Analysis

  • max time kernel
    155s
  • max time network
    172s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220112
  • submitted
    12-02-2022 05:37

General

  • Target

    1230f2b6ed5501b992cb3bf6e1b35a6ddac1bcd393e5cc8e8e53d29c07cb59f9.exe

  • Size

    101KB

  • MD5

    8bcb4a4f62e89f8d5ecce505d38af12d

  • SHA1

    cf293e63617ca82e2eb1c841f753d72af59cddef

  • SHA256

    1230f2b6ed5501b992cb3bf6e1b35a6ddac1bcd393e5cc8e8e53d29c07cb59f9

  • SHA512

    b9349b94b9272b56c91e846ae06d8a7c90cd9efd3eb66e63f4eda275afac9286ee166dbe7d7a92ed79268c6fd2c597b6125a5bccc0dcdb92f9ea7d65429216b2

Malware Config

Signatures

  • Sakula

    Sakula is a remote access trojan with various capabilities.

  • Sakula Payload 2 IoCs
  • Executes dropped EXE 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Drops file in Windows directory 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Checks processor information in registry 2 TTPs 4 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Modifies data under HKEY_USERS 50 IoCs
  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\1230f2b6ed5501b992cb3bf6e1b35a6ddac1bcd393e5cc8e8e53d29c07cb59f9.exe
    "C:\Users\Admin\AppData\Local\Temp\1230f2b6ed5501b992cb3bf6e1b35a6ddac1bcd393e5cc8e8e53d29c07cb59f9.exe"
    1⤵
    • Checks computer location settings
    • Adds Run key to start application
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3700
    • C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe
      C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe
      2⤵
      • Executes dropped EXE
      PID:3488
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c ping 127.0.0.1 & del /q "C:\Users\Admin\AppData\Local\Temp\1230f2b6ed5501b992cb3bf6e1b35a6ddac1bcd393e5cc8e8e53d29c07cb59f9.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3280
      • C:\Windows\SysWOW64\PING.EXE
        ping 127.0.0.1
        3⤵
        • Runs ping.exe
        PID:480
  • C:\Windows\system32\MusNotifyIcon.exe
    %systemroot%\system32\MusNotifyIcon.exe NotifyTrayIcon 13
    1⤵
    • Checks processor information in registry
    PID:2496
  • C:\Windows\system32\MusNotifyIcon.exe
    %systemroot%\system32\MusNotifyIcon.exe NotifyTrayIcon 13
    1⤵
    • Checks processor information in registry
    PID:3372
  • C:\Windows\System32\svchost.exe
    C:\Windows\System32\svchost.exe -k NetworkService -p
    1⤵
    • Drops file in Windows directory
    • Modifies data under HKEY_USERS
    PID:752
  • C:\Windows\winsxs\amd64_microsoft-windows-servicingstack_31bf3856ad364e35_10.0.19041.1220_none_7e21bc567c7ed16b\TiWorker.exe
    C:\Windows\winsxs\amd64_microsoft-windows-servicingstack_31bf3856ad364e35_10.0.19041.1220_none_7e21bc567c7ed16b\TiWorker.exe -Embedding
    1⤵
    • Drops file in Windows directory
    • Suspicious use of AdjustPrivilegeToken
    PID:1968

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe

    MD5

    6f70272053ef4c8ff8b4b910cb322fd3

    SHA1

    17958d3086f838d903250402d294f39622361eed

    SHA256

    3b67cb60fd02c5936ebf9d300dd71475bc63e40af28d37fecc3bff60fef5bcc9

    SHA512

    2c63ad0d9349d58875ce81d83e46cbd156b344d0af2364aba90e34450dc486c470d09d57f5565ecb4d3212d3e9af299e4cdfb9143bab3b172f7b12970b86c3e0

  • C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe

    MD5

    6f70272053ef4c8ff8b4b910cb322fd3

    SHA1

    17958d3086f838d903250402d294f39622361eed

    SHA256

    3b67cb60fd02c5936ebf9d300dd71475bc63e40af28d37fecc3bff60fef5bcc9

    SHA512

    2c63ad0d9349d58875ce81d83e46cbd156b344d0af2364aba90e34450dc486c470d09d57f5565ecb4d3212d3e9af299e4cdfb9143bab3b172f7b12970b86c3e0