Analysis

  • max time kernel
    122s
  • max time network
    127s
  • platform
    windows7_x64
  • resource
    win7-20240704-en
  • resource tags

    arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
  • submitted
    28-07-2024 20:22

General

  • Target

    2024-07-28_0bc7112ee4755de56b7fb22758e47182_destroyer_wannacry.exe

  • Size

    24KB

  • MD5

    0bc7112ee4755de56b7fb22758e47182

  • SHA1

    bb2d11065ada048f80786deb072fbdbc265415a0

  • SHA256

    95eaf7092864e622c9bca0a5a3339480d03adaf19f069f5419de52c8f7f75a69

  • SHA512

    846a28920edae418648c09e24680d459b74f9a2a7ca02ddf06ee51bd6a7c34afb86b02b7aff615fda749acbdce0f4388801e4e25360737cad6bd05d320a9fed9

  • SSDEEP

    384:9YenjLLAvOGnLR1TYZdiI8YSxswOVp91kodUxDGg:MmGLHTYZ36c9zmxDb

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 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) 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 7 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\2024-07-28_0bc7112ee4755de56b7fb22758e47182_destroyer_wannacry.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-07-28_0bc7112ee4755de56b7fb22758e47182_destroyer_wannacry.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2120
    • C:\Users\Admin\AppData\Roaming\svc.exe
      "C:\Users\Admin\AppData\Roaming\svc.exe"
      2⤵
      • Drops startup file
      • Executes dropped EXE
      • Drops desktop.ini file(s)
      • Suspicious behavior: AddClipboardFormatListener
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2796
      • 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:2900
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          4⤵
          • Interacts with shadow copies
          PID:2548
        • C:\Windows\System32\Wbem\WMIC.exe
          wmic shadowcopy delete
          4⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:1124
      • 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:2964
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} bootstatuspolicy ignoreallfailures
          4⤵
          • Modifies boot configuration data using bcdedit
          PID:1972
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} recoveryenabled no
          4⤵
          • Modifies boot configuration data using bcdedit
          PID:2056
      • C:\Windows\System32\cmd.exe
        "C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:2176
        • C:\Windows\system32\wbadmin.exe
          wbadmin delete catalog -quiet
          4⤵
          • Deletes backup catalog
          PID:1924
      • 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:2424
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:2828
  • C:\Windows\system32\wbengine.exe
    "C:\Windows\system32\wbengine.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:660
  • C:\Windows\System32\vdsldr.exe
    C:\Windows\System32\vdsldr.exe -Embedding
    1⤵
      PID:2600
    • C:\Windows\System32\vds.exe
      C:\Windows\System32\vds.exe
      1⤵
        PID:1788

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

      • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Crashpad\read_it.txt

        Filesize

        39B

        MD5

        3b3e0dd3e4aacca142ceafe85ca241c4

        SHA1

        a1d3d848af04f434ea3e22b3d4162d2c123c66ff

        SHA256

        5974342e3165d7b59d045e226c7081d89f6695ec145b037172e6e562229079a3

        SHA512

        139c99ec632c9799355cf5972520a7a926b6349c6740a00c9a71b74da8659eaacc4bac6264c1bb3187a86893b97ae8a0e5d75522f2ad19e5108d6d69f10465e4

      • C:\Users\Admin\AppData\Roaming\EnableUnblock.cab

        Filesize

        1B

        MD5

        d1457b72c3fb323a2671125aef3eab5d

        SHA1

        5bab61eb53176449e25c2c82f172b82cb13ffb9d

        SHA256

        8a8de823d5ed3e12746a62ef169bcf372be0ca44f0a1236abc35df05d96928e1

        SHA512

        ca63c07ad35d8c9fb0c92d6146759b122d4ec5d3f67ebe2f30ddb69f9e6c9fd3bf31a5e408b08f1d4d9cd68120cced9e57f010bef3cde97653fed5470da7d1a0

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

        Filesize

        24KB

        MD5

        0bc7112ee4755de56b7fb22758e47182

        SHA1

        bb2d11065ada048f80786deb072fbdbc265415a0

        SHA256

        95eaf7092864e622c9bca0a5a3339480d03adaf19f069f5419de52c8f7f75a69

        SHA512

        846a28920edae418648c09e24680d459b74f9a2a7ca02ddf06ee51bd6a7c34afb86b02b7aff615fda749acbdce0f4388801e4e25360737cad6bd05d320a9fed9

      • memory/2120-0-0x000007FEF62D3000-0x000007FEF62D4000-memory.dmp

        Filesize

        4KB

      • memory/2120-1-0x00000000011E0000-0x00000000011EC000-memory.dmp

        Filesize

        48KB

      • memory/2796-7-0x0000000000DB0000-0x0000000000DBC000-memory.dmp

        Filesize

        48KB

      • memory/2796-9-0x000007FEF62D0000-0x000007FEF6CBC000-memory.dmp

        Filesize

        9.9MB

      • memory/2796-73-0x000007FEF62D0000-0x000007FEF6CBC000-memory.dmp

        Filesize

        9.9MB

      • memory/2796-946-0x000007FEF62D0000-0x000007FEF6CBC000-memory.dmp

        Filesize

        9.9MB