Analysis

  • max time kernel
    120s
  • max time network
    121s
  • platform
    windows7_x64
  • resource
    win7-20240729-en
  • resource tags

    arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
  • submitted
    22/08/2024, 18:24

General

  • Target

    2024-08-22_87dea890e3f1b49e1dc9b8ef48e5b0be_wannacry.exe

  • Size

    245KB

  • MD5

    87dea890e3f1b49e1dc9b8ef48e5b0be

  • SHA1

    78c3b4df2418bc13e610ea4f5ddfb9cfc0e77b28

  • SHA256

    013f9aa3b7ffc444a4636ee0ee117ddf0ff005e231dd1cece33ab20e67d9c63b

  • SHA512

    7a65e40f28ad40c51e757e9c41f17954b52c29d704962565820652c45abe1ffc4b524f7951df55c2ed31e12956aab3e0caa9af04364f59cad83fee3bd272d573

  • SSDEEP

    6144:BAHLSHCsulgv6ZZJJchBRsZVOB45r9iTIbdiLEus:SrSLNv652bbB428bgY1

Malware Config

Extracted

Path

C:\Users\Admin\Documents\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: bc1qlnzcep4l4ac0ttdrq7awxev9ehu465f2vpt9x0

Signatures

  • Chaos

    Ransomware family first seen in June 2021.

  • Chaos Ransomware 3 IoCs
  • Looks for VirtualBox Guest Additions in registry 2 TTPs 2 IoCs
  • Looks for VMWare Tools registry key 2 TTPs 2 IoCs
  • Checks BIOS information in registry 2 TTPs 4 IoCs

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

  • Drops startup file 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 2 IoCs
  • Drops desktop.ini file(s) 6 IoCs
  • Maps connected drives based on registry 3 TTPs 4 IoCs

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

  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-08-22_87dea890e3f1b49e1dc9b8ef48e5b0be_wannacry.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-08-22_87dea890e3f1b49e1dc9b8ef48e5b0be_wannacry.exe"
    1⤵
    • Looks for VirtualBox Guest Additions in registry
    • Looks for VMWare Tools registry key
    • Checks BIOS information in registry
    • Loads dropped DLL
    • Maps connected drives based on registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2124
    • C:\Users\Admin\AppData\Roaming\svchost.exe
      "C:\Users\Admin\AppData\Roaming\svchost.exe"
      2⤵
      • Looks for VirtualBox Guest Additions in registry
      • Looks for VMWare Tools registry key
      • Checks BIOS information in registry
      • Drops startup file
      • Executes dropped EXE
      • Loads dropped DLL
      • Drops desktop.ini file(s)
      • Maps connected drives based on registry
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1804
      • C:\Windows\system32\WerFault.exe
        C:\Windows\system32\WerFault.exe -u -p 1804 -s 792
        3⤵
          PID:1112

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

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          Downloads

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

            Filesize

            245KB

            MD5

            87dea890e3f1b49e1dc9b8ef48e5b0be

            SHA1

            78c3b4df2418bc13e610ea4f5ddfb9cfc0e77b28

            SHA256

            013f9aa3b7ffc444a4636ee0ee117ddf0ff005e231dd1cece33ab20e67d9c63b

            SHA512

            7a65e40f28ad40c51e757e9c41f17954b52c29d704962565820652c45abe1ffc4b524f7951df55c2ed31e12956aab3e0caa9af04364f59cad83fee3bd272d573

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

            Filesize

            964B

            MD5

            4217b8b83ce3c3f70029a056546f8fd0

            SHA1

            487cdb5733d073a0427418888e8f7070fe782a03

            SHA256

            7d767e907be373c680d1f7884d779588eb643bebb3f27bf3b5ed4864aa4d8121

            SHA512

            2a58c99fa52f99c276e27eb98aef2ce1205f16d1e37b7e87eb69e9ecda22b578195a43f1a7f70fead6ba70421abf2f85c917551c191536eaf1f3011d3d24f740

          • \Users\Admin\AppData\Local\Temp\Runtime.MSIL.1.0.0.0\sByte.dll

            Filesize

            39KB

            MD5

            d80d1b6d9a6d5986fa47f6f8487030e1

            SHA1

            8f5773bf9eca43b079c1766b2e9f44cc90bd9215

            SHA256

            446128f1712da8064d0197376184315cb529ed26ed9122f7b171bb208e22c0c3

            SHA512

            9fcf0105c2c9ee81c526d41633d93579bb8e2837989d77fb4a6523440415ec2d7fa46ac9ae4e55ecebd99126837817ac308cc079475de02667b21727a43d74cc

          • memory/1804-17-0x000007FEF6060000-0x000007FEF6A4C000-memory.dmp

            Filesize

            9.9MB

          • memory/1804-13-0x0000000001340000-0x0000000001384000-memory.dmp

            Filesize

            272KB

          • memory/1804-16-0x000007FEF6060000-0x000007FEF6A4C000-memory.dmp

            Filesize

            9.9MB

          • memory/1804-132-0x000007FEF6060000-0x000007FEF6A4C000-memory.dmp

            Filesize

            9.9MB

          • memory/2124-3-0x000007FEF6060000-0x000007FEF6A4C000-memory.dmp

            Filesize

            9.9MB

          • memory/2124-7-0x0000000000180000-0x0000000000188000-memory.dmp

            Filesize

            32KB

          • memory/2124-2-0x0000000000150000-0x000000000015C000-memory.dmp

            Filesize

            48KB

          • memory/2124-18-0x000007FEF6060000-0x000007FEF6A4C000-memory.dmp

            Filesize

            9.9MB

          • memory/2124-0-0x000007FEF6063000-0x000007FEF6064000-memory.dmp

            Filesize

            4KB

          • memory/2124-1-0x0000000000830000-0x0000000000874000-memory.dmp

            Filesize

            272KB