Analysis

  • max time kernel
    359s
  • max time network
    359s
  • platform
    windows7_x64
  • resource
    win7-20240611-en
  • resource tags

    arch:x64arch:x86image:win7-20240611-enlocale:en-usos:windows7-x64system
  • submitted
    18/06/2024, 12:59

General

  • Target

    4c0fec496abf0c29ef8358d913781b9d0c00e3e53487b72cfbf42753f0aa5176.exe

  • Size

    700KB

  • MD5

    4f6dd08aeb0beca7061a2121e2f89f32

  • SHA1

    370de5096d1b9e9ccc2e18e6145dc8170e454d2e

  • SHA256

    4c0fec496abf0c29ef8358d913781b9d0c00e3e53487b72cfbf42753f0aa5176

  • SHA512

    47a73721cdab4f15ef65172bd110f82cc9e887e2d1f333e09b11ddf1213215bcc6f8c04144a8bc7ead53f66572812f5017157dc783df275680ce45a793949c1f

  • SSDEEP

    6144:Er+LuDj/chQaT1ptXl7ml2JcT0RQTPA7b/OQi5J:6+iDjkhQ8NRJcToQTui

Malware Config

Extracted

Path

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

Ransom Note
---------------------------------------------------------- YOUR FILES HAVE BEEN ENCRYPTED BY RAPAX RANSOMWARE!!! ---------------------------------------------------------- All your important files have been encrypted and are no longer accessible. The only way to recover your data is by obtaining the decryption key. TO GET THE DECRYPTION KEY, YOU MUST PAY A RANSOM OF 5,000 DOLLARS IN BITCOIN. ---------------------------------------------------------- PAYMENT INSTRUCTION: ---------------------------------------------------------- 1. Purchase Bitcoin in Binance, BitPay, Exodus or Trust Wallet 2. Send the exact amount of 5,000 dollars in Bitcoin to the following address: Bitcoin Address: bc1qdvk0zgyswnwcck55kleepjr8qcr7yhw52sf4y4 3. After making the payment, send the transaction details to the following email address: [email protected] 4. Once the payment confirmed, you will receive the decryption key through email to restore access to your files. ---------------------------------------------------------- IMPORTANT: ---------------------------------------------------------- - Do not rename or modify the encrypted files, this will cause irreversible damage and prevent decryption. - Trying to delete the ransomware will result in permanent data loss. - If payment is not made within 72 hours, the decryption key will be permanently deleted and you will not be able to recover your files. ACT NOW TO RECOVER YOUR DATA!!! - Rapax Ransomware

Signatures

  • 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 (167) 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.

  • 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 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 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\4c0fec496abf0c29ef8358d913781b9d0c00e3e53487b72cfbf42753f0aa5176.exe
    "C:\Users\Admin\AppData\Local\Temp\4c0fec496abf0c29ef8358d913781b9d0c00e3e53487b72cfbf42753f0aa5176.exe"
    1⤵
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2412
    • 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:2680
      • 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:2880
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          4⤵
          • Interacts with shadow copies
          PID:2688
        • C:\Windows\System32\Wbem\WMIC.exe
          wmic shadowcopy delete
          4⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:1968
      • 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:2312
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} bootstatuspolicy ignoreallfailures
          4⤵
          • Modifies boot configuration data using bcdedit
          PID:2256
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} recoveryenabled no
          4⤵
          • Modifies boot configuration data using bcdedit
          PID:2264
      • C:\Windows\System32\cmd.exe
        "C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:2524
        • C:\Windows\system32\wbadmin.exe
          wbadmin delete catalog -quiet
          4⤵
          • Deletes backup catalog
          PID:1312
      • C:\Windows\system32\NOTEPAD.EXE
        "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Roaming\instruction.txt
        3⤵
        • Opens file in notepad (likely ransom note)
        PID:600
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:2932
  • C:\Windows\system32\wbengine.exe
    "C:\Windows\system32\wbengine.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:2820
  • C:\Windows\System32\vdsldr.exe
    C:\Windows\System32\vdsldr.exe -Embedding
    1⤵
      PID:2916
    • C:\Windows\System32\vds.exe
      C:\Windows\System32\vds.exe
      1⤵
        PID:2016

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

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

        Filesize

        1KB

        MD5

        f13ded4fcd58941a41ae202bdb335caa

        SHA1

        f49bf43765d44ab7925a26e79df4b854c46404c0

        SHA256

        a8ee4ee9f1144077af252f2cfec7cdb048d00988402fb0a1c35629a9a52b8980

        SHA512

        cbb1bd405890509651035ba924cdc8ff0c17420e35cae23760ad6ed4e201d64c1bfa8360d0312dfa948a81a4ac7f43aa779d1f78d6e5d2e4c7c3850447a0b09d

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

        Filesize

        700KB

        MD5

        4f6dd08aeb0beca7061a2121e2f89f32

        SHA1

        370de5096d1b9e9ccc2e18e6145dc8170e454d2e

        SHA256

        4c0fec496abf0c29ef8358d913781b9d0c00e3e53487b72cfbf42753f0aa5176

        SHA512

        47a73721cdab4f15ef65172bd110f82cc9e887e2d1f333e09b11ddf1213215bcc6f8c04144a8bc7ead53f66572812f5017157dc783df275680ce45a793949c1f

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

        Filesize

        1B

        MD5

        d1457b72c3fb323a2671125aef3eab5d

        SHA1

        5bab61eb53176449e25c2c82f172b82cb13ffb9d

        SHA256

        8a8de823d5ed3e12746a62ef169bcf372be0ca44f0a1236abc35df05d96928e1

        SHA512

        ca63c07ad35d8c9fb0c92d6146759b122d4ec5d3f67ebe2f30ddb69f9e6c9fd3bf31a5e408b08f1d4d9cd68120cced9e57f010bef3cde97653fed5470da7d1a0

      • memory/2412-0-0x000007FEF5E63000-0x000007FEF5E64000-memory.dmp

        Filesize

        4KB

      • memory/2412-1-0x00000000002E0000-0x0000000000394000-memory.dmp

        Filesize

        720KB

      • memory/2412-3-0x000007FEF5E60000-0x000007FEF684C000-memory.dmp

        Filesize

        9.9MB

      • memory/2412-9-0x000007FEF5E60000-0x000007FEF684C000-memory.dmp

        Filesize

        9.9MB

      • memory/2680-8-0x0000000000F10000-0x0000000000FC4000-memory.dmp

        Filesize

        720KB

      • memory/2680-10-0x000007FEF5E60000-0x000007FEF684C000-memory.dmp

        Filesize

        9.9MB

      • memory/2680-11-0x000007FEF5E60000-0x000007FEF684C000-memory.dmp

        Filesize

        9.9MB

      • memory/2680-865-0x000007FEF5E60000-0x000007FEF684C000-memory.dmp

        Filesize

        9.9MB