Analysis

  • max time kernel
    148s
  • max time network
    172s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220112
  • submitted
    12-02-2022 12:48

General

  • Target

    0058b20683304f0879571f99448f997700896c627e1aaaeb26f0c3a535d34322.exe

  • Size

    92KB

  • MD5

    84946bbc703130525d6ce4e12f6d70d9

  • SHA1

    74942d38fcd15cd17e0cc1b63b3e45ee83a8b587

  • SHA256

    0058b20683304f0879571f99448f997700896c627e1aaaeb26f0c3a535d34322

  • SHA512

    f4721e90c092bcadc682abf85b5989c4cd0e8947a4edcfec34f1e666e41f6f39f7fcc58592466e09853d13409731f50542cc47fbab91a0f930022916d0b15a51

Malware Config

Signatures

  • Sakula

    Sakula is a remote access trojan with various capabilities.

  • Sakula Payload 2 IoCs
  • suricata: ET MALWARE SUSPICIOUS UA (iexplore)

    suricata: ET MALWARE SUSPICIOUS UA (iexplore)

  • suricata: ET MALWARE Sakula/Mivast RAT CnC Beacon 1

    suricata: ET MALWARE Sakula/Mivast RAT CnC Beacon 1

  • 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 1 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 2 IoCs

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

  • Modifies data under HKEY_USERS 48 IoCs
  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\0058b20683304f0879571f99448f997700896c627e1aaaeb26f0c3a535d34322.exe
    "C:\Users\Admin\AppData\Local\Temp\0058b20683304f0879571f99448f997700896c627e1aaaeb26f0c3a535d34322.exe"
    1⤵
    • Checks computer location settings
    • Adds Run key to start application
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1880
    • C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe
      C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe
      2⤵
      • Executes dropped EXE
      PID:3296
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c ping 127.0.0.1 & del /q "C:\Users\Admin\AppData\Local\Temp\0058b20683304f0879571f99448f997700896c627e1aaaeb26f0c3a535d34322.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1592
      • C:\Windows\SysWOW64\PING.EXE
        ping 127.0.0.1
        3⤵
        • Runs ping.exe
        PID:3252
  • C:\Windows\system32\MusNotifyIcon.exe
    %systemroot%\system32\MusNotifyIcon.exe NotifyTrayIcon 13
    1⤵
    • Checks processor information in registry
    PID:3688
  • 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:2440
  • 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⤵
      PID:228

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

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    Downloads

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

      MD5

      c1db7314c08ea6ea45c9702f91dd2005

      SHA1

      640268e74da342854062b1d2d005e3fe694a9297

      SHA256

      b6100a2ea687afca18f690d8f62d428bb0da77fabce696eb50fdc4107922881b

      SHA512

      ec899b530466c086d245e9645f6cc5be013d8b0f3444f87202196540caab274a5e6ed51a776d52845dff8b4c5967eaad690eb0be3f726287a24e1f1592ee1768

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

      MD5

      c1db7314c08ea6ea45c9702f91dd2005

      SHA1

      640268e74da342854062b1d2d005e3fe694a9297

      SHA256

      b6100a2ea687afca18f690d8f62d428bb0da77fabce696eb50fdc4107922881b

      SHA512

      ec899b530466c086d245e9645f6cc5be013d8b0f3444f87202196540caab274a5e6ed51a776d52845dff8b4c5967eaad690eb0be3f726287a24e1f1592ee1768