Analysis

  • max time kernel
    119s
  • max time network
    120s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    16-09-2024 12:05

General

  • Target

    2024-09-16_e7d91103647b76f121b854fe806f80e2_wannacry.exe

  • Size

    533KB

  • MD5

    e7d91103647b76f121b854fe806f80e2

  • SHA1

    e6adca5f83dfb2cca099cf18d6960d422b82bb9e

  • SHA256

    04ed744d9643830fc5f0499203a6fde506b5f2c89868695bfe179a8edb3b28c0

  • SHA512

    69dc672bfe3a89ebe71b8041159afab0231701ea59438feb1f000ddddf52627c1f7c6f36bd8c2f77f037dd2659e6ef8f27db283476dae228522051659f2f67b0

  • SSDEEP

    12288:8k6L8u3RTkuA+y7GNfBGq5xJlA+MpCi4Pw25z5I0+OBjDRMmjrkR3wa:3bU4+Il2L1yw

Malware Config

Extracted

Path

C:\Users\Admin\AppData\Local\read_it.txt

Ransom Note
Don't worry, you can return all your files! All your files like documents, photos, databases and other important are encrypted What guarantees do we give to you? You can send 3 of your encrypted files and we decrypt it for free. You must follow these steps To decrypt your files : 1) Write on our Number :+66 970417453 ( In case of no answer in 24 hours check your spam folder or write us to this e-mail: [email protected]) 2) Obtain Bitcoin (You have to pay for decryption in Bitcoins. After payment we will send you the tool that will decrypt all your files.)

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 2 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
  • Sets desktop wallpaper using registry 2 TTPs 1 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\2024-09-16_e7d91103647b76f121b854fe806f80e2_wannacry.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-09-16_e7d91103647b76f121b854fe806f80e2_wannacry.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2976
    • 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)
      • Sets desktop wallpaper using registry
      • Suspicious behavior: AddClipboardFormatListener
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2388
      • 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:1928
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          4⤵
          • Interacts with shadow copies
          PID:3028
        • C:\Windows\System32\Wbem\WMIC.exe
          wmic shadowcopy delete
          4⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:2712
      • 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:2620
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} bootstatuspolicy ignoreallfailures
          4⤵
          • Modifies boot configuration data using bcdedit
          PID:3000
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} recoveryenabled no
          4⤵
          • Modifies boot configuration data using bcdedit
          PID:2808
      • C:\Windows\System32\cmd.exe
        "C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:1040
        • C:\Windows\system32\wbadmin.exe
          wbadmin delete catalog -quiet
          4⤵
          • Deletes backup catalog
          PID:1696
      • 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:2340
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:2312
  • C:\Windows\system32\wbengine.exe
    "C:\Windows\system32\wbengine.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:1892
  • C:\Windows\System32\vdsldr.exe
    C:\Windows\System32\vdsldr.exe -Embedding
    1⤵
      PID:1940
    • C:\Windows\System32\vds.exe
      C:\Windows\System32\vds.exe
      1⤵
        PID:2084

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

      • C:\Users\Admin\AppData\Local\read_it.txt

        Filesize

        582B

        MD5

        76e381f78e94c35d358a4fc048d3aa37

        SHA1

        361d4153f76f32d36c1edd3da27e59f41f7e2d0f

        SHA256

        db317b799b14715d1b26661dd60570faa3b5c377656d490cd2697f78271c413f

        SHA512

        ef1d2bd09d8e34eb6260d11a3ac821cdd1b6aa1dba0c8616cbed1d233979d39ceb00c369ccabb6630324ef0027a83b6b61729b2ed66d55bf249387782a1fe4e3

      • C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\1bogwdvw.default-release\storage\permanent\chrome\idb\3561288849sdhlie.sqlite.r1a6

        Filesize

        48KB

        MD5

        3d43ef7934a6dbf709931ba951579848

        SHA1

        ff4b759dfc0e904bd85182e09d4bc63c3ad526c6

        SHA256

        2fb73160c476a2df5c1db1ae809dab9c3b50585272909635adc6fc57e5b8cd84

        SHA512

        b9a5f74543984b1ad1e810b466177789922ae2fb6d59e1f472a8da0d2f67fdd2216b0c4f188a621653997f3c6294fa825e2fc74d642d696332b701edaa777760

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

        Filesize

        533KB

        MD5

        e7d91103647b76f121b854fe806f80e2

        SHA1

        e6adca5f83dfb2cca099cf18d6960d422b82bb9e

        SHA256

        04ed744d9643830fc5f0499203a6fde506b5f2c89868695bfe179a8edb3b28c0

        SHA512

        69dc672bfe3a89ebe71b8041159afab0231701ea59438feb1f000ddddf52627c1f7c6f36bd8c2f77f037dd2659e6ef8f27db283476dae228522051659f2f67b0

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

        Filesize

        1B

        MD5

        d1457b72c3fb323a2671125aef3eab5d

        SHA1

        5bab61eb53176449e25c2c82f172b82cb13ffb9d

        SHA256

        8a8de823d5ed3e12746a62ef169bcf372be0ca44f0a1236abc35df05d96928e1

        SHA512

        ca63c07ad35d8c9fb0c92d6146759b122d4ec5d3f67ebe2f30ddb69f9e6c9fd3bf31a5e408b08f1d4d9cd68120cced9e57f010bef3cde97653fed5470da7d1a0

      • memory/2388-8-0x0000000000A60000-0x0000000000AEC000-memory.dmp

        Filesize

        560KB

      • memory/2388-9-0x000007FEF5CD0000-0x000007FEF66BC000-memory.dmp

        Filesize

        9.9MB

      • memory/2388-10-0x000007FEF5CD0000-0x000007FEF66BC000-memory.dmp

        Filesize

        9.9MB

      • memory/2388-1122-0x000007FEF5CD0000-0x000007FEF66BC000-memory.dmp

        Filesize

        9.9MB

      • memory/2976-0-0x000007FEF5CD3000-0x000007FEF5CD4000-memory.dmp

        Filesize

        4KB

      • memory/2976-1-0x0000000000120000-0x00000000001AC000-memory.dmp

        Filesize

        560KB

      • memory/2976-2-0x000007FEF5CD0000-0x000007FEF66BC000-memory.dmp

        Filesize

        9.9MB

      • memory/2976-11-0x000007FEF5CD0000-0x000007FEF66BC000-memory.dmp

        Filesize

        9.9MB