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Analysis

  • max time kernel
    119s
  • max time network
    120s
  • platform
    windows7_x64
  • resource
    win7-20231129-en
  • resource tags

    arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
  • submitted
    25/12/2023, 01:22

General

  • Target

    2022a4f1ab3229944bac054c1fd5dce0.exe

  • Size

    322KB

  • MD5

    2022a4f1ab3229944bac054c1fd5dce0

  • SHA1

    02141861dcf9776b7be213bdb63fcf3c0bc30104

  • SHA256

    cff40a13d5f166ef5ffb35d7e245eb5817acc8fcbfc11caf0aac9806b1443a5f

  • SHA512

    febe8fb7f29a4ca7fbd868601453c111a1a7edb5a882afe1be86a3a2086d965bdb7bbbfcf93f363523f056fd207ba9e05d3e8502fb4db88a65f8d5a742d1f079

  • SSDEEP

    6144:MQDqT0nxuh1zu1pXs+1GHNkVsuaRaU6mHGjDi:rDvwh1zu1pXs+1Gt0aRz6mHGjDi

Score
10/10

Malware Config

Signatures

  • Modifies WinLogon for persistence 2 TTPs 1 IoCs
  • Modifies Windows Firewall 1 TTPs 1 IoCs
  • Sets file to hidden 1 TTPs 1 IoCs

    Modifies file attributes to stop it showing in Explorer etc.

  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 7 IoCs
  • UPX packed file 4 IoCs

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

  • Adds Run key to start application 2 TTPs 2 IoCs
  • Drops file in System32 directory 2 IoCs
  • Drops file in Windows directory 2 IoCs
  • Modifies registry class 64 IoCs
  • Suspicious use of SetWindowsHookEx 4 IoCs
  • Suspicious use of WriteProcessMemory 35 IoCs
  • Views/modifies file attributes 1 TTPs 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2022a4f1ab3229944bac054c1fd5dce0.exe
    "C:\Users\Admin\AppData\Local\Temp\2022a4f1ab3229944bac054c1fd5dce0.exe"
    1⤵
    • Modifies WinLogon for persistence
    • Loads dropped DLL
    • Adds Run key to start application
    • Drops file in System32 directory
    • Drops file in Windows directory
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2040
    • C:\Windows\SysWOW64\attrib.exe
      attrib +S +H C:\Windows\system32\MSWINSCK.OCX
      2⤵
      • Sets file to hidden
      • Drops file in System32 directory
      • Views/modifies file attributes
      PID:3024
    • C:\Windows\SysWOW64\regsvr32.exe
      regsvr32 /s C:\Windows\system32\MSWINSCK.OCX
      2⤵
      • Loads dropped DLL
      • Modifies registry class
      PID:2924
    • C:\WINDOWS\Cursors\lsass.exe
      C:\WINDOWS\Cursors\lsass.exe
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Adds Run key to start application
      • Suspicious use of SetWindowsHookEx
      PID:2608
    • C:\Windows\SysWOW64\attrib.exe
      attrib +h C:\WINDOWS\Cursors\lsass.exe
      2⤵
      • Drops file in Windows directory
      • Views/modifies file attributes
      PID:2572
    • C:\Windows\SysWOW64\netsh.exe
      netsh firewall add allowedprogram program =C:\WINDOWS\Cursors\lsass.exename = WinUpdate = ENABLE
      2⤵
      • Modifies Windows Firewall
      PID:2864

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • memory/2040-0-0x0000000000400000-0x0000000000452000-memory.dmp

    Filesize

    328KB

  • memory/2040-1-0x0000000000230000-0x0000000000282000-memory.dmp

    Filesize

    328KB

  • memory/2040-24-0x0000000000400000-0x0000000000452000-memory.dmp

    Filesize

    328KB

  • memory/2040-14-0x0000000002FE0000-0x0000000003032000-memory.dmp

    Filesize

    328KB

  • memory/2608-15-0x0000000000400000-0x0000000000452000-memory.dmp

    Filesize

    328KB

  • memory/2608-25-0x0000000000400000-0x0000000000452000-memory.dmp

    Filesize

    328KB