Analysis

  • max time kernel
    157s
  • max time network
    172s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    06/11/2022, 14:38

General

  • Target

    0b17c6b04b3377e3330bed6100ce5cf04a21006b6e4c235aa9284852e3ff7b23.exe

  • Size

    945KB

  • MD5

    06822d85a389ec337ccb29473d67a34d

  • SHA1

    421e6e053e161710e8cfe5f948b5675d69dcd463

  • SHA256

    0b17c6b04b3377e3330bed6100ce5cf04a21006b6e4c235aa9284852e3ff7b23

  • SHA512

    d568e1a5c1d6696f34435139f878fc28dce92d551446750e1a89385661f549b35588f5066d9199662de36a3b1ac16f74bababc6074df4a25434c9daf3d303d7b

  • SSDEEP

    24576:thShyAUhcg4nig/fTPu202NzhaZ/Bn44xVdS1S1QIe6Z:mlDjjTzhaZ/Bn4wVdeoPR

Malware Config

Signatures

  • Executes dropped EXE 1 IoCs
  • UPX packed file 3 IoCs

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

  • Adds Run key to start application 2 TTPs 2 IoCs
  • Enumerates connected drives 3 TTPs 22 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Writes to the Master Boot Record (MBR) 1 TTPs 1 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). Likely ransomware behaviour.

  • Program crash 1 IoCs
  • Checks processor information in registry 2 TTPs 3 IoCs

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

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Modifies data under HKEY_USERS 64 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of FindShellTrayWindow 27 IoCs
  • Suspicious use of SendNotifyMessage 21 IoCs
  • Suspicious use of SetWindowsHookEx 4 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\0b17c6b04b3377e3330bed6100ce5cf04a21006b6e4c235aa9284852e3ff7b23.exe
    "C:\Users\Admin\AppData\Local\Temp\0b17c6b04b3377e3330bed6100ce5cf04a21006b6e4c235aa9284852e3ff7b23.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:1364
    • C:\ProgramData\defender.exe
      C:\ProgramData\defender.exe
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      • Enumerates connected drives
      • Writes to the Master Boot Record (MBR)
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      • Suspicious use of SetWindowsHookEx
      PID:4808
  • C:\Windows\system32\sihost.exe
    sihost.exe
    1⤵
    • Suspicious use of FindShellTrayWindow
    PID:1812
  • C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe
    "C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe" /service
    1⤵
    • Modifies data under HKEY_USERS
    • Suspicious use of SetWindowsHookEx
    PID:3420
  • C:\Windows\system32\sihost.exe
    sihost.exe
    1⤵
    • Suspicious use of FindShellTrayWindow
    PID:2804
  • C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe
    "C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe" /service
    1⤵
    • Checks processor information in registry
    • Enumerates system info in registry
    • Modifies data under HKEY_USERS
    • Suspicious use of SetWindowsHookEx
    PID:5036
  • C:\Windows\system32\sihost.exe
    sihost.exe
    1⤵
    • Suspicious use of FindShellTrayWindow
    PID:3972
  • C:\Windows\system32\sihost.exe
    sihost.exe
    1⤵
    • Suspicious use of FindShellTrayWindow
    PID:1372
  • C:\Windows\system32\sihost.exe
    sihost.exe
    1⤵
    • Suspicious use of FindShellTrayWindow
    PID:4128
  • C:\Windows\system32\sihost.exe
    sihost.exe
    1⤵
    • Suspicious use of FindShellTrayWindow
    PID:4928
  • C:\Windows\system32\WerFault.exe
    C:\Windows\system32\WerFault.exe -pss -s 184 -p 2456 -ip 2456
    1⤵
      PID:1432
    • C:\Windows\system32\WerFault.exe
      C:\Windows\system32\WerFault.exe -u -p 2456 -s 3148
      1⤵
      • Program crash
      PID:1476

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

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    Downloads

    • C:\ProgramData\defender.exe

      Filesize

      863KB

      MD5

      8ec7aac042e59a766a21e96d4e6131d6

      SHA1

      87da0b65530f135ac4220908fea4824046b14585

      SHA256

      40ff4eb78f59932f1965ff4247f953a7a6bb4b818f2097e97a3aa3a619670555

      SHA512

      371cff0e981ae853821f7b9d2f9e4087607f423034a5f21699e6b60d0326f0c340dc601d181e186e09c881e6fe404fda4fe4fb3ffa59fb3e47685fbc4579a44e

    • C:\ProgramData\defender.exe

      Filesize

      863KB

      MD5

      8ec7aac042e59a766a21e96d4e6131d6

      SHA1

      87da0b65530f135ac4220908fea4824046b14585

      SHA256

      40ff4eb78f59932f1965ff4247f953a7a6bb4b818f2097e97a3aa3a619670555

      SHA512

      371cff0e981ae853821f7b9d2f9e4087607f423034a5f21699e6b60d0326f0c340dc601d181e186e09c881e6fe404fda4fe4fb3ffa59fb3e47685fbc4579a44e

    • memory/1364-132-0x0000000000400000-0x00000000006EF000-memory.dmp

      Filesize

      2.9MB

    • memory/1364-133-0x0000000000400000-0x00000000006EF000-memory.dmp

      Filesize

      2.9MB

    • memory/1364-134-0x0000000000BA0000-0x0000000000BA4000-memory.dmp

      Filesize

      16KB

    • memory/1364-143-0x0000000000400000-0x00000000006EF000-memory.dmp

      Filesize

      2.9MB

    • memory/4808-138-0x0000000000400000-0x0000000000A30000-memory.dmp

      Filesize

      6.2MB

    • memory/4808-140-0x0000000000400000-0x0000000000A30000-memory.dmp

      Filesize

      6.2MB

    • memory/4808-141-0x0000000000FF0000-0x0000000000FF4000-memory.dmp

      Filesize

      16KB

    • memory/4808-142-0x0000000000400000-0x0000000000A30000-memory.dmp

      Filesize

      6.2MB

    • memory/4808-144-0x0000000000400000-0x0000000000A30000-memory.dmp

      Filesize

      6.2MB

    • memory/4808-145-0x0000000000400000-0x0000000000A30000-memory.dmp

      Filesize

      6.2MB