Analysis

  • max time kernel
    72s
  • max time network
    141s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    04/12/2022, 12:26

General

  • Target

    b29c825dae53a600e1a67b38800e4653cef13438e15777b8bdf74c5e9d085069.exe

  • Size

    846KB

  • MD5

    10a67df0d415eba48f26e274c01efd7d

  • SHA1

    5b005e2069f2f86f5d855695c8ae47def3dae5fc

  • SHA256

    b29c825dae53a600e1a67b38800e4653cef13438e15777b8bdf74c5e9d085069

  • SHA512

    56795c41a6b8f263594b0d68f542c973b4554a292d88d9e65f6a7e241cbe259b4e9d46d29a5fe3d7e0cda5719f0a96b57d3d1500489931e05d42f17918e2fe7e

  • SSDEEP

    24576:1X7RHmVwH+/w4c6mv2zbsTYuK0HJNsxxMHuN8d6pthv6bdmJav:fAO4c6yHcuK0HJNsX+uNyst5+d7

Score
6/10

Malware Config

Signatures

  • 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 23 IoCs
  • Suspicious use of SendNotifyMessage 17 IoCs
  • Suspicious use of SetWindowsHookEx 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b29c825dae53a600e1a67b38800e4653cef13438e15777b8bdf74c5e9d085069.exe
    "C:\Users\Admin\AppData\Local\Temp\b29c825dae53a600e1a67b38800e4653cef13438e15777b8bdf74c5e9d085069.exe"
    1⤵
    • 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:4736
  • C:\Windows\system32\sihost.exe
    sihost.exe
    1⤵
    • Suspicious use of FindShellTrayWindow
    PID:1572
  • 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:2084
  • C:\Windows\system32\sihost.exe
    sihost.exe
    1⤵
    • Suspicious use of FindShellTrayWindow
    PID:3840
  • 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:1344
  • C:\Windows\system32\sihost.exe
    sihost.exe
    1⤵
    • Suspicious use of FindShellTrayWindow
    PID:2672
  • C:\Windows\system32\sihost.exe
    sihost.exe
    1⤵
    • Suspicious use of FindShellTrayWindow
    PID:3584
  • C:\Windows\system32\sihost.exe
    sihost.exe
    1⤵
    • Suspicious use of FindShellTrayWindow
    PID:1404
  • C:\Windows\system32\sihost.exe
    sihost.exe
    1⤵
    • Suspicious use of FindShellTrayWindow
    PID:488
  • C:\Windows\system32\WerFault.exe
    C:\Windows\system32\WerFault.exe -pss -s 424 -p 2408 -ip 2408
    1⤵
      PID:4032
    • C:\Windows\system32\WerFault.exe
      C:\Windows\system32\WerFault.exe -u -p 2408 -s 1548
      1⤵
      • Program crash
      PID:2996

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

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    Downloads

    • memory/4736-132-0x0000000002960000-0x0000000002968000-memory.dmp

      Filesize

      32KB

    • memory/4736-133-0x0000000000400000-0x0000000000A1E000-memory.dmp

      Filesize

      6.1MB

    • memory/4736-135-0x0000000000400000-0x0000000000A1E000-memory.dmp

      Filesize

      6.1MB

    • memory/4736-136-0x0000000000400000-0x0000000000A1E000-memory.dmp

      Filesize

      6.1MB