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Analysis

  • max time kernel
    119s
  • max time network
    16s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    25/03/2025, 12:55

General

  • Target

    34c392448fc0818278cd19bb0841adf573e967be8a0f73bb42bb367a5835b6ea.exe

  • Size

    92KB

  • MD5

    21c2b2d0bfc15b3d4bc72263f9db5547

  • SHA1

    9f65f98ae2b418425a1d98b8d86bef88edab4d7c

  • SHA256

    34c392448fc0818278cd19bb0841adf573e967be8a0f73bb42bb367a5835b6ea

  • SHA512

    aeeb64dc1130f6e5ccf6ab9abedf01e2a59e149f4897a44b02c32f816ddd1d1698a59447f7ce03dab966972f7714977b49f4b7e0fd258b0bedd936ac1926060a

  • SSDEEP

    1536:lBwl+KXpsqN5vlwWYyhY9S4AE4SLlaSXrgKcQ48bcWHpOZ2yr+e72eIGZZyb1j:vw+asqN5aW/hL6dhamQoBU4yTi17j

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 8985B07A 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 (314) 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\34c392448fc0818278cd19bb0841adf573e967be8a0f73bb42bb367a5835b6ea.exe
    C:\Users\Admin\AppData\Local\Temp\34c392448fc0818278cd19bb0841adf573e967be8a0f73bb42bb367a5835b6ea.exe bcdedit /set shutdown /r /f /t 2
    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:2068
    • 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:2860
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          3⤵
          • Interacts with shadow copies
          PID:444
      • C:\Windows\system32\cmd.exe
        "C:\Windows\system32\cmd.exe"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:3884
        • C:\Windows\system32\mode.com
          mode con cp select=1251
          3⤵
            PID:3432
          • C:\Windows\system32\vssadmin.exe
            vssadmin delete shadows /all /quiet
            3⤵
            • Interacts with shadow copies
            PID:208
        • 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:2808
        • 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:1764
      • C:\Windows\system32\vssvc.exe
        C:\Windows\system32\vssvc.exe
        1⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:2796

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\MSOCache\All Users\{90140000-0011-0000-0000-0000000FF1CE}-C\OWOW64WW.cab.id-8985B07A.[[email protected]].harma

        Filesize

        23.5MB

        MD5

        90b0a7d9d5b7276ec320bec08609d2a3

        SHA1

        6fdfc71298b659f9bd46b620cba9ccb4d7b18b14

        SHA256

        8780b4b3279bcb46a8bcda1613be591487273c22389b9f100674c6854270d93e

        SHA512

        7b35533df265d87a91bbbff887c8dd7c8b1947573c28ebd205354bbcca661792d1753a31201ec90cc9ca062a8452c83590af8ea4c19b0273ad774f4b457eec50

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

        Filesize

        13KB

        MD5

        16d415d401c7388b22140890695c2bff

        SHA1

        8a5f4b9625e8fb7d80837fd0adb36059d8a6a1b9

        SHA256

        81b57f95919b43a74e0a73d621eba05e0976bc0be6b00ba3c1ebab9e69dc3b1f

        SHA512

        e4a8bccce9578a4ba358af59157d80ad8b89e998f9a7ba5f893656f3b550150f1e057d86b9313c5d187db70fb2c3aefc4fb0419ca28896bcebe1bbdf77679b2c

      • memory/1764-20357-0x000007FFFFF80000-0x000007FFFFF90000-memory.dmp

        Filesize

        64KB