Resubmissions

23-07-2024 13:55

240723-q8alpswflc 10

06-09-2021 06:44

210906-hhm54safa3 10

Analysis

  • max time kernel
    614s
  • max time network
    433s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240709-en
  • resource tags

    arch:x64arch:x86image:win11-20240709-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    23-07-2024 13:55

General

  • Target

    1ba5ab55b7212ba92a9402677e30e45f12d98a98f78cdcf5864a67d6c264d053.exe

  • Size

    610KB

  • MD5

    deb8f4311fd52319f6168c10b626c808

  • SHA1

    f4807d71a1048d05815a09b74997f338e26ba9ff

  • SHA256

    1ba5ab55b7212ba92a9402677e30e45f12d98a98f78cdcf5864a67d6c264d053

  • SHA512

    ecb2c2630b03a07f20e993722ef9f55f5369d11afa21bec3dab59f65867849fb3596e4d3707730d2d75acd5d62e98afb1c06f2e7a80cd4f5946b51867bed9685

  • SSDEEP

    6144:vOr9ptAkuoip7RLPIZ3s3FjC4nj5ImCEb:AAkuoK7RLPIoAZEb

Malware Config

Extracted

Path

C:\Users\Admin\Documents\README.txt

Ransom Note
All your files have been encrypted !! Don't panic please ! We are here to help you. If you don't want to cooperate and hear your mind instead of our instructions, you will loose stupidly your files but even worse, we are able to kill your main windows process so you will never be able to restart your machine after. All your network may have been infected. If this is the case, note that the decryption software we will give you for one of the machine can be used on all the infected machines. That said, note also that if you don't pay, its all your machines that will get lost and kill. Fortunately, we think you are aware that we don't want this case to happens and you too. That's why to help you, we writed a list of instructions to follow if you want to restore your files. Once you completed all the instructions below, we will be able to give you the decryption software. We don't want to loose time or play with you, we guarantee that you will get that key if you complete your job. Don't be stupid !! To restore your files, you will need to pay a ransom within 62 hours or you will loose everything. The amount requested is 280 dollars. An amount you will need to pay in monero (XMR) which is a cryptocurrency like bitcoin (BTC). Our monero ID (adress where you need to send the money) is : 8AFtPnreZp28xoetUyKiQvVtwrov9PtEbMyvczdNZpBN45EUbEsrE8xYVp4NNqPrtxNjQwn3PbW3FG16EPYcPpKzMU78xN6 We encrypted your files with AES-256 encryption method. It's the strongest encryption method you can find in this world. Again, don't be stupid and pay the ransom. Its the only way to get all things to normal. Steps (instructions) to follow : Step 1 : Search localmonero in your browser search bar and click in the first result. Step 2 : Create an account. Step 3 : Search an offer (of a reliable vendor with lot of sales) that correspond to your payment method. Step 4 : Pay 280 dollars at once. Step 5 : Go into your account wallet and you'll see the amount of monero you have paid (it need to be 280 dollars). Step 6 : Send all the monero to our monero ID (adress) which is : 8AFtPnreZp28xoetUyKiQvVtwrov9PtEbMyvczdNZpBN45EUbEsrE8xYVp4NNqPrtxNjQwn3PbW3FG16EPYcPpKzMU78xN6 Please, copy-paste it carefully !! Verify if it correspond completly to the one in this text file before you send the money !! Once you send, it will take maximum 30 minutes to recieve. When, we will recieve the payment, we will send you the decryption software by email Please contact us at for help and negociation : [email protected] Thanks.

Signatures

  • Chaos

    Ransomware family first seen in June 2021.

  • Chaos Ransomware 2 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
  • Renames multiple (211) files with added filename extension

    This suggests ransomware activity of encrypting all the files on the system.

  • Deletes backup catalog 3 TTPs 1 IoCs

    Uses wbadmin.exe to inhibit system recovery.

  • Drops startup file 3 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.

  • Drops desktop.ini file(s) 34 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 3 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 41 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\1ba5ab55b7212ba92a9402677e30e45f12d98a98f78cdcf5864a67d6c264d053.exe
    "C:\Users\Admin\AppData\Local\Temp\1ba5ab55b7212ba92a9402677e30e45f12d98a98f78cdcf5864a67d6c264d053.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4504
    • C:\Users\Admin\AppData\Roaming\svchost.exe
      "C:\Users\Admin\AppData\Roaming\svchost.exe"
      2⤵
      • Drops startup file
      • Executes dropped EXE
      • Drops desktop.ini file(s)
      • Sets desktop wallpaper using registry
      • Modifies registry class
      • Suspicious behavior: AddClipboardFormatListener
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:4688
      • 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:1436
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          4⤵
          • Interacts with shadow copies
          PID:4904
        • C:\Windows\System32\Wbem\WMIC.exe
          wmic shadowcopy delete
          4⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:4048
      • 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:2464
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} bootstatuspolicy ignoreallfailures
          4⤵
          • Modifies boot configuration data using bcdedit
          PID:4672
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} recoveryenabled no
          4⤵
          • Modifies boot configuration data using bcdedit
          PID:3720
      • C:\Windows\System32\cmd.exe
        "C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:1616
        • C:\Windows\system32\wbadmin.exe
          wbadmin delete catalog -quiet
          4⤵
          • Deletes backup catalog
          PID:1980
      • C:\Windows\system32\NOTEPAD.EXE
        "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Roaming\README.txt
        3⤵
        • Opens file in notepad (likely ransom note)
        PID:4712
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:4536
  • C:\Windows\system32\wbengine.exe
    "C:\Windows\system32\wbengine.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:788
  • C:\Windows\System32\vdsldr.exe
    C:\Windows\System32\vdsldr.exe -Embedding
    1⤵
      PID:3832
    • C:\Windows\System32\vds.exe
      C:\Windows\System32\vds.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:4792

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      Filesize

      610KB

      MD5

      deb8f4311fd52319f6168c10b626c808

      SHA1

      f4807d71a1048d05815a09b74997f338e26ba9ff

      SHA256

      1ba5ab55b7212ba92a9402677e30e45f12d98a98f78cdcf5864a67d6c264d053

      SHA512

      ecb2c2630b03a07f20e993722ef9f55f5369d11afa21bec3dab59f65867849fb3596e4d3707730d2d75acd5d62e98afb1c06f2e7a80cd4f5946b51867bed9685

    • C:\Users\Admin\Documents\README.txt

      Filesize

      2KB

      MD5

      335d5c912d55923bd52152e68513e1f9

      SHA1

      462d753225ec89e1d08749b2060f86a81cb252a5

      SHA256

      bc4deb41c898692c1b857f029f341b3c3e743bc7a611a9d494d7d2bf89dfea4a

      SHA512

      fc7836bb80285d2ac50e7fee88033474b47041cf46d3310c9b312c806b2f7f59e49c1d220a55330188142ae5ed156e25213cd3e37957df172672b78acdd16a10

    • memory/4504-1-0x00007FF981B23000-0x00007FF981B25000-memory.dmp

      Filesize

      8KB

    • memory/4504-0-0x0000000000480000-0x000000000051E000-memory.dmp

      Filesize

      632KB

    • memory/4688-14-0x00007FF981B20000-0x00007FF9825E2000-memory.dmp

      Filesize

      10.8MB

    • memory/4688-493-0x00007FF981B20000-0x00007FF9825E2000-memory.dmp

      Filesize

      10.8MB