Analysis

  • max time kernel
    149s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    16-03-2024 20:03

General

  • Target

    2024-03-16_6c5819190ff74ba8dcaa64b57e1eb8f7_wannacry.exe

  • Size

    220KB

  • MD5

    6c5819190ff74ba8dcaa64b57e1eb8f7

  • SHA1

    7573ab29469e9d182f56d0b13c1dae41e9184526

  • SHA256

    3488e674a734e33410a122472c102763edb84b4184b10e041f9c774b9213bd22

  • SHA512

    f9dcb598f6ebc883239280166e6e733fc81275372574ce1017c5e89c6970701b543dd0282569755a7882d7beb64142ccb5e3e252ad8126b914b44620106c346f

  • SSDEEP

    3072:Ro9TAdr95wUV1vA89WdQvDbTimSDJF2fww83Wrp77lmjZ3brbSgNXWJa2qli3Tif:jr9mUVKQsJF2farzX1YTOyOZde5W

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
  • 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 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 54 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\2024-03-16_6c5819190ff74ba8dcaa64b57e1eb8f7_wannacry.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-03-16_6c5819190ff74ba8dcaa64b57e1eb8f7_wannacry.exe"
    1⤵
    • Checks computer location settings
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3492
    • C:\Users\Admin\AppData\Roaming\SatanCE.exe
      "C:\Users\Admin\AppData\Roaming\SatanCE.exe"
      2⤵
      • Checks computer location settings
      • Drops startup file
      • Executes dropped EXE
      • 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:700
      • 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:3664
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          4⤵
          • Interacts with shadow copies
          PID:4904
        • C:\Windows\System32\Wbem\WMIC.exe
          wmic shadowcopy delete
          4⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:4508
      • 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:2432
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} bootstatuspolicy ignoreallfailures
          4⤵
          • Modifies boot configuration data using bcdedit
          PID:4016
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} recoveryenabled no
          4⤵
          • Modifies boot configuration data using bcdedit
          PID:3844
      • C:\Windows\System32\cmd.exe
        "C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:4972
        • C:\Windows\system32\wbadmin.exe
          wbadmin delete catalog -quiet
          4⤵
          • Deletes backup catalog
          PID:4652
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:4300
  • C:\Windows\system32\wbengine.exe
    "C:\Windows\system32\wbengine.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:2240
  • C:\Windows\System32\vdsldr.exe
    C:\Windows\System32\vdsldr.exe -Embedding
    1⤵
      PID:1468
    • C:\Windows\System32\vds.exe
      C:\Windows\System32\vds.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:2092
    • C:\Windows\system32\OpenWith.exe
      C:\Windows\system32\OpenWith.exe -Embedding
      1⤵
      • Modifies registry class
      • Suspicious use of SetWindowsHookEx
      PID:2032

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

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

      Filesize

      220KB

      MD5

      6c5819190ff74ba8dcaa64b57e1eb8f7

      SHA1

      7573ab29469e9d182f56d0b13c1dae41e9184526

      SHA256

      3488e674a734e33410a122472c102763edb84b4184b10e041f9c774b9213bd22

      SHA512

      f9dcb598f6ebc883239280166e6e733fc81275372574ce1017c5e89c6970701b543dd0282569755a7882d7beb64142ccb5e3e252ad8126b914b44620106c346f

    • C:\Users\Admin\Documents\Warning

      Filesize

      18KB

      MD5

      c75b56f95828f12ebac6712cd64faefa

      SHA1

      3c5f44d61ef38a8707270adf1ddcde28dc9a25f6

      SHA256

      f6386967312097f6e26419438d6c5ff6d399d624f9099956a49e4e305417fdc2

      SHA512

      07f014a78c6b73fb7f0205a55cb390f525c7b622316b2adc32e8d3545ed9b052915cbfb5b1a7f4d498d279eb818143960f44b013e6152ef3304f5b9f3adaea56

    • memory/700-14-0x00007FFAFE2F0000-0x00007FFAFEDB1000-memory.dmp

      Filesize

      10.8MB

    • memory/700-20-0x0000000000FF0000-0x0000000001000000-memory.dmp

      Filesize

      64KB

    • memory/700-424-0x00007FFAFE2F0000-0x00007FFAFEDB1000-memory.dmp

      Filesize

      10.8MB

    • memory/700-425-0x0000000000FF0000-0x0000000001000000-memory.dmp

      Filesize

      64KB

    • memory/3492-0-0x0000000000980000-0x00000000009BE000-memory.dmp

      Filesize

      248KB

    • memory/3492-1-0x00007FFAFE2F0000-0x00007FFAFEDB1000-memory.dmp

      Filesize

      10.8MB

    • memory/3492-15-0x00007FFAFE2F0000-0x00007FFAFEDB1000-memory.dmp

      Filesize

      10.8MB