Analysis

  • max time kernel
    128s
  • max time network
    113s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240802-en
  • resource tags

    arch:x64arch:x86image:win11-20240802-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    28/09/2024, 19:21

General

  • Target

    fontdrvhost.exe

  • Size

    904KB

  • MD5

    f41ddb7839baaf8afb9e06244cca63af

  • SHA1

    a28a821a6259a502291085e606c3d6695f76b77e

  • SHA256

    bb87be5fac469d9486bd959166ad1a879a361651450fef3ab4e23d89e387aac2

  • SHA512

    d9af2a8786067027b3e13200f2102c3df58db236c3aba1f2b2f6adbd4de49e867991120f1afac9642e9d647c5e2c3f5da121f19baf9ec11bc441a0fb5f001421

  • SSDEEP

    12288:gpM6njfvne5t4vVc5mbljYDuRm/e5t4vVc5mbljYDuRmg5t4vVc5mbljYDuRm4:unbAmmCsbAmmCKAmmC5

Score
4/10

Malware Config

Signatures

  • Drops file in Windows directory 4 IoCs
  • Program crash 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

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

  • Checks SCSI registry key(s) 3 TTPs 3 IoCs

    SCSI information is often read in order to detect sandboxing environments.

  • Checks processor information in registry 2 TTPs 2 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Opens file in notepad (likely ransom note) 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 33 IoCs
  • Suspicious use of AdjustPrivilegeToken 7 IoCs
  • Suspicious use of FindShellTrayWindow 59 IoCs
  • Suspicious use of SendNotifyMessage 59 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\fontdrvhost.exe
    "C:\Users\Admin\AppData\Local\Temp\fontdrvhost.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    PID:4616
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4616 -s 1088
      2⤵
      • Program crash
      PID:4608
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 4616 -ip 4616
    1⤵
      PID:384
    • C:\Windows\System32\rundll32.exe
      C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
      1⤵
        PID:2332
      • C:\Windows\system32\NOTEPAD.EXE
        "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\Desktop\TestProtect.txt
        1⤵
        • Opens file in notepad (likely ransom note)
        PID:4092
      • C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\MiniSearchHost.exe
        "C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\MiniSearchHost.exe" -ServerName:MiniSearchUI.AppXj3y73at8fy1htwztzxs68sxx1v7cksp7.mca
        1⤵
        • Suspicious use of SetWindowsHookEx
        PID:3616
      • C:\Windows\system32\svchost.exe
        C:\Windows\system32\svchost.exe -k LocalService -p -s NPSMSvc
        1⤵
          PID:776
        • C:\Windows\System32\oobe\UserOOBEBroker.exe
          C:\Windows\System32\oobe\UserOOBEBroker.exe -Embedding
          1⤵
          • Drops file in Windows directory
          PID:1848
        • C:\Users\Admin\AppData\Local\Microsoft\OneDrive\18.151.0729.0013\FileCoAuth.exe
          C:\Users\Admin\AppData\Local\Microsoft\OneDrive\18.151.0729.0013\FileCoAuth.exe -Embedding
          1⤵
          • System Location Discovery: System Language Discovery
          PID:2132
        • C:\Users\Admin\AppData\Local\Microsoft\OneDrive\18.151.0729.0013\FileCoAuth.exe
          C:\Users\Admin\AppData\Local\Microsoft\OneDrive\18.151.0729.0013\FileCoAuth.exe -Embedding
          1⤵
          • System Location Discovery: System Language Discovery
          PID:1264
        • C:\Windows\system32\svchost.exe
          C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -p -s DisplayEnhancementService
          1⤵
            PID:3116
          • C:\Windows\system32\taskmgr.exe
            "C:\Windows\system32\taskmgr.exe" /0
            1⤵
            • Checks SCSI registry key(s)
            • Checks processor information in registry
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of FindShellTrayWindow
            • Suspicious use of SendNotifyMessage
            PID:1452

          Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

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          Downloads

          • C:\Users\Admin\AppData\Local\Microsoft\OneDrive\logs\Common\FileCoAuth-2024-9-28.1922.2132.1.odl

            Filesize

            706B

            MD5

            fcc3b62ba0485e297da5e5ff6779978d

            SHA1

            4976727f5962e036f4ed1a44c03757cb1efe0cce

            SHA256

            3fca3f9b915ed3a1573d6dc5a163c0717d6eaab899abcdebb6869d00fa605ced

            SHA512

            a3cbc334b9f3860e37a9785b5e5c2278a8032f5d2dd8ea9dc8096f11a7a6ca17758a36480f7dbedae4a6e11707a499d8965ae9e6e9a9d32bf704274b04adb3c0

          • memory/1452-27-0x0000021798A20000-0x0000021798A21000-memory.dmp

            Filesize

            4KB

          • memory/1452-24-0x0000021798A20000-0x0000021798A21000-memory.dmp

            Filesize

            4KB

          • memory/1452-26-0x0000021798A20000-0x0000021798A21000-memory.dmp

            Filesize

            4KB

          • memory/1452-21-0x0000021798A20000-0x0000021798A21000-memory.dmp

            Filesize

            4KB

          • memory/1452-22-0x0000021798A20000-0x0000021798A21000-memory.dmp

            Filesize

            4KB

          • memory/1452-23-0x0000021798A20000-0x0000021798A21000-memory.dmp

            Filesize

            4KB

          • memory/1452-17-0x0000021798A20000-0x0000021798A21000-memory.dmp

            Filesize

            4KB

          • memory/1452-25-0x0000021798A20000-0x0000021798A21000-memory.dmp

            Filesize

            4KB

          • memory/1452-16-0x0000021798A20000-0x0000021798A21000-memory.dmp

            Filesize

            4KB

          • memory/1452-15-0x0000021798A20000-0x0000021798A21000-memory.dmp

            Filesize

            4KB

          • memory/4616-2-0x0000000005410000-0x00000000059B6000-memory.dmp

            Filesize

            5.6MB

          • memory/4616-0-0x0000000074D2E000-0x0000000074D2F000-memory.dmp

            Filesize

            4KB

          • memory/4616-1-0x00000000003B0000-0x0000000000498000-memory.dmp

            Filesize

            928KB

          • memory/4616-7-0x0000000074D20000-0x00000000754D1000-memory.dmp

            Filesize

            7.7MB

          • memory/4616-6-0x0000000074D20000-0x00000000754D1000-memory.dmp

            Filesize

            7.7MB

          • memory/4616-5-0x0000000005120000-0x000000000512A000-memory.dmp

            Filesize

            40KB

          • memory/4616-4-0x0000000004F10000-0x0000000004F22000-memory.dmp

            Filesize

            72KB

          • memory/4616-3-0x0000000004F40000-0x0000000004FD2000-memory.dmp

            Filesize

            584KB