Analysis

  • max time kernel
    150s
  • max time network
    41s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    13-01-2023 10:49

General

  • Target

    6a0017262def9565b504d04318c59f55bea136ac3dd48862d1ae90ff6b963811.exe

  • Size

    92KB

  • MD5

    9220abc8a4ead7e58bc51c54d1c8343b

  • SHA1

    9a9c96e8d20137c0fc05e47a51f4b05383c9b08d

  • SHA256

    6a0017262def9565b504d04318c59f55bea136ac3dd48862d1ae90ff6b963811

  • SHA512

    e139809bf7f69adf3af6a61101752e3b5ca46fcd125230b6eef7b8a10b15dce8f42d31cdadbca3f27eb25681978aa7d81e04c76ea827b67af6df361c777a1768

  • SSDEEP

    1536:mBwl+KXpsqN5vlwWYyhY9S4AkVPzt8y0huqDUbubf4QJX/HthECaj6:Qw+asqN5aW/hLuJzbsuqDJ4QJ/to

Malware Config

Extracted

Path

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

Ransom Note
All your files have been encrypted! Don't worry, you can return all your files! If you want to restore them, write to the mail: buhelper@proton.me : dong@techmail.info YOUR ID dong@airmail.cc Free decryption as guarantee Before paying you can send us up to 3 files for free decryption. The total size of files must be less than 3Mb (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.
Emails

buhelper@proton.me

dong@techmail.info

dong@airmail.cc

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 3 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\6a0017262def9565b504d04318c59f55bea136ac3dd48862d1ae90ff6b963811.exe
    "C:\Users\Admin\AppData\Local\Temp\6a0017262def9565b504d04318c59f55bea136ac3dd48862d1ae90ff6b963811.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:1444
    • C:\Windows\system32\cmd.exe
      "C:\Windows\system32\cmd.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:532
      • C:\Windows\system32\mode.com
        mode con cp select=1251
        3⤵
          PID:1116
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          3⤵
          • Interacts with shadow copies
          PID:1804
      • C:\Windows\system32\cmd.exe
        "C:\Windows\system32\cmd.exe"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:760
        • C:\Windows\system32\mode.com
          mode con cp select=1251
          3⤵
            PID:656
          • C:\Windows\system32\vssadmin.exe
            vssadmin delete shadows /all /quiet
            3⤵
            • Interacts with shadow copies
            PID:744
        • 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:1780
        • 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:752
      • C:\Windows\system32\vssvc.exe
        C:\Windows\system32\vssvc.exe
        1⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:1012

      Network

      MITRE ATT&CK Matrix ATT&CK v6

      Persistence

      Registry Run Keys / Startup Folder

      1
      T1060

      Defense Evasion

      File Deletion

      2
      T1107

      Modify Registry

      2
      T1112

      Credential Access

      Credentials in Files

      1
      T1081

      Discovery

      System Information Discovery

      1
      T1082

      Collection

      Data from Local System

      1
      T1005

      Impact

      Inhibit System Recovery

      2
      T1490

      Replay Monitor

      Loading Replay Monitor...

      Downloads

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

        4KB

        MD5

        48b3b05a7316ca1eb41db19ee6fb8b4f

        SHA1

        948b3b1f0a34bfa601e316965426cdd569f85afb

        SHA256

        362186975f489cd6c85c59b083bc0f45f05d22b58f02cdc308d3a98691652953

        SHA512

        3a888eef37df34c77cc823cf7ba778081c8db5c356acdd4d82626783ef42f3e4ae8481c6fb99b6b6b1628ad6844d4defa1a9d93259a372680ed45722ce4dda8f

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

        4KB

        MD5

        48b3b05a7316ca1eb41db19ee6fb8b4f

        SHA1

        948b3b1f0a34bfa601e316965426cdd569f85afb

        SHA256

        362186975f489cd6c85c59b083bc0f45f05d22b58f02cdc308d3a98691652953

        SHA512

        3a888eef37df34c77cc823cf7ba778081c8db5c356acdd4d82626783ef42f3e4ae8481c6fb99b6b6b1628ad6844d4defa1a9d93259a372680ed45722ce4dda8f

      • memory/532-55-0x0000000000000000-mapping.dmp
      • memory/656-59-0x0000000000000000-mapping.dmp
      • memory/744-60-0x0000000000000000-mapping.dmp
      • memory/752-62-0x0000000000000000-mapping.dmp
      • memory/760-58-0x0000000000000000-mapping.dmp
      • memory/1116-56-0x0000000000000000-mapping.dmp
      • memory/1444-54-0x0000000075041000-0x0000000075043000-memory.dmp
        Filesize

        8KB

      • memory/1780-63-0x000007FEFBC61000-0x000007FEFBC63000-memory.dmp
        Filesize

        8KB

      • memory/1780-61-0x0000000000000000-mapping.dmp
      • memory/1780-81-0x000007FFFFF80000-0x000007FFFFF90000-memory.dmp
        Filesize

        64KB

      • memory/1804-57-0x0000000000000000-mapping.dmp