Overview

overview

10

Static

static

6

40a2ace8bb...95.exe

windows7_x64

10

40a2ace8bb...95.exe

windows10_x64

10

Analysis

  • max time kernel
    134s
  • max time network
    54s
  • platform
    windows10_x64
  • resource
    win10v200430
  • submitted
    13/07/2020, 13:56

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General

  • Target
    40a2ace8bb6e3d7d50bb346344789c2fafd25490fdaa982134aaacce6f971995.exe
  • Size 4.6MB
  • Sample200713-b76mcxwwds
  • SHA256 40a2ace8bb6e3d7d50bb346344789c2fafd25490fdaa982134aaacce6f971995
  • MD5 SHA1 SHA512
Score
10/10
ransomwarepersistencespyware

Malware Config

Extracted

Path

  • C:\Boot\Fonts\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] 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

  • Modifies service 2 TTPs 5 IoCs
    persistence
  • Reads user/profile data of web browsers 2 TTPs

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

    spyware
  • Deletes shadow copies 2 TTPs

    Ransomware often targets backup files to inhibit system recovery.

    ransomware
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Launches sc.exe

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

  • Drops file in Program Files directory 25639 IoCs
  • Drops startup file 2 IoCs
  • Interacts with shadow copies 2 TTPs 1 IoCs

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

    ransomware
  • Suspicious use of WriteProcessMemory 14 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\40a2ace8bb6e3d7d50bb346344789c2fafd25490fdaa982134aaacce6f971995.exe
    "C:\Users\Admin\AppData\Local\Temp\40a2ace8bb6e3d7d50bb346344789c2fafd25490fdaa982134aaacce6f971995.exe"
    1⤵
    • Drops file in Program Files directory
    • Drops startup file
    • Suspicious use of WriteProcessMemory
    PID:896
    • C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\Temp\bpprjogjbgjyscxho.bat
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:856
      • C:\Windows\system32\sc.exe
        SC QUERY
        3⤵
          PID:1048
        • C:\Windows\system32\findstr.exe
          FINDSTR SERVICE_NAME
          3⤵
            PID:1052
        • C:\Windows\system32\cmd.exe
          C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\Temp\owsbbpjvxc.bat
          2⤵
            PID:2896
          • C:\Windows\system32\cmd.exe
            C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\Temp\fdtuxkwqg.bat
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:3496
            • C:\Windows\system32\vssadmin.exe
              vssadmin delete shadows /all /quiet
              3⤵
              • Interacts with shadow copies
              PID:3092
          • C:\Windows\system32\cmd.exe
            C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\Temp\kegoicby.bat
            2⤵
              PID:3840
          • C:\Windows\system32\vssvc.exe
            C:\Windows\system32\vssvc.exe
            1⤵
            • Modifies service
            • Suspicious use of AdjustPrivilegeToken
            PID:3000

          Network

                MITRE ATT&CK Enterprise v6

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                Downloads