Analysis

  • max time kernel
    4294210s
  • max time network
    123s
  • platform
    windows7_x64
  • resource
    win7-20220223-en
  • submitted
    06-03-2022 02:14

General

  • Target

    08f230eb649a5bf7e75066f905843fb71c7cafd15cd08b44c8f1b08f90e23fe6.exe

  • Size

    92KB

  • MD5

    1896946f89613ba6045d36e09aa7760f

  • SHA1

    efc69f195ed0ace8d1c10263f88cd8f4f753cb40

  • SHA256

    08f230eb649a5bf7e75066f905843fb71c7cafd15cd08b44c8f1b08f90e23fe6

  • SHA512

    75a67fb5c8b30a0afc901dce706a4d50e6c3e08f1d1c2d3691bed8b6ecee52ea0fd56144a254de7883877827e4b6dba16dcc86b14b4609f308735252af163a85

Malware Config

Extracted

Path

C:\ProgramData\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 E2912D5E 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 5 files for free decryption. The total size of files must be less than 10Mb (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.

  • Modifies extensions of user files 2 IoCs

    Ransomware generally changes the extension on encrypted files.

  • 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.

  • 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

Processes

  • C:\Users\Admin\AppData\Local\Temp\08f230eb649a5bf7e75066f905843fb71c7cafd15cd08b44c8f1b08f90e23fe6.exe
    "C:\Users\Admin\AppData\Local\Temp\08f230eb649a5bf7e75066f905843fb71c7cafd15cd08b44c8f1b08f90e23fe6.exe"
    1⤵
    • Modifies extensions of user files
    • 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:1620
    • C:\Windows\system32\cmd.exe
      "C:\Windows\system32\cmd.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1592
      • C:\Windows\system32\mode.com
        mode con cp select=1251
        3⤵
          PID:1960
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          3⤵
          • Interacts with shadow copies
          PID:1684
      • C:\Windows\system32\cmd.exe
        "C:\Windows\system32\cmd.exe"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1508
        • C:\Windows\system32\mode.com
          mode con cp select=1251
          3⤵
            PID:576
          • C:\Windows\system32\vssadmin.exe
            vssadmin delete shadows /all /quiet
            3⤵
            • Interacts with shadow copies
            PID:1360
        • 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:1604
        • 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:1956
      • C:\Windows\system32\vssvc.exe
        C:\Windows\system32\vssvc.exe
        1⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:272

      Network

      MITRE ATT&CK Enterprise v6

      Replay Monitor

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      Downloads

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

        MD5

        80f1b262fa15e0c39f508176a608749d

        SHA1

        0e00fc70337f3d364dcfc501d0d6f5b29ce0dd10

        SHA256

        8cee60d6f7fcb9967ebeec7850edca910c12b645fa5242b4c3f1454e39f1138c

        SHA512

        14ed1a5351351df16b916c2963a581e34847cd81c5aad589045e524a993784a58cf1595a23099a236066745013929beb133d4ca5b6b79c2cce509c47210ac27d

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

        MD5

        80f1b262fa15e0c39f508176a608749d

        SHA1

        0e00fc70337f3d364dcfc501d0d6f5b29ce0dd10

        SHA256

        8cee60d6f7fcb9967ebeec7850edca910c12b645fa5242b4c3f1454e39f1138c

        SHA512

        14ed1a5351351df16b916c2963a581e34847cd81c5aad589045e524a993784a58cf1595a23099a236066745013929beb133d4ca5b6b79c2cce509c47210ac27d

      • memory/1620-54-0x0000000075AC1000-0x0000000075AC3000-memory.dmp

        Filesize

        8KB