Analysis

  • max time kernel
    121s
  • max time network
    122s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-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 3 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
  • 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 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Interacts with shadow copies 3 TTPs 1 IoCs

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

  • Opens file in notepad (likely ransom note) 1 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 48 IoCs
  • Suspicious use of WriteProcessMemory 30 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⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1260
    • C:\Users\Admin\AppData\Roaming\windows.exe
      "C:\Users\Admin\AppData\Roaming\windows.exe"
      2⤵
      • Drops startup file
      • Executes dropped EXE
      • Adds Run key to start application
      • Drops desktop.ini file(s)
      • Sets desktop wallpaper using registry
      • Suspicious behavior: AddClipboardFormatListener
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2352
      • 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:2700
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          4⤵
          • Interacts with shadow copies
          PID:2824
        • C:\Windows\System32\Wbem\WMIC.exe
          wmic shadowcopy delete
          4⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:2660
      • 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:2080
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} bootstatuspolicy ignoreallfailures
          4⤵
          • Modifies boot configuration data using bcdedit
          PID:1920
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} recoveryenabled no
          4⤵
          • Modifies boot configuration data using bcdedit
          PID:1424
      • C:\Windows\System32\cmd.exe
        "C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:1308
        • C:\Windows\system32\wbadmin.exe
          wbadmin delete catalog -quiet
          4⤵
          • Deletes backup catalog
          PID:1792
      • 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:1268
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:2856
  • C:\Windows\system32\wbengine.exe
    "C:\Windows\system32\wbengine.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:1264
  • C:\Windows\System32\vdsldr.exe
    C:\Windows\System32\vdsldr.exe -Embedding
    1⤵
      PID:552
    • C:\Windows\System32\vds.exe
      C:\Windows\System32\vds.exe
      1⤵
        PID:576

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\ProgramData\Adobe\Updater6\read_it.txt

        Filesize

        309B

        MD5

        f2a85e16dbc04486b1e097f3d58431d5

        SHA1

        f4b8bc7ecc7a9a8b59e13a34c059711571802a35

        SHA256

        b2be952057abc3253753e2f17699a4e379c8e36cee27fc9b719deacaa7eb3024

        SHA512

        a2ff61e03a89a3c5fec45dddc8e97bab980567ce7e2563d8f40ed8c5db28b0d58833ecf30f3d677b5c02cbcd5548fde9cc0b2ba4df610fcda19410c4b17e0325

      • 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\Accessories\Notepad.lnk

        Filesize

        1B

        MD5

        d1457b72c3fb323a2671125aef3eab5d

        SHA1

        5bab61eb53176449e25c2c82f172b82cb13ffb9d

        SHA256

        8a8de823d5ed3e12746a62ef169bcf372be0ca44f0a1236abc35df05d96928e1

        SHA512

        ca63c07ad35d8c9fb0c92d6146759b122d4ec5d3f67ebe2f30ddb69f9e6c9fd3bf31a5e408b08f1d4d9cd68120cced9e57f010bef3cde97653fed5470da7d1a0

      • memory/1260-0-0x000007FEF6003000-0x000007FEF6004000-memory.dmp

        Filesize

        4KB

      • memory/1260-1-0x0000000000980000-0x0000000000992000-memory.dmp

        Filesize

        72KB

      • memory/1260-3-0x000007FEF6000000-0x000007FEF69EC000-memory.dmp

        Filesize

        9.9MB

      • memory/1260-11-0x000007FEF6000000-0x000007FEF69EC000-memory.dmp

        Filesize

        9.9MB

      • memory/2352-8-0x0000000000A80000-0x0000000000A92000-memory.dmp

        Filesize

        72KB

      • memory/2352-9-0x000007FEF6000000-0x000007FEF69EC000-memory.dmp

        Filesize

        9.9MB

      • memory/2352-10-0x000007FEF6000000-0x000007FEF69EC000-memory.dmp

        Filesize

        9.9MB

      • memory/2352-1013-0x000007FEF6000000-0x000007FEF69EC000-memory.dmp

        Filesize

        9.9MB