Analysis

  • max time kernel
    4294210s
  • max time network
    120s
  • platform
    windows7_x64
  • resource
    win7-20220223-en
  • submitted
    05-03-2022 14:39

General

  • Target

    fff721f46e073feec8f44387fdd1bb3cada4485925c1999a59745144e1c0b557.exe

  • Size

    92KB

  • MD5

    d03756d3af305204119c3d9b7229ca9a

  • SHA1

    1d694c745ef1d6132e32ae3e66c6dd4644fe736b

  • SHA256

    fff721f46e073feec8f44387fdd1bb3cada4485925c1999a59745144e1c0b557

  • SHA512

    040563e93e8fd0bfd0295c7e97e7a71c2d24e89750700889fb392c49bd2011bfaa069ea23f5e8bdbfed7cb19f8a894881f7c415a39ee975382f2b5fc1d5e511c

Malware Config

Extracted

Path

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

Ransom Note
YOUR FILES ARE ENCRYPTED Don't worry,you can return all your files! If you want to restore them, follow this link: email [email protected] YOUR ID If you have not been answered via the link within 12 hours, write to us by e-mail: [email protected] 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 1 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\fff721f46e073feec8f44387fdd1bb3cada4485925c1999a59745144e1c0b557.exe
    "C:\Users\Admin\AppData\Local\Temp\fff721f46e073feec8f44387fdd1bb3cada4485925c1999a59745144e1c0b557.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:1208
    • C:\Windows\system32\cmd.exe
      "C:\Windows\system32\cmd.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1108
      • C:\Windows\system32\mode.com
        mode con cp select=1251
        3⤵
          PID:1536
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          3⤵
          • Interacts with shadow copies
          PID:632
      • C:\Windows\system32\cmd.exe
        "C:\Windows\system32\cmd.exe"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:2040
        • C:\Windows\system32\mode.com
          mode con cp select=1251
          3⤵
            PID:1724
          • C:\Windows\system32\vssadmin.exe
            vssadmin delete shadows /all /quiet
            3⤵
            • Interacts with shadow copies
            PID:1116
        • 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:1972
        • 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:2036
      • C:\Windows\system32\vssvc.exe
        C:\Windows\system32\vssvc.exe
        1⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:428

      Network

      MITRE ATT&CK Enterprise v6

      Replay Monitor

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      Downloads

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

        MD5

        8f623854c394f8d6a569fa012e1dbde6

        SHA1

        85ff6b043d35604c6a3bff9100c834ac978cf756

        SHA256

        3af32f8f4fb98de7d10e8426042e38c3401fe794c688210fc01a7c764ca9ab84

        SHA512

        af935247aed161816a3c035ed9708d1a64755f0f40632f9bd635527a9de9c0eb8a0f932389b0eb98f7e65dda4f432f7280ba8909b0a88e44c0cdfe030495a4f5

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

        MD5

        8f623854c394f8d6a569fa012e1dbde6

        SHA1

        85ff6b043d35604c6a3bff9100c834ac978cf756

        SHA256

        3af32f8f4fb98de7d10e8426042e38c3401fe794c688210fc01a7c764ca9ab84

        SHA512

        af935247aed161816a3c035ed9708d1a64755f0f40632f9bd635527a9de9c0eb8a0f932389b0eb98f7e65dda4f432f7280ba8909b0a88e44c0cdfe030495a4f5

      • memory/1208-54-0x0000000075CC1000-0x0000000075CC3000-memory.dmp

        Filesize

        8KB

      • memory/1972-55-0x000007FEFBAF1000-0x000007FEFBAF3000-memory.dmp

        Filesize

        8KB