Analysis

  • max time kernel
    143s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230831-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230831-enlocale:en-usos:windows10-2004-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:\Users\Admin\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
  • 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
  • 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.

  • Modifies registry class 1 IoCs
  • Opens file in notepad (likely ransom note) 1 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 50 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_e95a41155865af1c8c3f613ce84da34f_destroyer_wannacry_JC.exe
    "C:\Users\Admin\AppData\Local\Temp\2023-08-23_e95a41155865af1c8c3f613ce84da34f_destroyer_wannacry_JC.exe"
    1⤵
    • Checks computer location settings
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2764
    • 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
      • Adds Run key to start application
      • Drops desktop.ini file(s)
      • Modifies registry class
      • Suspicious behavior: AddClipboardFormatListener
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1756
      • 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:4876
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          4⤵
          • Interacts with shadow copies
          PID:3264
        • C:\Windows\System32\Wbem\WMIC.exe
          wmic shadowcopy delete
          4⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:1148
      • 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:4996
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} bootstatuspolicy ignoreallfailures
          4⤵
          • Modifies boot configuration data using bcdedit
          PID:4612
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} recoveryenabled no
          4⤵
          • Modifies boot configuration data using bcdedit
          PID:2516
      • C:\Windows\System32\cmd.exe
        "C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:3756
        • C:\Windows\system32\wbadmin.exe
          wbadmin delete catalog -quiet
          4⤵
          • Deletes backup catalog
          PID:2172
      • 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:1480
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:1204
  • C:\Windows\system32\wbengine.exe
    "C:\Windows\system32\wbengine.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:2260
  • C:\Windows\System32\vdsldr.exe
    C:\Windows\System32\vdsldr.exe -Embedding
    1⤵
      PID:1804
    • C:\Windows\System32\vds.exe
      C:\Windows\System32\vds.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:5088

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

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          Downloads

          • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\2023-08-23_e95a41155865af1c8c3f613ce84da34f_destroyer_wannacry_JC.exe.log

            Filesize

            226B

            MD5

            28d7fcc2b910da5e67ebb99451a5f598

            SHA1

            a5bf77a53eda1208f4f37d09d82da0b9915a6747

            SHA256

            2391511d0a66ed9f84ae54254f51c09e43be01ad685db80da3201ec880abd49c

            SHA512

            2d8eb65cbf04ca506f4ef3b9ae13ccf05ebefab702269ba70ffd1ce9e6c615db0a3ee3ac0e81a06f546fc3250b7b76155dd51241c41b507a441b658c8e761df6

          • C:\Users\Admin\AppData\Roaming\InvokeDisconnect.odt

            Filesize

            1B

            MD5

            d1457b72c3fb323a2671125aef3eab5d

            SHA1

            5bab61eb53176449e25c2c82f172b82cb13ffb9d

            SHA256

            8a8de823d5ed3e12746a62ef169bcf372be0ca44f0a1236abc35df05d96928e1

            SHA512

            ca63c07ad35d8c9fb0c92d6146759b122d4ec5d3f67ebe2f30ddb69f9e6c9fd3bf31a5e408b08f1d4d9cd68120cced9e57f010bef3cde97653fed5470da7d1a0

          • 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

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

            Filesize

            26KB

            MD5

            e95a41155865af1c8c3f613ce84da34f

            SHA1

            ea5233564c4342a62a0f32874a6e98e1b4d02443

            SHA256

            8a90f0ae242598017c07ad7062357ad0a5d6bfc82bc676cc584a94f9ae8e2160

            SHA512

            bfb6dd93e0871dff3606e9b5bb7b5a501182d741b339bfb47c6bb3af96ca353293d4c331fdf3b29ad910cd0edf876cd519493177ac973be0bfd0f37b4713bea4

          • C:\Users\Admin\read_it.txt

            Filesize

            958B

            MD5

            82bb0eb835b55bc4c1699ae5f588b995

            SHA1

            ef7df5dc5a32e7948d029305923876584be60a11

            SHA256

            2d39eb12459b6ce81bff8421e9908401c683382779f6ddda854e9940a736eb6d

            SHA512

            a4728176c1fb3269e022ef4e8ba2effcc1c2d8c80a0007b3cecaf0dcd9500b84353e400564321d277b46697a08e7b626d1719d6fe61b18b486502b5b1f9e1312

          • memory/1756-14-0x00007FFF05830000-0x00007FFF062F1000-memory.dmp

            Filesize

            10.8MB

          • memory/1756-969-0x00007FFF05830000-0x00007FFF062F1000-memory.dmp

            Filesize

            10.8MB

          • memory/2764-0-0x0000000000930000-0x000000000093C000-memory.dmp

            Filesize

            48KB

          • memory/2764-1-0x00007FFF05830000-0x00007FFF062F1000-memory.dmp

            Filesize

            10.8MB

          • memory/2764-15-0x00007FFF05830000-0x00007FFF062F1000-memory.dmp

            Filesize

            10.8MB