Analysis

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

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    18-02-2025 06:31

General

  • Target

    2025-02-18_9ab2affe7c7eb0d1b95ccf4216d7d972_wannacry.exe

  • Size

    508KB

  • MD5

    9ab2affe7c7eb0d1b95ccf4216d7d972

  • SHA1

    902113db29be4f88cb61b93145dc09bbd0ca2690

  • SHA256

    288f536597498859b243ab7c280b08fda04c1d29230334a62654daf56e7fa70a

  • SHA512

    ce44e83b8296c6bf5e867cfdfe08eacfebea20ba09e91d9c1859ec47af4634ca932392a00299c8555ec7fbd5d39230c7987aaa4d6a725fde24d4497b0679aa31

  • SSDEEP

    12288:m4rJa124PiPzOvVTp0e6qD7dxYOo10n8GxQmTRTE9hoyi8r7IK6Bww5:m73E+EAKa

Malware Config

Signatures

  • Chaos

    Ransomware family first seen in June 2021.

  • Chaos Ransomware 3 IoCs
  • Chaos family
  • 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 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).

  • 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 2 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\2025-02-18_9ab2affe7c7eb0d1b95ccf4216d7d972_wannacry.exe
    "C:\Users\Admin\AppData\Local\Temp\2025-02-18_9ab2affe7c7eb0d1b95ccf4216d7d972_wannacry.exe"
    1⤵
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2108
    • C:\Users\Admin\AppData\Roaming\svchost.exe
      "C:\Users\Admin\AppData\Roaming\svchost.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:2700
      • 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:2876
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          4⤵
          • Interacts with shadow copies
          PID:2920
        • C:\Windows\System32\Wbem\WMIC.exe
          wmic shadowcopy delete
          4⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:2692
      • 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:1332
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} bootstatuspolicy ignoreallfailures
          4⤵
          • Modifies boot configuration data using bcdedit
          PID:2432
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} recoveryenabled no
          4⤵
          • Modifies boot configuration data using bcdedit
          PID:1800
      • C:\Windows\System32\cmd.exe
        "C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:1580
        • C:\Windows\system32\wbadmin.exe
          wbadmin delete catalog -quiet
          4⤵
          • Deletes backup catalog
          PID:2860
      • 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:768
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:3012
  • C:\Windows\system32\wbengine.exe
    "C:\Windows\system32\wbengine.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:2516
  • C:\Windows\System32\vdsldr.exe
    C:\Windows\System32\vdsldr.exe -Embedding
    1⤵
      PID:1824
    • C:\Windows\System32\vds.exe
      C:\Windows\System32\vds.exe
      1⤵
        PID:2680

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

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

        Filesize

        105B

        MD5

        a9438a0d642751f0da1f6f3ced742cf0

        SHA1

        945892b565d6fece6e4f7c186fcaea6a077459df

        SHA256

        762654958bef832abaea261654d9e47a4313f503ee9bac880d1bf0d3579e032e

        SHA512

        ff8ded51608f928db421fdb89c756b163ca0d01823e03402b034286a6933ae0a7776ff8a45be10c0b5ef83fd22c1de8b7663013a20a822d951c65465cc20edbe

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

        Filesize

        508KB

        MD5

        9ab2affe7c7eb0d1b95ccf4216d7d972

        SHA1

        902113db29be4f88cb61b93145dc09bbd0ca2690

        SHA256

        288f536597498859b243ab7c280b08fda04c1d29230334a62654daf56e7fa70a

        SHA512

        ce44e83b8296c6bf5e867cfdfe08eacfebea20ba09e91d9c1859ec47af4634ca932392a00299c8555ec7fbd5d39230c7987aaa4d6a725fde24d4497b0679aa31

      • C:\Users\Default\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Notepad.lnk

        Filesize

        1B

        MD5

        d1457b72c3fb323a2671125aef3eab5d

        SHA1

        5bab61eb53176449e25c2c82f172b82cb13ffb9d

        SHA256

        8a8de823d5ed3e12746a62ef169bcf372be0ca44f0a1236abc35df05d96928e1

        SHA512

        ca63c07ad35d8c9fb0c92d6146759b122d4ec5d3f67ebe2f30ddb69f9e6c9fd3bf31a5e408b08f1d4d9cd68120cced9e57f010bef3cde97653fed5470da7d1a0

      • memory/2108-0-0x000007FEF56D3000-0x000007FEF56D4000-memory.dmp

        Filesize

        4KB

      • memory/2108-1-0x00000000010B0000-0x0000000001136000-memory.dmp

        Filesize

        536KB

      • memory/2108-3-0x000007FEF56D0000-0x000007FEF60BC000-memory.dmp

        Filesize

        9.9MB

      • memory/2108-8-0x000007FEF56D0000-0x000007FEF60BC000-memory.dmp

        Filesize

        9.9MB

      • memory/2700-10-0x000007FEF56D0000-0x000007FEF60BC000-memory.dmp

        Filesize

        9.9MB

      • memory/2700-9-0x00000000000B0000-0x0000000000136000-memory.dmp

        Filesize

        536KB

      • memory/2700-11-0x000007FEF56D0000-0x000007FEF60BC000-memory.dmp

        Filesize

        9.9MB

      • memory/2700-1058-0x000007FEF56D0000-0x000007FEF60BC000-memory.dmp

        Filesize

        9.9MB