Analysis

  • max time kernel
    151s
  • max time network
    148s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220112
  • submitted
    06-03-2022 01:02

General

  • Target

    3ec912205501188497ccd927e3b328c554b8f20f2c26e4b5d19a32ecbb743cb1.exe

  • Size

    138KB

  • MD5

    d8715e4d847cfad972320eac25f00b61

  • SHA1

    d9adbc9f016e6d97253378ae6bf383c3dad25841

  • SHA256

    3ec912205501188497ccd927e3b328c554b8f20f2c26e4b5d19a32ecbb743cb1

  • SHA512

    e9863b9a3bf5de494e9b0d4200be30746614d4d4d29e87eba2fd316bf4c437f749735f267f5edfd8b66506acd2d4d767f6defc5f21e659a9c4a2dba8fa24cf65

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 CB74456B 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.

  • Deletes shadow copies 2 TTPs

    Ransomware often targets backup files to inhibit system recovery.

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Drops startup file 5 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 3 IoCs
  • Drops desktop.ini file(s) 64 IoCs
  • Drops file in System32 directory 2 IoCs
  • Drops file in Program Files directory 64 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Interacts with shadow copies 2 TTPs 2 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 16 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\3ec912205501188497ccd927e3b328c554b8f20f2c26e4b5d19a32ecbb743cb1.exe
    "C:\Users\Admin\AppData\Local\Temp\3ec912205501188497ccd927e3b328c554b8f20f2c26e4b5d19a32ecbb743cb1.exe"
    1⤵
    • Checks computer location settings
    • 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
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:1784
    • C:\Windows\system32\cmd.exe
      "C:\Windows\system32\cmd.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4084
      • C:\Windows\system32\mode.com
        mode con cp select=1251
        3⤵
          PID:3844
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          3⤵
          • Interacts with shadow copies
          PID:2012
      • C:\Windows\system32\cmd.exe
        "C:\Windows\system32\cmd.exe"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:4092
        • C:\Windows\system32\mode.com
          mode con cp select=1251
          3⤵
            PID:1932
          • C:\Windows\system32\vssadmin.exe
            vssadmin delete shadows /all /quiet
            3⤵
            • Interacts with shadow copies
            PID:3924
        • C:\Windows\System32\mshta.exe
          "C:\Windows\System32\mshta.exe" "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Info.hta"
          2⤵
            PID:2436
          • C:\Windows\System32\mshta.exe
            "C:\Windows\System32\mshta.exe" "C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Startup\Info.hta"
            2⤵
              PID:1256
          • C:\Windows\system32\vssvc.exe
            C:\Windows\system32\vssvc.exe
            1⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:3836

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

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          Downloads

          • C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Startup\Info.hta

            MD5

            691811de97e1e4f1cd91be5157d9fc85

            SHA1

            8c51d764d9e78be65897dd65bbfccf576d56a003

            SHA256

            91e4a1b9e7ff9ebc28c4316c4dfcc5c83e6d076773261c291e0a62a0e1cac613

            SHA512

            ae5822460243a2d6cd12c4daca36290773ca5267563bc9d63bfb28b8058a1b91fadea77f202a6ac0cf1f15748a545588fbefc941fa0da63530a87e6cbe10622e

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

            MD5

            691811de97e1e4f1cd91be5157d9fc85

            SHA1

            8c51d764d9e78be65897dd65bbfccf576d56a003

            SHA256

            91e4a1b9e7ff9ebc28c4316c4dfcc5c83e6d076773261c291e0a62a0e1cac613

            SHA512

            ae5822460243a2d6cd12c4daca36290773ca5267563bc9d63bfb28b8058a1b91fadea77f202a6ac0cf1f15748a545588fbefc941fa0da63530a87e6cbe10622e