Analysis

  • max time kernel
    117s
  • max time network
    118s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    14-10-2024 17:21

General

  • Target

    2024-10-14_76caee0502e3483b22ffe34508a06ec3_destroyer_wannacry.exe

  • Size

    26KB

  • MD5

    76caee0502e3483b22ffe34508a06ec3

  • SHA1

    c4120e980f86a2ab7bd29864e9045012c40ba70f

  • SHA256

    b4dc0cd3a5824ad15c8607c4cf23278b90d61946e2d904445e5707534a67d989

  • SHA512

    65f5bcee2c45d38d981638657d936d78096586659e1cd52a329876c1cac37aef105d97addce101158472f14322f1dbb5a932a08ea160d2e5d3a8b14d8db1d9ed

  • SSDEEP

    384:3tWZPzzxAm1vObMcJQ7o71+k4zxBSKrE7lGOy5o91Y5O9jx82vH:O7zxAmaXJQ7ogk426Jho925O9t82v

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 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
  • 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\2024-10-14_76caee0502e3483b22ffe34508a06ec3_destroyer_wannacry.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-10-14_76caee0502e3483b22ffe34508a06ec3_destroyer_wannacry.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2032
    • C:\Users\Admin\AppData\Roaming\illustartor.exe
      "C:\Users\Admin\AppData\Roaming\illustartor.exe"
      2⤵
      • Drops startup file
      • Executes dropped EXE
      • Adds Run key to start application
      • Drops desktop.ini file(s)
      • Suspicious behavior: AddClipboardFormatListener
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2784
      • 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:2832
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          4⤵
          • Interacts with shadow copies
          PID:2812
        • C:\Windows\System32\Wbem\WMIC.exe
          wmic shadowcopy delete
          4⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:1276
      • 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:2980
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} bootstatuspolicy ignoreallfailures
          4⤵
          • Modifies boot configuration data using bcdedit
          PID:2400
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} recoveryenabled no
          4⤵
          • Modifies boot configuration data using bcdedit
          PID:2672
      • C:\Windows\System32\cmd.exe
        "C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:2932
        • C:\Windows\system32\wbadmin.exe
          wbadmin delete catalog -quiet
          4⤵
          • Deletes backup catalog
          PID:2760
      • 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:2660
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:2624
  • C:\Windows\system32\wbengine.exe
    "C:\Windows\system32\wbengine.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:2940
  • C:\Windows\System32\vdsldr.exe
    C:\Windows\System32\vdsldr.exe -Embedding
    1⤵
      PID:864
    • C:\Windows\System32\vds.exe
      C:\Windows\System32\vds.exe
      1⤵
        PID:2816

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

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

        Filesize

        99B

        MD5

        a34e8b5fea52beb91dfc151fb35d4118

        SHA1

        d83d2450fa25795e7dd9b4a74a94aa4f559d7ca8

        SHA256

        3afcfc4894491b146cc04a21471937958945e7c8a8cc31621adc8607dec92e97

        SHA512

        7e51e3b4d68a7851e30a02d06e8efcfca44612ea2d5e52efec29fe1474b681be5ea75b2aca9066aa0994e2b79064750f0cbf9a05d56387e3eeaab3cda75f9e05

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

        Filesize

        26KB

        MD5

        76caee0502e3483b22ffe34508a06ec3

        SHA1

        c4120e980f86a2ab7bd29864e9045012c40ba70f

        SHA256

        b4dc0cd3a5824ad15c8607c4cf23278b90d61946e2d904445e5707534a67d989

        SHA512

        65f5bcee2c45d38d981638657d936d78096586659e1cd52a329876c1cac37aef105d97addce101158472f14322f1dbb5a932a08ea160d2e5d3a8b14d8db1d9ed

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

        Filesize

        1B

        MD5

        d1457b72c3fb323a2671125aef3eab5d

        SHA1

        5bab61eb53176449e25c2c82f172b82cb13ffb9d

        SHA256

        8a8de823d5ed3e12746a62ef169bcf372be0ca44f0a1236abc35df05d96928e1

        SHA512

        ca63c07ad35d8c9fb0c92d6146759b122d4ec5d3f67ebe2f30ddb69f9e6c9fd3bf31a5e408b08f1d4d9cd68120cced9e57f010bef3cde97653fed5470da7d1a0

      • memory/2032-0-0x000007FEF5E23000-0x000007FEF5E24000-memory.dmp

        Filesize

        4KB

      • memory/2032-1-0x0000000000CF0000-0x0000000000CFC000-memory.dmp

        Filesize

        48KB

      • memory/2032-3-0x000007FEF5E20000-0x000007FEF680C000-memory.dmp

        Filesize

        9.9MB

      • memory/2032-11-0x000007FEF5E20000-0x000007FEF680C000-memory.dmp

        Filesize

        9.9MB

      • memory/2784-8-0x0000000000FC0000-0x0000000000FCC000-memory.dmp

        Filesize

        48KB

      • memory/2784-9-0x000007FEF5E20000-0x000007FEF680C000-memory.dmp

        Filesize

        9.9MB

      • memory/2784-10-0x000007FEF5E20000-0x000007FEF680C000-memory.dmp

        Filesize

        9.9MB

      • memory/2784-1055-0x000007FEF5E20000-0x000007FEF680C000-memory.dmp

        Filesize

        9.9MB