Analysis

  • max time kernel
    62s
  • max time network
    63s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    19/09/2024, 02:56

Errors

Reason
Machine shutdown

General

  • Target
    94ca78853c2b4a62bdf3127c0671e785.exe
  • Size 3.8MB
  • Sample240919-dfdfnsxdpa
  • SHA256 9a2bebd5496cc0040f2377110ad4ca3c74427790d937dbc34a671a19d6293ba0
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • Modifies WinLogon for persistence 2 TTPs 1 IoCs
  • Boot or Logon Autostart Execution: Active Setup 2 TTPs 1 IoCs

    Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.

  • Disables RegEdit via registry modification 1 IoCs
  • Disables Task Manager via registry modification
  • Event Triggered Execution: Image File Execution Options Injection 1 TTPs 10 IoCs
  • Checks computer location settings 2 TTPs 3 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 1 IoCs
  • UPX packed file 5 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Adds Run key to start application 2 TTPs 2 IoCs
  • Modifies WinLogon 2 TTPs 1 IoCs
  • Writes to the Master Boot Record (MBR) 1 TTPs 2 IoCs

    Bootkits write to the MBR to gain persistence at a level below the operating system.

  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • System Location Discovery: System Language Discovery 1 TTPs 12 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Kills process with taskkill 2 IoCs
  • Modifies registry class 3 IoCs
  • Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 6 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of SendNotifyMessage 2 IoCs
  • Suspicious use of WriteProcessMemory 33 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\94ca78853c2b4a62bdf3127c0671e785.exe
    "C:\Users\Admin\AppData\Local\Temp\94ca78853c2b4a62bdf3127c0671e785.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2700
    • C:\Users\Admin\AppData\Local\Temp\RarSFX0\Tropinks.exe
      "C:\Users\Admin\AppData\Local\Temp\RarSFX0\Tropinks.exe"
      2⤵
      • Modifies WinLogon for persistence
      • Checks computer location settings
      • Executes dropped EXE
      • Loads dropped DLL
      • Modifies WinLogon
      • System Location Discovery: System Language Discovery
      • Modifies registry class
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:1752
      • C:\Users\Admin\AppData\Local\Temp\RarSFX0\system2.exe
        "C:\Users\Admin\AppData\Local\Temp\RarSFX0\system2.exe"
        3⤵
        • Executes dropped EXE
        • Adds Run key to start application
        • Writes to the Master Boot Record (MBR)
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:3476
        • C:\Windows\SysWOW64\schtasks.exe
          schtasks.exe /Create /TN "Windows Update" /ru SYSTEM /SC ONSTART /TR "C:\Users\Admin\AppData\Local\Temp\RarSFX0\system2.exe"
          4⤵
          • System Location Discovery: System Language Discovery
          • Scheduled Task/Job: Scheduled Task
          PID:3284
      • C:\Users\Admin\AppData\Local\Temp\RarSFX0\system2.exe
        "C:\Users\Admin\AppData\Local\Temp\RarSFX0\system2.exe"
        3⤵
        • Executes dropped EXE
        • Adds Run key to start application
        • Writes to the Master Boot Record (MBR)
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:1412
        • C:\Windows\SysWOW64\schtasks.exe
          schtasks.exe /Create /TN "Windows Update" /ru SYSTEM /SC ONSTART /TR "C:\Users\Admin\AppData\Local\Temp\RarSFX0\system2.exe"
          4⤵
          • System Location Discovery: System Language Discovery
          • Scheduled Task/Job: Scheduled Task
          PID:5076
      • C:\Windows\SysWOW64\WScript.exe
        "C:\Windows\System32\WScript.exe" "C:\HOOK.vbs"
        3⤵
        • Checks computer location settings
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:3364
        • C:\Windows\SysWOW64\wscript.exe
          "C:\Windows\System32\wscript.exe" "C:\HOOK.vbs" /elevated
          4⤵
          • Disables RegEdit via registry modification
          • Event Triggered Execution: Image File Execution Options Injection
          • System Location Discovery: System Language Discovery
          PID:1740
      • C:\Windows\SysWOW64\cmd.exe
        cmd.exe /c "TASKKILL /F /IM cssrs.exe"
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:2896
        • C:\Windows\SysWOW64\taskkill.exe
          TASKKILL /F /IM cssrs.exe
          4⤵
          • System Location Discovery: System Language Discovery
          • Kills process with taskkill
          • Suspicious use of AdjustPrivilegeToken
          PID:3136
      • C:\Windows\SysWOW64\cmd.exe
        cmd.exe /c "TASKKILL /F /IM svchost.exe"
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:1800
        • C:\Windows\SysWOW64\taskkill.exe
          TASKKILL /F /IM svchost.exe
          4⤵
          • System Location Discovery: System Language Discovery
          • Kills process with taskkill
          • Suspicious use of AdjustPrivilegeToken
          PID:4296
  • C:\Windows\explorer.exe
    explorer.exe
    1⤵
    • Boot or Logon Autostart Execution: Active Setup
    • Modifies registry class
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    PID:1584

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        HOOK.vbs

        • Path C:\HOOK.vbs
        • Size 1KB
        • SHA256 c8cd30241004443adc2e06e04372a14690cea3a247bb6ae4b17c8fe73379856b
        • MD5 SHA1 SHA512

        Tropinks.exe

        • Path C:\Users\Admin\AppData\Local\Temp\RarSFX0\Tropinks.exe
        • Size 7.7MB
        • SHA256 19ad984a348d6db749fbcc1cee14811c5651e4906130981599c19f715a892944
        • MD5 SHA1 SHA512 SSDEEP

        system2.exe

        • Path C:\Users\Admin\AppData\Local\Temp\RarSFX0\system2.exe
        • Size 101KB
        • SHA256 5791e000c06c8d95d403a143c6a54087cfc1ef51380814a5f5d936a54234c2ee
        • MD5 SHA1 SHA512 SSDEEP

        evbD85F.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\evbD85F.tmp
        • Size 1KB
        • SHA256 3738a17c1e396e1da288ebb3994d5c79884d946a3f07af67073b309ada2045f7
        • MD5 SHA1 SHA512

        memory/1412-33-0x0000000000400000-0x0000000000423000-memory.dmp

        memory/1752-17-0x0000000002E00000-0x0000000002E01000-memory.dmp

        memory/1752-22-0x0000000010000000-0x00000000106A5000-memory.dmp

        memory/1752-27-0x0000000010000000-0x00000000106A5000-memory.dmp

        memory/1752-14-0x0000000000400000-0x0000000000697000-memory.dmp

        memory/1752-15-0x0000000077882000-0x0000000077883000-memory.dmp

        memory/1752-16-0x0000000077883000-0x0000000077884000-memory.dmp

        memory/1752-37-0x0000000000400000-0x0000000000697000-memory.dmp

        memory/1752-38-0x0000000002E00000-0x0000000002E01000-memory.dmp

        memory/1752-39-0x0000000000400000-0x0000000000697000-memory.dmp

        memory/1752-41-0x0000000010000000-0x00000000106A5000-memory.dmp

        memory/1752-46-0x0000000000400000-0x0000000000697000-memory.dmp

        memory/3476-32-0x0000000000400000-0x0000000000423000-memory.dmp