Analysis

  • max time kernel
    92s
  • max time network
    96s
  • platform
    windows11-21h2_x64
  • resource
    win11-20241007-en
  • resource tags

    arch:x64arch:x86image:win11-20241007-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    09/10/2024, 17:21

General

  • Target
    unpacked.exe
  • Size 72KB
  • Sample241009-vxavjsthld
  • SHA256 b38b4c1dcf6d6ecd1bbfc236b43c37c18044c2f42f11e5088384f4bd0751929c
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Path
  • C:\Users\Admin\AppData\Local\Temp\!satana!.txt

Ransom Note
  • You had bad luck.There was crypting of all your files in a FS bootkit virus <!SATANA!> To decrypt you need send on this E-mail: [email protected] your private code: 94FEFE56546A997BF55C8312813F5905 and pay on a Bitcoin Wallet: XtumpYQZE3THSx5fG3P9uFTocAbU6DCdwQ total 0,5 btc After that during 1 - 2 days the software will be sent to you - decryptor - and the necessary instructions. All changes in hardware configurations of your computer can make the decryption of your files absolutely impossible! Decryption of your files is possible only on your PC! Recovery is possible during 7 days, after which the program - decryptor - can not ask for the necessary signature from a public certificate server. Please contact via e-mail, which you can find as yet in the form of a text document in a folder with encrypted files, as well as in the name of all encrypted files.If you do not appreciate your files we recommend you format all your disks and reinstall the system. Read carefully this warning as it is no longer able to see at startup of the computer. We remind once again- it is all serious! Do not touch the configuration of your computer! E-mail: [email protected] - this is our mail CODE: 94FEFE56546A997BF55C8312813F5905 this is code; you must send BTC: XtumpYQZE3THSx5fG3P9uFTocAbU6DCdwQ here need to pay 0,5 bitcoins How to pay on the Bitcoin wallet you can easily find on the Internet. Enter your unlock code, obtained by E-mail here and press "ENTER" to continue the normal download on your computer. Good luck! May God help you! <!SATANA!>

Signatures

  • Satana

    Ransomware family which also encrypts the system's Master Boot Record (MBR).

  • Deletes itself 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs

    Bootkits write to the MBR to gain persistence at a level below the operating system.

  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\unpacked.exe
    "C:\Users\Admin\AppData\Local\Temp\unpacked.exe"
    1⤵
    • Adds Run key to start application
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1132
    • C:\Users\Admin\AppData\Local\Temp\kolvrij.exe
      "C:\Users\Admin\AppData\Local\Temp\kolvrij.exe" {ff3bd1f8-84e5-11ef-bfc5-806e6f6e6963} "C:\Users\Admin\AppData\Local\Temp\unpacked.exe"
      2⤵
      • Deletes itself
      • Executes dropped EXE
      • Writes to the Master Boot Record (MBR)
      • System Location Discovery: System Language Discovery
      • Suspicious use of AdjustPrivilegeToken
      PID:4392

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        !satana!.txt

        • Path C:\Users\Admin\AppData\Local\Temp\!satana!.txt
        • Size 1KB
        • SHA256 e03f0a27762e4a55a2b36fe55dcd8b1ebaf93c118aef20f57a02c6b7ece444a1
        • MD5 SHA1 SHA512

        kolvrij.exe

        • Path C:\Users\Admin\AppData\Local\Temp\kolvrij.exe
        • Size 72KB
        • SHA256 b38b4c1dcf6d6ecd1bbfc236b43c37c18044c2f42f11e5088384f4bd0751929c
        • MD5 SHA1 SHA512 SSDEEP