Analysis

  • max time kernel
    143s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240709-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23-07-2024 16:25

General

  • Target

    2024-07-23_7464d5fe58d9a1423dc89d2e14a0b44d_destroyer_wannacry.exe

  • Size

    21KB

  • MD5

    7464d5fe58d9a1423dc89d2e14a0b44d

  • SHA1

    e2c1af1fe77022350f40e289da12c432a9c539b3

  • SHA256

    f527c0f6f450394b45e18c44c107fe325cadf6317cf1e826f0a3141981cca031

  • SHA512

    22409e1b91fc7218d8e1be524708e860a5895302f40600426b9af3cef7bab6e7d495c19e0f1e1c77e5f347993dacb92f383fe0fcc3a231f8dc2347156356e807

  • SSDEEP

    384:d3Mg/bqo2jVBgFSpSOjuwzUnJyr91CnttgpZem:nqo2puFSp/jKJyr94gHem

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 2 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 49 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\2024-07-23_7464d5fe58d9a1423dc89d2e14a0b44d_destroyer_wannacry.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-07-23_7464d5fe58d9a1423dc89d2e14a0b44d_destroyer_wannacry.exe"
    1⤵
    • Checks computer location settings
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1148
    • 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:4364
      • 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:848
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          4⤵
          • Interacts with shadow copies
          PID:976
        • C:\Windows\System32\Wbem\WMIC.exe
          wmic shadowcopy delete
          4⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:3512
      • 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:3332
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} bootstatuspolicy ignoreallfailures
          4⤵
          • Modifies boot configuration data using bcdedit
          PID:640
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} recoveryenabled no
          4⤵
          • Modifies boot configuration data using bcdedit
          PID:4228
      • C:\Windows\System32\cmd.exe
        "C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:4440
        • C:\Windows\system32\wbadmin.exe
          wbadmin delete catalog -quiet
          4⤵
          • Deletes backup catalog
          PID:3868
      • 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:4328
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:3876
  • C:\Windows\system32\wbengine.exe
    "C:\Windows\system32\wbengine.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:4108
  • C:\Windows\System32\vdsldr.exe
    C:\Windows\System32\vdsldr.exe -Embedding
    1⤵
      PID:2504
    • C:\Windows\System32\vds.exe
      C:\Windows\System32\vds.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:2800

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

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

      Filesize

      21KB

      MD5

      7464d5fe58d9a1423dc89d2e14a0b44d

      SHA1

      e2c1af1fe77022350f40e289da12c432a9c539b3

      SHA256

      f527c0f6f450394b45e18c44c107fe325cadf6317cf1e826f0a3141981cca031

      SHA512

      22409e1b91fc7218d8e1be524708e860a5895302f40600426b9af3cef7bab6e7d495c19e0f1e1c77e5f347993dacb92f383fe0fcc3a231f8dc2347156356e807

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

      Filesize

      14B

      MD5

      a3d28c7fe8028d134ccc45cc349ba5fb

      SHA1

      f94f4ef8929553bd85ca4c76d7960f383880bcbb

      SHA256

      98307474cacdf3133fcc994c93b2b838cdfe9125ab87eee80c9cd1eec3c6c728

      SHA512

      e30c771cc6696149eb161fef90a73e72bb3e5057204c6f40f9ca1bd692279c090bd882edd76791e3228e44035f32b7b790baf3c516e6548bdbc51d7a298e27c3

    • memory/1148-0-0x0000000000A10000-0x0000000000A1C000-memory.dmp

      Filesize

      48KB

    • memory/1148-1-0x00007FFCC9A53000-0x00007FFCC9A55000-memory.dmp

      Filesize

      8KB

    • memory/4364-14-0x00007FFCC9A50000-0x00007FFCCA511000-memory.dmp

      Filesize

      10.8MB

    • memory/4364-511-0x00007FFCC9A50000-0x00007FFCCA511000-memory.dmp

      Filesize

      10.8MB