Analysis

  • max time kernel
    150s
  • max time network
    80s
  • platform
    windows7_x64
  • resource
    win7v20210410
  • submitted
    13-05-2021 06:17

General

  • Target

    6a6ec0d82d0d124e65e4a0cd9c7262e51def7dfb4ed43398a41d1ec3508cee88.exe

  • Size

    343KB

  • MD5

    6cf1ef6ae9f35d89efbae669e3fa59cf

  • SHA1

    a19ce57386dae3750e7e326a024da77717047d7d

  • SHA256

    6a6ec0d82d0d124e65e4a0cd9c7262e51def7dfb4ed43398a41d1ec3508cee88

  • SHA512

    abd59863bae3c8342e1583adc5df2ad383b0b3273d18da52aba1b2dec815f2415fc2bd4ded90c18a5a16c37ba9d1defe86432457111fbf10b5b95ba0861824e7

Score
8/10

Malware Config

Signatures

  • Executes dropped EXE 3 IoCs
  • Suspicious Office macro 1 IoCs

    Office document equipped with 4.0 macros.

  • Loads dropped DLL 3 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Drops file in System32 directory 1 IoCs
  • Drops file in Windows directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Office loads VBA resources, possible macro or embedded object present
  • Modifies Internet Explorer settings 1 TTPs 9 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of FindShellTrayWindow 6 IoCs
  • Suspicious use of SendNotifyMessage 5 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs

Processes

  • C:\Windows\Explorer.EXE
    C:\Windows\Explorer.EXE
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: GetForegroundWindowSpam
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    PID:1220
    • C:\Users\Admin\AppData\Local\Temp\6a6ec0d82d0d124e65e4a0cd9c7262e51def7dfb4ed43398a41d1ec3508cee88.exe
      "C:\Users\Admin\AppData\Local\Temp\6a6ec0d82d0d124e65e4a0cd9c7262e51def7dfb4ed43398a41d1ec3508cee88.exe"
      2⤵
      • Loads dropped DLL
      • Adds Run key to start application
      • Drops file in System32 directory
      • Suspicious use of WriteProcessMemory
      PID:1616
      • C:\Users\Admin\AppData\Roaming\SndVkeng\cmdonce.exe
        "C:\Users\Admin\AppData\Roaming\SndVkeng\cmdonce.exe"
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of WriteProcessMemory
        PID:1464
        • C:\Users\Admin\AppData\Local\Temp\~251D.tmp
          "C:\Users\Admin\AppData\Local\Temp\~251D.tmp"
          4⤵
          • Executes dropped EXE
          • Suspicious use of WriteProcessMemory
          PID:1680
      • C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE
        "C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE" /n "C:\Users\Admin\AppData\Local\Temp\~258A.tmp.doc"
        3⤵
        • Drops file in Windows directory
        • Modifies Internet Explorer settings
        • Suspicious behavior: AddClipboardFormatListener
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:568
        • C:\Windows\splwow64.exe
          C:\Windows\splwow64.exe 12288
          4⤵
            PID:1932
    • C:\Windows\SysWOW64\ntprdown.exe
      C:\Windows\SysWOW64\ntprdown.exe -k
      1⤵
      • Executes dropped EXE
      • Suspicious behavior: EnumeratesProcesses
      PID:1684

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

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    Downloads

    • memory/568-83-0x000000005FFF0000-0x0000000060000000-memory.dmp

      Filesize

      64KB

    • memory/568-79-0x000000005FFF0000-0x0000000060000000-memory.dmp

      Filesize

      64KB

    • memory/568-78-0x000000006FE01000-0x000000006FE03000-memory.dmp

      Filesize

      8KB

    • memory/568-77-0x0000000072381000-0x0000000072384000-memory.dmp

      Filesize

      12KB

    • memory/1220-74-0x0000000003C90000-0x0000000003CD3000-memory.dmp

      Filesize

      268KB

    • memory/1464-73-0x00000000000E0000-0x0000000000120000-memory.dmp

      Filesize

      256KB

    • memory/1616-59-0x0000000075631000-0x0000000075633000-memory.dmp

      Filesize

      8KB

    • memory/1616-60-0x0000000000150000-0x00000000001B9000-memory.dmp

      Filesize

      420KB

    • memory/1684-75-0x0000000000310000-0x0000000000379000-memory.dmp

      Filesize

      420KB

    • memory/1932-82-0x000007FEFB881000-0x000007FEFB883000-memory.dmp

      Filesize

      8KB