Analysis

  • max time kernel
    117s
  • max time network
    120s
  • platform
    windows7_x64
  • resource
    win7-20230831-en
  • resource tags

    arch:x64arch:x86image:win7-20230831-enlocale:en-usos:windows7-x64system
  • submitted
    08/09/2023, 12:42

General

  • Target

    2023-08-23_e95a41155865af1c8c3f613ce84da34f_destroyer_wannacry_JC.exe

  • Size

    26KB

  • MD5

    e95a41155865af1c8c3f613ce84da34f

  • SHA1

    ea5233564c4342a62a0f32874a6e98e1b4d02443

  • SHA256

    8a90f0ae242598017c07ad7062357ad0a5d6bfc82bc676cc584a94f9ae8e2160

  • SHA512

    bfb6dd93e0871dff3606e9b5bb7b5a501182d741b339bfb47c6bb3af96ca353293d4c331fdf3b29ad910cd0edf876cd519493177ac973be0bfd0f37b4713bea4

  • SSDEEP

    384:RjzZVQvRUXh0t1sNTFxX9ptnemoWO0Q91mH0b6JWG:gA9FhPtRXW9UUb4b

Malware Config

Extracted

Path

C:\MSOCache\All Users\{90140000-0019-0409-0000-0000000FF1CE}-C\read_it.txt

Family

chaos

Ransom Note
----> Chaos is multi language ransomware. Translate your note to any language <---- All of your files have been encrypted Your computer was infected with a ransomware virus. Your files have been encrypted and you won't be able to decrypt them without our help.What can I do to get my files back?You can buy our special decryption software, this software will allow you to recover all of your data and remove the ransomware from your computer.The price for the software is $1,500. Payment can be made in Bitcoin only. How do I pay, where do I get Bitcoin? Purchasing Bitcoin varies from country to country, you are best advised to do a quick google search yourself to find out how to buy Bitcoin. Many of our customers have reported these sites to be fast and reliable: Coinmama - hxxps://www.coinmama.com Bitpanda - hxxps://www.bitpanda.com Payment informationAmount: 0.1473766 BTC Bitcoin Address: bc1qlnzcep4l4ac0ttdrq7awxev9ehu465f2

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
  • 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
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Interacts with shadow copies 2 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 5 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\2023-08-23_e95a41155865af1c8c3f613ce84da34f_destroyer_wannacry_JC.exe
    "C:\Users\Admin\AppData\Local\Temp\2023-08-23_e95a41155865af1c8c3f613ce84da34f_destroyer_wannacry_JC.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2420
    • 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:1480
      • 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:2356
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          4⤵
          • Interacts with shadow copies
          PID:2624
        • C:\Windows\System32\Wbem\WMIC.exe
          wmic shadowcopy delete
          4⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:2684
      • 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:3036
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} bootstatuspolicy ignoreallfailures
          4⤵
          • Modifies boot configuration data using bcdedit
          PID:2320
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} recoveryenabled no
          4⤵
          • Modifies boot configuration data using bcdedit
          PID:2348
      • C:\Windows\System32\cmd.exe
        "C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:3060
        • C:\Windows\system32\wbadmin.exe
          wbadmin delete catalog -quiet
          4⤵
          • Deletes backup catalog
          PID:824
      • 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:3064
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:2732
  • C:\Windows\system32\wbengine.exe
    "C:\Windows\system32\wbengine.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:1908
  • C:\Windows\System32\vdsldr.exe
    C:\Windows\System32\vdsldr.exe -Embedding
    1⤵
      PID:2836
    • C:\Windows\System32\vds.exe
      C:\Windows\System32\vds.exe
      1⤵
        PID:1960

      Network

            MITRE ATT&CK Enterprise v15

            Replay Monitor

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            Downloads

            • C:\MSOCache\All Users\{90140000-0011-0000-0000-0000000FF1CE}-C\ProPsWW2.cab

              Filesize

              1B

              MD5

              d1457b72c3fb323a2671125aef3eab5d

              SHA1

              5bab61eb53176449e25c2c82f172b82cb13ffb9d

              SHA256

              8a8de823d5ed3e12746a62ef169bcf372be0ca44f0a1236abc35df05d96928e1

              SHA512

              ca63c07ad35d8c9fb0c92d6146759b122d4ec5d3f67ebe2f30ddb69f9e6c9fd3bf31a5e408b08f1d4d9cd68120cced9e57f010bef3cde97653fed5470da7d1a0

            • C:\MSOCache\All Users\{90140000-0019-0409-0000-0000000FF1CE}-C\read_it.txt

              Filesize

              958B

              MD5

              82bb0eb835b55bc4c1699ae5f588b995

              SHA1

              ef7df5dc5a32e7948d029305923876584be60a11

              SHA256

              2d39eb12459b6ce81bff8421e9908401c683382779f6ddda854e9940a736eb6d

              SHA512

              a4728176c1fb3269e022ef4e8ba2effcc1c2d8c80a0007b3cecaf0dcd9500b84353e400564321d277b46697a08e7b626d1719d6fe61b18b486502b5b1f9e1312

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

              Filesize

              958B

              MD5

              82bb0eb835b55bc4c1699ae5f588b995

              SHA1

              ef7df5dc5a32e7948d029305923876584be60a11

              SHA256

              2d39eb12459b6ce81bff8421e9908401c683382779f6ddda854e9940a736eb6d

              SHA512

              a4728176c1fb3269e022ef4e8ba2effcc1c2d8c80a0007b3cecaf0dcd9500b84353e400564321d277b46697a08e7b626d1719d6fe61b18b486502b5b1f9e1312

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

              Filesize

              26KB

              MD5

              e95a41155865af1c8c3f613ce84da34f

              SHA1

              ea5233564c4342a62a0f32874a6e98e1b4d02443

              SHA256

              8a90f0ae242598017c07ad7062357ad0a5d6bfc82bc676cc584a94f9ae8e2160

              SHA512

              bfb6dd93e0871dff3606e9b5bb7b5a501182d741b339bfb47c6bb3af96ca353293d4c331fdf3b29ad910cd0edf876cd519493177ac973be0bfd0f37b4713bea4

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

              Filesize

              26KB

              MD5

              e95a41155865af1c8c3f613ce84da34f

              SHA1

              ea5233564c4342a62a0f32874a6e98e1b4d02443

              SHA256

              8a90f0ae242598017c07ad7062357ad0a5d6bfc82bc676cc584a94f9ae8e2160

              SHA512

              bfb6dd93e0871dff3606e9b5bb7b5a501182d741b339bfb47c6bb3af96ca353293d4c331fdf3b29ad910cd0edf876cd519493177ac973be0bfd0f37b4713bea4

            • memory/1480-7-0x0000000000D10000-0x0000000000D1C000-memory.dmp

              Filesize

              48KB

            • memory/1480-9-0x000007FEF5750000-0x000007FEF613C000-memory.dmp

              Filesize

              9.9MB

            • memory/1480-12-0x000000001AFF0000-0x000000001B070000-memory.dmp

              Filesize

              512KB

            • memory/1480-25-0x000007FEF5750000-0x000007FEF613C000-memory.dmp

              Filesize

              9.9MB

            • memory/1480-30-0x000000001AFF0000-0x000000001B070000-memory.dmp

              Filesize

              512KB

            • memory/2420-8-0x000007FEF5750000-0x000007FEF613C000-memory.dmp

              Filesize

              9.9MB

            • memory/2420-0-0x0000000001070000-0x000000000107C000-memory.dmp

              Filesize

              48KB

            • memory/2420-1-0x000007FEF5750000-0x000007FEF613C000-memory.dmp

              Filesize

              9.9MB