Analysis

  • max time kernel
    93s
  • max time network
    94s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    03-09-2024 22:21

General

  • Target

    2024-09-03_9fa3de73d8740381fe07165858125a3c_destroyer_wannacry.exe

  • Size

    45KB

  • MD5

    9fa3de73d8740381fe07165858125a3c

  • SHA1

    8800ac9ba4db3f272e0107b5aa290385e3209aa0

  • SHA256

    2283242fda9f7bd1a4e8b4fd72e20c5fb3d13a2ebce8832b380441be4a8a2cdb

  • SHA512

    03fcfd96668f3b6b5dc091552a72bfd2c2ef0a44b7727bec296e8783bbece7add42f09356b7d1fdc6e62baa419cb595f913a94e200ac1afb3feafaa4f6ad223c

  • SSDEEP

    768:M7zxAmfwchrEgXYwIho9BwJct3wwExBvWcH1/527Iv+YGA82C:MN1/owIq9BwJ60/HH1h/Gbf

Malware Config

Signatures

  • Chaos

    Ransomware family first seen in June 2021.

  • Chaos Ransomware 2 IoCs
  • Deletes shadow copies 3 TTPs

    Ransomware often targets backup files to inhibit system recovery.

  • Modifies boot configuration data using bcdedit 1 TTPs 2 IoCs
  • Deletes backup catalog 3 TTPs 1 IoCs

    Uses wbadmin.exe to inhibit system recovery.

  • Disables Task Manager via registry modification
  • Checks computer location settings 2 TTPs 2 IoCs

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

  • Drops startup file 2 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.

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Drops desktop.ini file(s) 64 IoCs
  • Sets desktop wallpaper using registry 2 TTPs 1 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 3 TTPs 1 IoCs

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

  • Modifies registry class 1 IoCs
  • Opens file in notepad (likely ransom note) 1 IoCs
  • Suspicious behavior: AddClipboardFormatListener 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 46 IoCs
  • Suspicious use of AdjustPrivilegeToken 50 IoCs
  • Suspicious use of WriteProcessMemory 20 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\2024-09-03_9fa3de73d8740381fe07165858125a3c_destroyer_wannacry.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-09-03_9fa3de73d8740381fe07165858125a3c_destroyer_wannacry.exe"
    1⤵
    • Checks computer location settings
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1060
    • C:\Users\Admin\AppData\Roaming\windows.exe
      "C:\Users\Admin\AppData\Roaming\windows.exe"
      2⤵
      • Checks computer location settings
      • Drops startup file
      • Executes dropped EXE
      • Adds Run key to start application
      • Drops desktop.ini file(s)
      • Sets desktop wallpaper using registry
      • Modifies registry class
      • Suspicious behavior: AddClipboardFormatListener
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1448
      • 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:2232
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          4⤵
          • Interacts with shadow copies
          PID:1848
        • C:\Windows\System32\Wbem\WMIC.exe
          wmic shadowcopy delete
          4⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:3896
      • 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:1608
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} bootstatuspolicy ignoreallfailures
          4⤵
          • Modifies boot configuration data using bcdedit
          PID:2848
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} recoveryenabled no
          4⤵
          • Modifies boot configuration data using bcdedit
          PID:3964
      • C:\Windows\System32\cmd.exe
        "C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:3696
        • C:\Windows\system32\wbadmin.exe
          wbadmin delete catalog -quiet
          4⤵
          • Deletes backup catalog
          PID:3076
      • C:\Windows\system32\NOTEPAD.EXE
        "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Roaming\read_it.txt
        3⤵
        • Opens file in notepad (likely ransom note)
        PID:3696
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:3128
  • C:\Windows\system32\wbengine.exe
    "C:\Windows\system32\wbengine.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:4196
  • C:\Windows\System32\vdsldr.exe
    C:\Windows\System32\vdsldr.exe -Embedding
    1⤵
      PID:1336
    • C:\Windows\System32\vds.exe
      C:\Windows\System32\vds.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:1136

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\ProgramData\Adobe\Setup\{AC76BA86-7AD7-1033-7B44-AC0F074E4100}\read_it.txt

      Filesize

      309B

      MD5

      f2a85e16dbc04486b1e097f3d58431d5

      SHA1

      f4b8bc7ecc7a9a8b59e13a34c059711571802a35

      SHA256

      b2be952057abc3253753e2f17699a4e379c8e36cee27fc9b719deacaa7eb3024

      SHA512

      a2ff61e03a89a3c5fec45dddc8e97bab980567ce7e2563d8f40ed8c5db28b0d58833ecf30f3d677b5c02cbcd5548fde9cc0b2ba4df610fcda19410c4b17e0325

    • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\2024-09-03_9fa3de73d8740381fe07165858125a3c_destroyer_wannacry.exe.log

      Filesize

      1KB

      MD5

      baf55b95da4a601229647f25dad12878

      SHA1

      abc16954ebfd213733c4493fc1910164d825cac8

      SHA256

      ee954c5d8156fd8890e582c716e5758ed9b33721258f10e758bdc31ccbcb1924

      SHA512

      24f502fedb1a305d0d7b08857ffc1db9b2359ff34e06d5748ecc84e35c985f29a20d9f0a533bea32d234ab37097ec0481620c63b14ac89b280e75e14d19fd545

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

      Filesize

      45KB

      MD5

      9fa3de73d8740381fe07165858125a3c

      SHA1

      8800ac9ba4db3f272e0107b5aa290385e3209aa0

      SHA256

      2283242fda9f7bd1a4e8b4fd72e20c5fb3d13a2ebce8832b380441be4a8a2cdb

      SHA512

      03fcfd96668f3b6b5dc091552a72bfd2c2ef0a44b7727bec296e8783bbece7add42f09356b7d1fdc6e62baa419cb595f913a94e200ac1afb3feafaa4f6ad223c

    • C:\Users\Default\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessibility\Magnify.lnk

      Filesize

      1B

      MD5

      d1457b72c3fb323a2671125aef3eab5d

      SHA1

      5bab61eb53176449e25c2c82f172b82cb13ffb9d

      SHA256

      8a8de823d5ed3e12746a62ef169bcf372be0ca44f0a1236abc35df05d96928e1

      SHA512

      ca63c07ad35d8c9fb0c92d6146759b122d4ec5d3f67ebe2f30ddb69f9e6c9fd3bf31a5e408b08f1d4d9cd68120cced9e57f010bef3cde97653fed5470da7d1a0

    • memory/1060-0-0x00007FFF79C83000-0x00007FFF79C85000-memory.dmp

      Filesize

      8KB

    • memory/1060-1-0x0000000000A90000-0x0000000000AA2000-memory.dmp

      Filesize

      72KB

    • memory/1060-2-0x00007FFF79C80000-0x00007FFF7A741000-memory.dmp

      Filesize

      10.8MB

    • memory/1060-15-0x00007FFF79C80000-0x00007FFF7A741000-memory.dmp

      Filesize

      10.8MB

    • memory/1448-16-0x00007FFF79C80000-0x00007FFF7A741000-memory.dmp

      Filesize

      10.8MB

    • memory/1448-17-0x00007FFF79C80000-0x00007FFF7A741000-memory.dmp

      Filesize

      10.8MB

    • memory/1448-1327-0x00007FFF79C80000-0x00007FFF7A741000-memory.dmp

      Filesize

      10.8MB

    • memory/1448-1328-0x00007FFF79C80000-0x00007FFF7A741000-memory.dmp

      Filesize

      10.8MB