memory/940-107-0x0000000004F50000-0x0000000004FD2000-memory.dmp
memory/940-105-0x00000000704B0000-0x0000000070807000-memory.dmp
memory/940-98-0x0000000070330000-0x000000007037C000-memory.dmp
memory/2488-86-0x00000000046F0000-0x0000000004772000-memory.dmp
memory/2488-84-0x0000000007130000-0x0000000007141000-memory.dmp
memory/2488-83-0x00000000071C0000-0x0000000007256000-memory.dmp
memory/2488-76-0x0000000070330000-0x000000007037C000-memory.dmp
memory/4972-127-0x0000000000B80000-0x0000000000C92000-memory.dmp
memory/4972-135-0x0000000000B80000-0x0000000000C92000-memory.dmp
memory/4972-27-0x0000000000B80000-0x0000000000C92000-memory.dmp
memory/5000-4-0x0000000000D10000-0x0000000000E22000-memory.dmp
memory/6088-34-0x0000000004F30000-0x0000000004F52000-memory.dmp
memory/6088-60-0x0000000007270000-0x0000000007294000-memory.dmp
memory/6088-61-0x0000000070490000-0x00000000707E7000-memory.dmp
memory/6088-64-0x0000000004850000-0x00000000048D2000-memory.dmp
memory/6088-59-0x0000000007240000-0x000000000726A000-memory.dmp
memory/6088-58-0x00000000070B0000-0x00000000070BA000-memory.dmp
memory/6088-57-0x0000000007030000-0x000000000704A000-memory.dmp
memory/6088-56-0x0000000007670000-0x0000000007CEA000-memory.dmp
memory/6088-55-0x0000000006EE0000-0x0000000006F84000-memory.dmp
memory/6088-47-0x0000000070330000-0x000000007037C000-memory.dmp
memory/6088-54-0x0000000006EB0000-0x0000000006ECE000-memory.dmp
memory/6088-46-0x00000000062A0000-0x00000000062D4000-memory.dmp
memory/6088-45-0x0000000005D00000-0x0000000005D4C000-memory.dmp
memory/6088-44-0x0000000005CC0000-0x0000000005CDE000-memory.dmp
memory/6088-43-0x00000000057F0000-0x0000000005B47000-memory.dmp
memory/6088-36-0x0000000005780000-0x00000000057E6000-memory.dmp
memory/6088-35-0x0000000005710000-0x0000000005776000-memory.dmp
memory/6088-33-0x0000000004FB0000-0x00000000055DA000-memory.dmp
memory/6088-32-0x0000000002760000-0x0000000002796000-memory.dmp