Analysis

  • max time kernel
    93s
  • max time network
    123s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    27-04-2024 05:36

General

  • Target

    2024-04-27_d0cf727c46e2ee5dbf57063d3ae85dfd_destroyer_wannacry.exe

  • Size

    22KB

  • MD5

    d0cf727c46e2ee5dbf57063d3ae85dfd

  • SHA1

    e5fab1e8a3954970331f415e5bcb7cdc2ad678d3

  • SHA256

    93e27f3c219edee9e18c570fc1b36c0fae0e3b06cbbe85bd9afb4fe7d11d03ea

  • SHA512

    da7b19ec144f69594d66b46c5e24adeccbd4bd2d13bc04be4030f4464978f2d8263dcfffe9392d684ecd5d918366d5c6236e39a9d47be18e4b166091448fc326

  • SSDEEP

    384:p3MLWHn3kITf5o1CWpW23+rJVr91CrNveg:Jn3kIhWpW2CVr9Sxeg

Malware Config

Signatures

  • Chaos

    Ransomware family first seen in June 2021.

  • Chaos Ransomware 2 IoCs
  • Deletes shadow copies 2 TTPs

    Ransomware often targets backup files to inhibit system recovery.

  • Detects command variations typically used by ransomware 2 IoCs
  • Modifies boot configuration data using bcdedit 1 TTPs 2 IoCs
  • Deletes backup catalog 3 TTPs 1 IoCs

    Uses wbadmin.exe to inhibit system recovery.

  • Checks computer location settings 2 TTPs 2 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Drops startup file 3 IoCs
  • Executes dropped EXE 1 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Drops desktop.ini file(s) 34 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Checks SCSI registry key(s) 3 TTPs 4 IoCs

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

  • Interacts with shadow copies 2 TTPs 1 IoCs

    Shadow copies are often targeted by ransomware to inhibit system recovery.

  • Modifies registry class 2 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 39 IoCs
  • Suspicious use of AdjustPrivilegeToken 50 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 18 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

  • Uses Volume Shadow Copy service COM API

    The Volume Shadow Copy service is used to manage backups/snapshots.

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-04-27_d0cf727c46e2ee5dbf57063d3ae85dfd_destroyer_wannacry.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-04-27_d0cf727c46e2ee5dbf57063d3ae85dfd_destroyer_wannacry.exe"
    1⤵
    • Checks computer location settings
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4364
    • C:\Users\Admin\AppData\Roaming\svchost.exe
      "C:\Users\Admin\AppData\Roaming\svchost.exe"
      2⤵
      • Checks computer location settings
      • Drops startup file
      • Executes dropped EXE
      • Drops desktop.ini file(s)
      • Modifies registry class
      • Suspicious behavior: AddClipboardFormatListener
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2972
      • C:\Windows\System32\cmd.exe
        "C:\Windows\System32\cmd.exe" /C vssadmin delete shadows /all /quiet & wmic shadowcopy delete
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:4664
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          4⤵
          • Interacts with shadow copies
          PID:4848
        • C:\Windows\System32\Wbem\WMIC.exe
          wmic shadowcopy delete
          4⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:5080
      • C:\Windows\System32\cmd.exe
        "C:\Windows\System32\cmd.exe" /C bcdedit /set {default} bootstatuspolicy ignoreallfailures & bcdedit /set {default} recoveryenabled no
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:4236
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} bootstatuspolicy ignoreallfailures
          4⤵
          • Modifies boot configuration data using bcdedit
          PID:3524
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} recoveryenabled no
          4⤵
          • Modifies boot configuration data using bcdedit
          PID:3412
      • C:\Windows\System32\cmd.exe
        "C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:4552
        • C:\Windows\system32\wbadmin.exe
          wbadmin delete catalog -quiet
          4⤵
          • Deletes backup catalog
          PID:4244
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:3864
  • C:\Windows\system32\wbengine.exe
    "C:\Windows\system32\wbengine.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:4248
  • C:\Windows\System32\vdsldr.exe
    C:\Windows\System32\vdsldr.exe -Embedding
    1⤵
      PID:2912
    • C:\Windows\System32\vds.exe
      C:\Windows\System32\vds.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:3744
    • C:\Windows\system32\OpenWith.exe
      C:\Windows\system32\OpenWith.exe -Embedding
      1⤵
      • Modifies registry class
      • Suspicious use of SetWindowsHookEx
      PID:2476

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Roaming\svchost.exe

      Filesize

      22KB

      MD5

      d0cf727c46e2ee5dbf57063d3ae85dfd

      SHA1

      e5fab1e8a3954970331f415e5bcb7cdc2ad678d3

      SHA256

      93e27f3c219edee9e18c570fc1b36c0fae0e3b06cbbe85bd9afb4fe7d11d03ea

      SHA512

      da7b19ec144f69594d66b46c5e24adeccbd4bd2d13bc04be4030f4464978f2d8263dcfffe9392d684ecd5d918366d5c6236e39a9d47be18e4b166091448fc326

    • C:\Users\Admin\Desktop\Wifi_pass_wire

      Filesize

      605B

      MD5

      a411951ff9b7937383e1b22fb21933a1

      SHA1

      77e1ecf2a0b716a8a662a9f51be8db019acc3130

      SHA256

      669cdc2df83b48699813a1087c2662f0449f1a27d9a214e8a688435bfb3c4f93

      SHA512

      cc04656f91185ec8be78479554fdc0f5de2e8302c0a5023aa80814c692e8d85b7ed969300ffe872be230391248e2ca756c6bf769a3f520b68826b4c1ca1e6754

    • memory/2972-15-0x00007FFF47190000-0x00007FFF47C51000-memory.dmp

      Filesize

      10.8MB

    • memory/2972-76-0x00007FFF47190000-0x00007FFF47C51000-memory.dmp

      Filesize

      10.8MB

    • memory/4364-0-0x0000000000560000-0x000000000056C000-memory.dmp

      Filesize

      48KB

    • memory/4364-1-0x00007FFF47190000-0x00007FFF47C51000-memory.dmp

      Filesize

      10.8MB

    • memory/4364-14-0x00007FFF47190000-0x00007FFF47C51000-memory.dmp

      Filesize

      10.8MB