Analysis

  • max time kernel
    139s
  • max time network
    148s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230831-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230831-enlocale:en-usos:windows10-2004-x64system
  • submitted
    07/09/2023, 19:06

General

  • Target

    2023-08-23_af77c5f294ae60256fc906d0fdb5c064_wannacry_JC.exe

  • Size

    288KB

  • MD5

    af77c5f294ae60256fc906d0fdb5c064

  • SHA1

    d3bab80b071bfd931e90c7a0f995ed940d124582

  • SHA256

    af5d4103305fda1d2a415dd22177eb670298b0c834733804de2fff7de015f618

  • SHA512

    0b93ad321025fbc12a34219159f29d6e749493dae9e38398d6f149f0668be3c7aedf2531ad6a96a75208e32f880991a5c5892a8f6be14f690592b136e1978f15

  • SSDEEP

    6144:73vkltq9RZw2tJ0B+x5IMnK8V3diKtKtdU6icE:r4oZw6JC+x5IMnK2diGKf5i

Malware Config

Extracted

Path

C:\Users\Default\How_to_recovery_files.bat

Ransom Note
echo off color 0a cls :MENU ECHO. ECHO -----!!! ALL YOUR FILES ARE ENCRYPTED !!!-------- ECHO. ECHO. Don't worry, you can return all your files! ECHO. ECHO All your files, documents, photos, databases and other important files are encrypted. ECHO. ECHO. The only method of recovering files is to purchase an unique private key with our decrypt Tools. ECHO. Only we can give you this key and only we can recover your files. ECHO. To be sure that we have a decryptor and it works, you can decrypt one file for free. ECHO. But this file should be of not valuable! ECHO. Attention do not try to decrypt the files using other Tools, ECHO. they may break and we will not be able to decrypt it. ECHO. ECHO. You must follow these steps To decrypt your files : ECHO. 1) In message please write your ID and wait your answer. ECHO. 2) Write on our [email protected] ( In case of no answer in 24 hours check your spam folder ECHO. or write us to Telegram ID https://t.me/cp00pc1) ECHO. Your ID is (QA2Z67DXLBFF1400FHN) ECHO. ECHO. 3) Obtain Bitcoin (You have to pay for decryption in Bitcoins. ECHO. After payment we will send you the tool that will decrypt all your files.) ECHO. ECHO. ECHO. ECHO.By SirAttacker SET /P M=
URLs

https://t.me/cp00pc1

Signatures

  • Chaos

    Ransomware family first seen in June 2021.

  • Chaos Ransomware 4 IoCs
  • Deletes shadow copies 2 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
  • Checks computer location settings 2 TTPs 2 IoCs

    Looks up country code configured in the registry, likely geofence.

  • 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).

  • Checks SCSI registry key(s) 3 TTPs 4 IoCs

    SCSI information is often read in order to detect sandboxing environments.

  • Interacts with shadow copies 2 TTPs 1 IoCs

    Shadow copies are often targeted by ransomware to inhibit system recovery.

  • Suspicious behavior: AddClipboardFormatListener 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 42 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\2023-08-23_af77c5f294ae60256fc906d0fdb5c064_wannacry_JC.exe
    "C:\Users\Admin\AppData\Local\Temp\2023-08-23_af77c5f294ae60256fc906d0fdb5c064_wannacry_JC.exe"
    1⤵
    • Checks computer location settings
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:320
    • C:\Users\Admin\AppData\Roaming\SecurityHealth.exe
      "C:\Users\Admin\AppData\Roaming\SecurityHealth.exe"
      2⤵
      • Checks computer location settings
      • 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:3740
      • 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:3036
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          4⤵
          • Interacts with shadow copies
          PID:4424
        • C:\Windows\System32\Wbem\WMIC.exe
          wmic shadowcopy delete
          4⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:2876
      • 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:4836
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} bootstatuspolicy ignoreallfailures
          4⤵
          • Modifies boot configuration data using bcdedit
          PID:3476
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} recoveryenabled no
          4⤵
          • Modifies boot configuration data using bcdedit
          PID:4916
      • C:\Windows\System32\cmd.exe
        "C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:3004
        • C:\Windows\system32\wbadmin.exe
          wbadmin delete catalog -quiet
          4⤵
          • Deletes backup catalog
          PID:2256
      • C:\Windows\system32\cmd.exe
        C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Roaming\How_to_recovery_files.bat" "
        3⤵
          PID:2320
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:2348
    • C:\Windows\system32\wbengine.exe
      "C:\Windows\system32\wbengine.exe"
      1⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:1656
    • C:\Windows\System32\vdsldr.exe
      C:\Windows\System32\vdsldr.exe -Embedding
      1⤵
        PID:3124
      • C:\Windows\System32\vds.exe
        C:\Windows\System32\vds.exe
        1⤵
        • Checks SCSI registry key(s)
        PID:4800

      Network

            MITRE ATT&CK Enterprise v15

            Replay Monitor

            Loading Replay Monitor...

            Downloads

            • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\2023-08-23_af77c5f294ae60256fc906d0fdb5c064_wannacry_JC.exe.log

              Filesize

              1KB

              MD5

              baf55b95da4a601229647f25dad12878

              SHA1

              abc16954ebfd213733c4493fc1910164d825cac8

              SHA256

              ee954c5d8156fd8890e582c716e5758ed9b33721258f10e758bdc31ccbcb1924

              SHA512

              24f502fedb1a305d0d7b08857ffc1db9b2359ff34e06d5748ecc84e35c985f29a20d9f0a533bea32d234ab37097ec0481620c63b14ac89b280e75e14d19fd545

            • C:\Users\Admin\AppData\Roaming\How_to_recovery_files.bat

              Filesize

              1KB

              MD5

              5aa3fff4021de1b133b5c5bc204cc04a

              SHA1

              a5ee213995d574873353859d8a74c538fa5d27d1

              SHA256

              05df982638c10b0e90be5f180e665329fd0e94ff4c21afd80c5d894bd7e5846a

              SHA512

              37a5b408e3b1f1d5416580435b94585b836c8e8523031f3369ba250225c7a7064670ea6a8ef182926f1745cf309ca6ce58c6f1c4eaf0b2923df4a2a2f5641e45

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

              Filesize

              288KB

              MD5

              af77c5f294ae60256fc906d0fdb5c064

              SHA1

              d3bab80b071bfd931e90c7a0f995ed940d124582

              SHA256

              af5d4103305fda1d2a415dd22177eb670298b0c834733804de2fff7de015f618

              SHA512

              0b93ad321025fbc12a34219159f29d6e749493dae9e38398d6f149f0668be3c7aedf2531ad6a96a75208e32f880991a5c5892a8f6be14f690592b136e1978f15

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

              Filesize

              288KB

              MD5

              af77c5f294ae60256fc906d0fdb5c064

              SHA1

              d3bab80b071bfd931e90c7a0f995ed940d124582

              SHA256

              af5d4103305fda1d2a415dd22177eb670298b0c834733804de2fff7de015f618

              SHA512

              0b93ad321025fbc12a34219159f29d6e749493dae9e38398d6f149f0668be3c7aedf2531ad6a96a75208e32f880991a5c5892a8f6be14f690592b136e1978f15

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

              Filesize

              288KB

              MD5

              af77c5f294ae60256fc906d0fdb5c064

              SHA1

              d3bab80b071bfd931e90c7a0f995ed940d124582

              SHA256

              af5d4103305fda1d2a415dd22177eb670298b0c834733804de2fff7de015f618

              SHA512

              0b93ad321025fbc12a34219159f29d6e749493dae9e38398d6f149f0668be3c7aedf2531ad6a96a75208e32f880991a5c5892a8f6be14f690592b136e1978f15

            • C:\Users\Default\AppData\Roaming\Microsoft\Windows\SendTo\Fax Recipient.lnk

              Filesize

              1B

              MD5

              d1457b72c3fb323a2671125aef3eab5d

              SHA1

              5bab61eb53176449e25c2c82f172b82cb13ffb9d

              SHA256

              8a8de823d5ed3e12746a62ef169bcf372be0ca44f0a1236abc35df05d96928e1

              SHA512

              ca63c07ad35d8c9fb0c92d6146759b122d4ec5d3f67ebe2f30ddb69f9e6c9fd3bf31a5e408b08f1d4d9cd68120cced9e57f010bef3cde97653fed5470da7d1a0

            • C:\Users\Default\How_to_recovery_files.bat

              Filesize

              1KB

              MD5

              5aa3fff4021de1b133b5c5bc204cc04a

              SHA1

              a5ee213995d574873353859d8a74c538fa5d27d1

              SHA256

              05df982638c10b0e90be5f180e665329fd0e94ff4c21afd80c5d894bd7e5846a

              SHA512

              37a5b408e3b1f1d5416580435b94585b836c8e8523031f3369ba250225c7a7064670ea6a8ef182926f1745cf309ca6ce58c6f1c4eaf0b2923df4a2a2f5641e45

            • memory/320-0-0x0000000000670000-0x00000000006B8000-memory.dmp

              Filesize

              288KB

            • memory/320-15-0x00007FFF29CD0000-0x00007FFF2A791000-memory.dmp

              Filesize

              10.8MB

            • memory/320-2-0x000000001B360000-0x000000001B370000-memory.dmp

              Filesize

              64KB

            • memory/320-1-0x00007FFF29CD0000-0x00007FFF2A791000-memory.dmp

              Filesize

              10.8MB

            • memory/3740-16-0x00007FFF29CD0000-0x00007FFF2A791000-memory.dmp

              Filesize

              10.8MB

            • memory/3740-17-0x000000001B970000-0x000000001B980000-memory.dmp

              Filesize

              64KB

            • memory/3740-717-0x00007FFF29CD0000-0x00007FFF2A791000-memory.dmp

              Filesize

              10.8MB

            • memory/3740-836-0x000000001B970000-0x000000001B980000-memory.dmp

              Filesize

              64KB