Analysis

  • max time kernel
    4294211s
  • max time network
    124s
  • platform
    windows7_x64
  • resource
    win7-20220223-en
  • 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 887A072A 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.

  • 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\3ec912205501188497ccd927e3b328c554b8f20f2c26e4b5d19a32ecbb743cb1.exe
    "C:\Users\Admin\AppData\Local\Temp\3ec912205501188497ccd927e3b328c554b8f20f2c26e4b5d19a32ecbb743cb1.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
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:1940
    • C:\Windows\system32\cmd.exe
      "C:\Windows\system32\cmd.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1996
      • C:\Windows\system32\mode.com
        mode con cp select=1251
        3⤵
          PID:1912
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          3⤵
          • Interacts with shadow copies
          PID:108
      • C:\Windows\system32\cmd.exe
        "C:\Windows\system32\cmd.exe"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1512
        • C:\Windows\system32\mode.com
          mode con cp select=1251
          3⤵
            PID:1884
          • C:\Windows\system32\vssadmin.exe
            vssadmin delete shadows /all /quiet
            3⤵
            • Interacts with shadow copies
            PID:1748
        • 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:1760
        • 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:1936
      • C:\Windows\system32\vssvc.exe
        C:\Windows\system32\vssvc.exe
        1⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:1232

      Network

      MITRE ATT&CK Enterprise v6

      Replay Monitor

      Loading Replay Monitor...

      Downloads

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

        MD5

        232dd121799398cd6687ab5265a6b35e

        SHA1

        ce3d11539650e72e7db81164d2b00233fb4dc7ac

        SHA256

        57e190da3e893a66eb528a23a98e4fc79ae410aeee1184e71f5ed11f1f5371de

        SHA512

        1c5c5c30e9fa127f3d8737c93ba643eeaaab77d1472ee27c9f065bd3406385b00aa880c9858c772e10cb3cfc624cf3d874f53e8df1e66a438e55b640de9e31a0

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

        MD5

        232dd121799398cd6687ab5265a6b35e

        SHA1

        ce3d11539650e72e7db81164d2b00233fb4dc7ac

        SHA256

        57e190da3e893a66eb528a23a98e4fc79ae410aeee1184e71f5ed11f1f5371de

        SHA512

        1c5c5c30e9fa127f3d8737c93ba643eeaaab77d1472ee27c9f065bd3406385b00aa880c9858c772e10cb3cfc624cf3d874f53e8df1e66a438e55b640de9e31a0

      • memory/1936-55-0x000007FEFC4D1000-0x000007FEFC4D3000-memory.dmp

        Filesize

        8KB

      • memory/1940-54-0x0000000076271000-0x0000000076273000-memory.dmp

        Filesize

        8KB