Analysis

  • max time kernel
    117s
  • max time network
    122s
  • platform
    windows7_x64
  • resource
    win7-en-20211208
  • submitted
    05-03-2022 21:30

General

  • Target

    cb141f7346b20cf67b80b5f05ec27fffba0e83cc74b33c091a01c96f27a2a514.exe

  • Size

    3.9MB

  • MD5

    be9f805802cbb981a2985a642db21f0b

  • SHA1

    fcb7cf1d4026ca4cc9a6c040404da65f1d9b7a63

  • SHA256

    cb141f7346b20cf67b80b5f05ec27fffba0e83cc74b33c091a01c96f27a2a514

  • SHA512

    a4b544f58cc6d964994a60c17e44c584ffe027a73be85d21207bb85fccbcb3fb29d2269e8a5eeb2cf571c17f3a540aed79ad83e5fb170bc9d1526b5a04ced385

Malware Config

Extracted

Path

C:\MSOCache\All Users\{90140000-0011-0000-0000-0000000FF1CE}-C\HOW TO RESTORE YOUR FILES.TXT

Ransom Note
Hello! All your files are encrypted, write to me if you want to return your files - I can do it very quickly! Contact me by email: [email protected] or [email protected] [email protected] The subject line must contain an encryption extension or the name of your company! Do not rename encrypted files, you may lose them forever. You may be a victim of fraud. Free decryption as a guarantee. Send us up to 3 files for free decryption. The total file size should be no more than 1 MB! (not in the archive), and the files should not contain valuable information. (databases, backups, large Excel spreadsheets, etc.) !!! Do not turn off or restart the NAS equipment. This will lead to data loss !!! To contact us, we recommend that you create an email address at protonmail.com or tutanota.com Because gmail and other public email programs can block our messages!

Signatures

  • Deletes shadow copies 2 TTPs

    Ransomware often targets backup files to inhibit system recovery.

  • Modifies extensions of user files 22 IoCs

    Ransomware generally changes the extension on encrypted files.

  • Drops startup file 1 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Drops file in Program Files directory 64 IoCs
  • Launches sc.exe

    Sc.exe is a Windows utlilty to control services on the system.

  • Interacts with shadow copies 2 TTPs 1 IoCs

    Shadow copies are often targeted by ransomware to inhibit system recovery.

  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 28 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\cb141f7346b20cf67b80b5f05ec27fffba0e83cc74b33c091a01c96f27a2a514.exe
    "C:\Users\Admin\AppData\Local\Temp\cb141f7346b20cf67b80b5f05ec27fffba0e83cc74b33c091a01c96f27a2a514.exe"
    1⤵
    • Modifies extensions of user files
    • Drops startup file
    • Drops file in Program Files directory
    • Suspicious use of WriteProcessMemory
    PID:792
    • C:\Windows\SysWOW64\cmd.exe
      cmd /c C:\Users\Admin\AppData\Local\Temp\esehtqayicqadyfrenpn.bat
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:956
      • C:\Windows\SysWOW64\sc.exe
        SC QUERY
        3⤵
          PID:560
        • C:\Windows\SysWOW64\findstr.exe
          FINDSTR SERVICE_NAME
          3⤵
            PID:268
        • C:\Windows\SysWOW64\cmd.exe
          cmd /c C:\Users\Admin\AppData\Local\Temp\lfutuga.bat
          2⤵
            PID:760
          • C:\Windows\SysWOW64\cmd.exe
            cmd /c C:\Users\Admin\AppData\Local\Temp\rpllrjgdft.bat
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1788
            • C:\Windows\SysWOW64\vssadmin.exe
              vssadmin delete shadows /all /quiet
              3⤵
              • Interacts with shadow copies
              PID:1440
          • C:\Windows\SysWOW64\cmd.exe
            cmd /c C:\Users\Admin\AppData\Local\Temp\iacges.bat
            2⤵
              PID:1008
          • C:\Windows\system32\vssvc.exe
            C:\Windows\system32\vssvc.exe
            1⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:1960

          Network

          MITRE ATT&CK Enterprise v6

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          Downloads