Analysis

  • max time kernel
    149s
  • max time network
    122s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    19-11-2024 23:52

General

  • Target

    Rack/666a3daa2ef51e1b14e0abeddecce8ba836a27cc37781899c88a3b6f328d17e6.exe

  • Size

    323KB

  • MD5

    dfe0390e501faf0de5ba5093304e8ac2

  • SHA1

    266ca584a811b8ccd4d513a0b007d206575a60a9

  • SHA256

    666a3daa2ef51e1b14e0abeddecce8ba836a27cc37781899c88a3b6f328d17e6

  • SHA512

    0423b083ada2a6c201cf777d14e74e73d9484c9f34f8681e86e4265e80ee50a5c454c55c5d6e9dbc858abeb97c28bd51d44fe4dd113a7a54ebe6a15241de7373

  • SSDEEP

    6144:7/nQNudGK9+oNitAoYdbmTE/T69Jozt6RshzlaydO5YtPIrm:7/nqudGPoNitvyaQm90tJJ/aYD

Malware Config

Extracted

Path

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Info.hta

Ransom Note
All your files have been encrypted! All your files have been encrypted due to a security problem with your PC. If you want to restore them, write us to the e-mail [email protected] Write this ID in the title of your message 9578C0C4 In case of no answer in 24 hours write us to theese e-mails: [email protected] You have to pay for decryption in Bitcoins. The price depends on how fast you write to us. After payment we will send you the decryption tool that will decrypt all your files. Free decryption as guarantee Before paying you can send us up to 1 file for free decryption. The total size of files must be less than 1Mb (non archived), and files should not contain valuable information. (databases,backups, large excel sheets, etc.) How to obtain Bitcoins The easiest way to buy bitcoins is LocalBitcoins site. You have to register, click 'Buy bitcoins', and select the seller by payment method and price. https://localbitcoins.com/buy_bitcoins Also you can find other places to buy Bitcoins and beginners guide here: http://www.coindesk.com/information/how-can-i-buy-bitcoins/ Attention! Do not rename encrypted files. Do not try to decrypt your data using third party software, it may cause permanent data loss. Decryption of your files with the help of third parties may cause increased price (they add their fee to our) or you can become a victim of a scam.

Signatures

  • Dharma

    Dharma is a ransomware that uses security software installation to hide malicious activities.

  • Dharma family
  • Deletes shadow copies 3 TTPs

    Ransomware often targets backup files to inhibit system recovery.

  • Renames multiple (315) files with added filename extension

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

  • Credentials from Password Stores: Windows Credential Manager 1 TTPs

    Suspicious access to Credentials History.

  • Drops startup file 5 IoCs
  • Reads user/profile data of web browsers 3 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Adds Run key to start application 2 TTPs 3 IoCs
  • Drops desktop.ini file(s) 64 IoCs
  • Drops file in System32 directory 2 IoCs
  • Drops file in Program Files directory 64 IoCs
  • Browser Information Discovery 1 TTPs

    Enumerate browser information.

  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Interacts with shadow copies 3 TTPs 2 IoCs

    Shadow copies are often targeted by ransomware to inhibit system recovery.

  • Modifies Internet Explorer settings 1 TTPs 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 28 IoCs
  • 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\Rack\666a3daa2ef51e1b14e0abeddecce8ba836a27cc37781899c88a3b6f328d17e6.exe
    "C:\Users\Admin\AppData\Local\Temp\Rack\666a3daa2ef51e1b14e0abeddecce8ba836a27cc37781899c88a3b6f328d17e6.exe"
    1⤵
    • Drops startup file
    • Adds Run key to start application
    • Drops desktop.ini file(s)
    • Drops file in System32 directory
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:2104
    • C:\Windows\system32\cmd.exe
      "C:\Windows\system32\cmd.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2968
      • C:\Windows\system32\mode.com
        mode con cp select=1251
        3⤵
          PID:2804
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          3⤵
          • Interacts with shadow copies
          PID:2808
      • C:\Windows\system32\cmd.exe
        "C:\Windows\system32\cmd.exe"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:2552
        • C:\Windows\system32\mode.com
          mode con cp select=1251
          3⤵
            PID:904
          • C:\Windows\system32\vssadmin.exe
            vssadmin delete shadows /all /quiet
            3⤵
            • Interacts with shadow copies
            PID:872
        • C:\Windows\System32\mshta.exe
          "C:\Windows\System32\mshta.exe" "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Info.hta"
          2⤵
          • Modifies Internet Explorer settings
          PID:972
        • C:\Windows\System32\mshta.exe
          "C:\Windows\System32\mshta.exe" "C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Startup\Info.hta"
          2⤵
          • Modifies Internet Explorer settings
          PID:1480
      • C:\Windows\system32\vssvc.exe
        C:\Windows\system32\vssvc.exe
        1⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:2800

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Info.hta

        Filesize

        13KB

        MD5

        a357198cc4406cea567ea4e052e3e67f

        SHA1

        cfe7a20242b3b86d7f3f2e77fb74d2da0df3630c

        SHA256

        6c29cb452a84ed3d3a62f94de4ecdbeef69262d2fa39c8b7fe3ec357aa675cc7

        SHA512

        77cf6b6bf2c3c5aea0e8633fe6144a91688a78db6e051a095de1b97e37ae10e90f7e644dc0c69fe3031b32d14fe6a56c0952d81fc22317002a3d1feb13531fb5

      • memory/972-20301-0x000007FFFFF90000-0x000007FFFFFA0000-memory.dmp

        Filesize

        64KB

      • memory/2104-1-0x0000000002580000-0x0000000002680000-memory.dmp

        Filesize

        1024KB

      • memory/2104-3-0x0000000000400000-0x0000000000419000-memory.dmp

        Filesize

        100KB

      • memory/2104-78-0x0000000000400000-0x0000000002484000-memory.dmp

        Filesize

        32.5MB

      • memory/2104-3734-0x0000000002580000-0x0000000002680000-memory.dmp

        Filesize

        1024KB

      • memory/2104-4531-0x0000000000400000-0x0000000000419000-memory.dmp

        Filesize

        100KB