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Analysis

  • max time kernel
    149s
  • max time network
    122s
  • platform
    windows7_x64
  • resource
    win7-20240215-en
  • resource tags

    arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system
  • submitted
    11/06/2024, 14:40

General

  • Target

    2024-06-11_f0ab6743349f3ca9efc882a705ae09e8_crysis_dharma.exe

  • Size

    92KB

  • MD5

    f0ab6743349f3ca9efc882a705ae09e8

  • SHA1

    826e22f83d4ca23288dcf37994446c5a090edaf6

  • SHA256

    0d341fcd44494bfa646ca60d3a88d7f8b42f7a7702c36fc7901efe7dd0535da8

  • SHA512

    1ad9c28afbe776699c1dc83041f5a2084ccee197268eb073d57effc123ba2c1ec51e21da829c41a6a9b71034101e1c23df072766c16c72dcccd40755720d57d2

  • SSDEEP

    1536:GBwl+KXpsqN5vlwWYyhZ9S4Auj5+JQHukINIrL3UxHcLL0zbTAw7Nh:ww+asqN5aW/hSI/H5INInUxH4IzP1J

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 3 TTPs

    Ransomware often targets backup files to inhibit system recovery.

  • Renames multiple (311) files with added filename extension

    This suggests ransomware activity of encrypting all the files on the system.

  • 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).

  • 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
  • Uses Volume Shadow Copy service COM API

    The Volume Shadow Copy service is used to manage backups/snapshots.

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-06-11_f0ab6743349f3ca9efc882a705ae09e8_crysis_dharma.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-11_f0ab6743349f3ca9efc882a705ae09e8_crysis_dharma.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:2620
    • C:\Windows\system32\cmd.exe
      "C:\Windows\system32\cmd.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2036
      • C:\Windows\system32\mode.com
        mode con cp select=1251
        3⤵
          PID:2744
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          3⤵
          • Interacts with shadow copies
          PID:2556
      • C:\Windows\system32\cmd.exe
        "C:\Windows\system32\cmd.exe"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:3844
        • C:\Windows\system32\mode.com
          mode con cp select=1251
          3⤵
            PID:1620
          • C:\Windows\system32\vssadmin.exe
            vssadmin delete shadows /all /quiet
            3⤵
            • Interacts with shadow copies
            PID:2708
        • 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:3776
        • 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:2100
      • C:\Windows\system32\vssvc.exe
        C:\Windows\system32\vssvc.exe
        1⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:2740

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

      • C:\MSOCache\All Users\{90140000-0011-0000-0000-0000000FF1CE}-C\OWOW64WW.cab.id-9B431273.[[email protected]].ROGER

        Filesize

        23.5MB

        MD5

        dd2fb480a3a0146c75dc40037e888b9f

        SHA1

        4524ba72136892a579de1d46c87a213c96940492

        SHA256

        f9aec25049aebe0aec53b50229839d0329967c448b52b510a4e75cb9474a0669

        SHA512

        9ace84a7141a21984293945829cc125703850bde206a475342c481b1dc364ff4bf1e2ba29bc0b2986e12811cea07d753b286e4f8d04fdb0ad5776e52180c7c0e

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

        Filesize

        7KB

        MD5

        7c5a870265ea6c6dc19b09e954d25532

        SHA1

        e0bdda2d378f7ba2f509e74f52e2321d11db790b

        SHA256

        764f39325035a29739fee39a3cde8c36eec41a1d3fcb6e0e8ec7718f9452b185

        SHA512

        e4791a468976b4cabec291254f168ccb96c02d01f04b949148c40429b2c72504687227ba85c6e48c04dea64399c75667e0e3668d46530b92c4d068bdfd34d4f1