Analysis

  • max time kernel
    118s
  • max time network
    119s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    22-01-2025 13:25

General

  • Target

    2025-01-22_b91edc9a88f5594fefc736db0269eb72_destroyer_wannacry.exe

  • Size

    27KB

  • MD5

    b91edc9a88f5594fefc736db0269eb72

  • SHA1

    3be3378fb44541dafb1771184ef65339c0406b83

  • SHA256

    b77060ede73003ffba13c286c44dd0ef8c5b1bb7437df6c9544cc435fe3aa4d4

  • SHA512

    ade74383b26a9636ab405cf7e46a1680dc163b9d85345fdfd939816b0044b1cf98aa9fc59925fba9a48f3601e7b82276b0c401dcb7066a8ff87f12f8157c882a

  • SSDEEP

    384:QJtvVCneCtqpR86DagyzemwbZ2oz/ZmO5xNhS6U1G:utdfCIA6HbJowu1G

Malware Config

Extracted

Path

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

Ransom Note
YOUR FILES HAVE BEEN ENCRYPTED!!! Don't worry, you can have your files returned. All your files like documents, photos, databases and other important are encrypted You must follow these steps To decrypt your files with in 6 Hours. Send 2 BTC to, bc1q9rvwt772dm79pdnk6syx25wnnh8khrqppj55rk Once we receive the BTC and its safe, we will send you a decryption key. WARNING: Tampering with the encryption or any attempt to decrypt any file will result in COMPLETE destruction of your data which will be on you!!! TICK TOCK!!!

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
  • 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\2025-01-22_b91edc9a88f5594fefc736db0269eb72_destroyer_wannacry.exe
    "C:\Users\Admin\AppData\Local\Temp\2025-01-22_b91edc9a88f5594fefc736db0269eb72_destroyer_wannacry.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1856
    • 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)
      • Suspicious behavior: AddClipboardFormatListener
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2580
      • 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:2204
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          4⤵
          • Interacts with shadow copies
          PID:2800
        • C:\Windows\System32\Wbem\WMIC.exe
          wmic shadowcopy delete
          4⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:3024
      • 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:2640
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} bootstatuspolicy ignoreallfailures
          4⤵
          • Modifies boot configuration data using bcdedit
          PID:2556
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} recoveryenabled no
          4⤵
          • Modifies boot configuration data using bcdedit
          PID:3012
      • C:\Windows\System32\cmd.exe
        "C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:2652
        • C:\Windows\system32\wbadmin.exe
          wbadmin delete catalog -quiet
          4⤵
          • Deletes backup catalog
          PID:3020
      • 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:448
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:320
  • C:\Windows\system32\wbengine.exe
    "C:\Windows\system32\wbengine.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:864
  • C:\Windows\System32\vdsldr.exe
    C:\Windows\System32\vdsldr.exe -Embedding
    1⤵
      PID:1796
    • C:\Windows\System32\vds.exe
      C:\Windows\System32\vds.exe
      1⤵
        PID:1712

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

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

        Filesize

        540B

        MD5

        fc06ea746145b09425708a2ec123519d

        SHA1

        3502166afc532c492f43beefa97e9c07b2cbbc8e

        SHA256

        3774aab168bf8ea634f247d49fbaafdf9707c60652be2a0617f4d3a5160e5c69

        SHA512

        f8870567b45f5632e422169a2f93105deda551ab1ee77d6286495313f938dcd6cf7d5226fc9a42abe929ecb75d19b2090cc8166d5d974462cce2f39fcf9634fe

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

        Filesize

        27KB

        MD5

        b91edc9a88f5594fefc736db0269eb72

        SHA1

        3be3378fb44541dafb1771184ef65339c0406b83

        SHA256

        b77060ede73003ffba13c286c44dd0ef8c5b1bb7437df6c9544cc435fe3aa4d4

        SHA512

        ade74383b26a9636ab405cf7e46a1680dc163b9d85345fdfd939816b0044b1cf98aa9fc59925fba9a48f3601e7b82276b0c401dcb7066a8ff87f12f8157c882a

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

        Filesize

        1B

        MD5

        d1457b72c3fb323a2671125aef3eab5d

        SHA1

        5bab61eb53176449e25c2c82f172b82cb13ffb9d

        SHA256

        8a8de823d5ed3e12746a62ef169bcf372be0ca44f0a1236abc35df05d96928e1

        SHA512

        ca63c07ad35d8c9fb0c92d6146759b122d4ec5d3f67ebe2f30ddb69f9e6c9fd3bf31a5e408b08f1d4d9cd68120cced9e57f010bef3cde97653fed5470da7d1a0

      • memory/1856-0-0x000007FEF5983000-0x000007FEF5984000-memory.dmp

        Filesize

        4KB

      • memory/1856-1-0x0000000000C50000-0x0000000000C5E000-memory.dmp

        Filesize

        56KB

      • memory/1856-3-0x000007FEF5980000-0x000007FEF636C000-memory.dmp

        Filesize

        9.9MB

      • memory/1856-11-0x000007FEF5980000-0x000007FEF636C000-memory.dmp

        Filesize

        9.9MB

      • memory/2580-8-0x00000000000D0000-0x00000000000DE000-memory.dmp

        Filesize

        56KB

      • memory/2580-9-0x000007FEF5980000-0x000007FEF636C000-memory.dmp

        Filesize

        9.9MB

      • memory/2580-10-0x000007FEF5980000-0x000007FEF636C000-memory.dmp

        Filesize

        9.9MB

      • memory/2580-960-0x000007FEF5980000-0x000007FEF636C000-memory.dmp

        Filesize

        9.9MB