Analysis

  • max time kernel
    150s
  • max time network
    156s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    24-10-2024 06:40

General

  • Target

    2024-10-24_646a228c774409c285c256a8faa49bde_wannacry.exe

  • Size

    779KB

  • MD5

    646a228c774409c285c256a8faa49bde

  • SHA1

    e8fd96815fa181b40e3b1597b817c9905df9da59

  • SHA256

    35f7fa926804c2a9a49b25d6709de2d018bc32333df2e51471a69c55cbf072a0

  • SHA512

    7f73a607602e06d8f3126a5fad88c0c7cc8ff58fed28e7840ca47ecf50f575c8d8b751441b4c7ac7aa48e65226c1219c7afa543db9f553bef1173330a3f64c13

  • SSDEEP

    12288:bCyAGey4UN8Pn55NRi9Q2i8xLmLCNWyReZsk0Clrbk68zn2fVCBLhjuxWhn8+klX:juy0cXzVRnjfioO5mX/

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 3 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 49 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\2024-10-24_646a228c774409c285c256a8faa49bde_wannacry.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-10-24_646a228c774409c285c256a8faa49bde_wannacry.exe"
    1⤵
    • Checks computer location settings
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3748
    • C:\Users\Admin\AppData\Roaming\twelve.exe
      "C:\Users\Admin\AppData\Roaming\twelve.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:4120
      • 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:4784
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          4⤵
          • Interacts with shadow copies
          PID:1732
        • C:\Windows\System32\Wbem\WMIC.exe
          wmic shadowcopy delete
          4⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:1108
      • 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:5060
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} bootstatuspolicy ignoreallfailures
          4⤵
          • Modifies boot configuration data using bcdedit
          PID:4068
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} recoveryenabled no
          4⤵
          • Modifies boot configuration data using bcdedit
          PID:3424
      • C:\Windows\System32\cmd.exe
        "C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:3380
        • C:\Windows\system32\wbadmin.exe
          wbadmin delete catalog -quiet
          4⤵
          • Deletes backup catalog
          PID:1820
      • C:\Windows\system32\NOTEPAD.EXE
        "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Roaming\Twelve.txt
        3⤵
        • Opens file in notepad (likely ransom note)
        PID:2316
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:60
  • C:\Windows\system32\wbengine.exe
    "C:\Windows\system32\wbengine.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:1064
  • C:\Windows\System32\vdsldr.exe
    C:\Windows\System32\vdsldr.exe -Embedding
    1⤵
      PID:444
    • C:\Windows\System32\vds.exe
      C:\Windows\System32\vds.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:1780

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\2024-10-24_646a228c774409c285c256a8faa49bde_wannacry.exe.log

      Filesize

      1KB

      MD5

      baf55b95da4a601229647f25dad12878

      SHA1

      abc16954ebfd213733c4493fc1910164d825cac8

      SHA256

      ee954c5d8156fd8890e582c716e5758ed9b33721258f10e758bdc31ccbcb1924

      SHA512

      24f502fedb1a305d0d7b08857ffc1db9b2359ff34e06d5748ecc84e35c985f29a20d9f0a533bea32d234ab37097ec0481620c63b14ac89b280e75e14d19fd545

    • C:\Users\Admin\AppData\Local\Twelve.txt

      Filesize

      38B

      MD5

      7afeb3bf9a9a994a6444958adf75bfff

      SHA1

      4fdf7442d158a752a174054ec8fa73c149968f17

      SHA256

      d69ff81bffe7a3f4d8e5374ffea18a5b22856dd85459ddfcd047b82943201f11

      SHA512

      1c3edca1046a167dcb33797375cfeab2b66985630e85e6cb14862c70aae3a0d8c067c94d1de772d46226ea391b8ca5b434951eba5cb50f6c92afddc5c051bdb0

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

      Filesize

      779KB

      MD5

      646a228c774409c285c256a8faa49bde

      SHA1

      e8fd96815fa181b40e3b1597b817c9905df9da59

      SHA256

      35f7fa926804c2a9a49b25d6709de2d018bc32333df2e51471a69c55cbf072a0

      SHA512

      7f73a607602e06d8f3126a5fad88c0c7cc8ff58fed28e7840ca47ecf50f575c8d8b751441b4c7ac7aa48e65226c1219c7afa543db9f553bef1173330a3f64c13

    • C:\Users\Admin\Desktop\DenyInitialize.pot

      Filesize

      1B

      MD5

      d1457b72c3fb323a2671125aef3eab5d

      SHA1

      5bab61eb53176449e25c2c82f172b82cb13ffb9d

      SHA256

      8a8de823d5ed3e12746a62ef169bcf372be0ca44f0a1236abc35df05d96928e1

      SHA512

      ca63c07ad35d8c9fb0c92d6146759b122d4ec5d3f67ebe2f30ddb69f9e6c9fd3bf31a5e408b08f1d4d9cd68120cced9e57f010bef3cde97653fed5470da7d1a0

    • memory/3748-0-0x00007FF868443000-0x00007FF868445000-memory.dmp

      Filesize

      8KB

    • memory/3748-1-0x0000000000D50000-0x0000000000E1A000-memory.dmp

      Filesize

      808KB

    • memory/3748-2-0x00007FF868440000-0x00007FF868F01000-memory.dmp

      Filesize

      10.8MB

    • memory/3748-16-0x00007FF868440000-0x00007FF868F01000-memory.dmp

      Filesize

      10.8MB

    • memory/4120-15-0x00007FF868440000-0x00007FF868F01000-memory.dmp

      Filesize

      10.8MB

    • memory/4120-17-0x00007FF868440000-0x00007FF868F01000-memory.dmp

      Filesize

      10.8MB

    • memory/4120-1182-0x00007FF868440000-0x00007FF868F01000-memory.dmp

      Filesize

      10.8MB