Analysis

  • max time kernel
    149s
  • max time network
    154s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    11-10-2024 00:13

General

  • Target

    2024-10-10_cd975130b8fed5c8ebadc0257e2548b6_destroyer_wannacry.exe

  • Size

    22KB

  • MD5

    cd975130b8fed5c8ebadc0257e2548b6

  • SHA1

    63237a38eb3fa9745e2c8a5095c3144f8707b1ae

  • SHA256

    abe16256e4e4afc5c0d5db562db9e5a3727deb499e416f42c981d2392a3a5e27

  • SHA512

    2a1031f00d022a2efb578d39de305b2679750f32f3cea72e9b60714937681f7597f66ca0f8fc434e35c1a439c0b4716846c064d73757b93142f572ae43b7cc52

  • SSDEEP

    384:K3Mg/bqo21iP3pZkm81mUJRr91CB76Le1P:wqo2ypZkm81m8Rr9yqex

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.

  • 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 3 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Drops desktop.ini file(s) 34 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 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 47 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\2024-10-10_cd975130b8fed5c8ebadc0257e2548b6_destroyer_wannacry.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-10-10_cd975130b8fed5c8ebadc0257e2548b6_destroyer_wannacry.exe"
    1⤵
    • Checks computer location settings
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3868
    • C:\Users\Admin\AppData\Roaming\svchost.exe
      "C:\Users\Admin\AppData\Roaming\svchost.exe"
      2⤵
      • Checks computer location settings
      • Drops startup file
      • Executes dropped EXE
      • Drops desktop.ini file(s)
      • Modifies registry class
      • Suspicious behavior: AddClipboardFormatListener
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1204
      • 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:3716
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          4⤵
          • Interacts with shadow copies
          PID:1140
        • C:\Windows\System32\Wbem\WMIC.exe
          wmic shadowcopy delete
          4⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:3848
      • 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:1384
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} bootstatuspolicy ignoreallfailures
          4⤵
          • Modifies boot configuration data using bcdedit
          PID:4080
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} recoveryenabled no
          4⤵
          • Modifies boot configuration data using bcdedit
          PID:2900
      • C:\Windows\System32\cmd.exe
        "C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:2808
        • C:\Windows\system32\wbadmin.exe
          wbadmin delete catalog -quiet
          4⤵
          • Deletes backup catalog
          PID:2192
      • 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:3412
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:2320
  • C:\Windows\system32\wbengine.exe
    "C:\Windows\system32\wbengine.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:4616
  • C:\Windows\System32\vdsldr.exe
    C:\Windows\System32\vdsldr.exe -Embedding
    1⤵
      PID:4468
    • C:\Windows\System32\vds.exe
      C:\Windows\System32\vds.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:624

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

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

      Filesize

      22KB

      MD5

      cd975130b8fed5c8ebadc0257e2548b6

      SHA1

      63237a38eb3fa9745e2c8a5095c3144f8707b1ae

      SHA256

      abe16256e4e4afc5c0d5db562db9e5a3727deb499e416f42c981d2392a3a5e27

      SHA512

      2a1031f00d022a2efb578d39de305b2679750f32f3cea72e9b60714937681f7597f66ca0f8fc434e35c1a439c0b4716846c064d73757b93142f572ae43b7cc52

    • C:\Users\Admin\Documents\read_it.txt

      Filesize

      372B

      MD5

      68dbd4c049d0b443c7dfadfb83f21593

      SHA1

      cf9c16d96484c70695c08820b64b4f0ca25d510a

      SHA256

      4b9c2f074ef7238e2b9b69dfd33e3210698e386ba7f5d357050d3198d6e2a265

      SHA512

      ea478277d45f83e9788cb73f697dbc30cd893d1ac54ef84566f2dbbde9b3a349481d724fe9032debd9e86dc736c3394871876388898d8277a1a27043195589ce

    • memory/1204-15-0x00007FFE642D0000-0x00007FFE64D91000-memory.dmp

      Filesize

      10.8MB

    • memory/1204-458-0x00007FFE642D0000-0x00007FFE64D91000-memory.dmp

      Filesize

      10.8MB

    • memory/3868-0-0x00007FFE642D3000-0x00007FFE642D5000-memory.dmp

      Filesize

      8KB

    • memory/3868-1-0x0000000000830000-0x000000000083C000-memory.dmp

      Filesize

      48KB

    • memory/3868-2-0x00007FFE642D3000-0x00007FFE642D5000-memory.dmp

      Filesize

      8KB