Analysis

  • max time kernel
    173s
  • max time network
    164s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220112
  • submitted
    12-02-2022 03:46

General

  • Target

    16d65a39c8b640d539450f57f0fb8b76537597ecf3f784b976a33f4d2a35e60d.exe

  • Size

    150KB

  • MD5

    75cb4f8b882a933ddd6f5374523e3c3a

  • SHA1

    050e2475b0ec72da8e1db082a645b4f889b4095a

  • SHA256

    16d65a39c8b640d539450f57f0fb8b76537597ecf3f784b976a33f4d2a35e60d

  • SHA512

    a463097a0183d30e2b243d793e9b4992560faab8ae52384840ccfd10b07848d74dfe6a7cd4a82454784919f86e822f009f009a25906794e8e6dc373d68ce51cb

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 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 2 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\16d65a39c8b640d539450f57f0fb8b76537597ecf3f784b976a33f4d2a35e60d.exe
    "C:\Users\Admin\AppData\Local\Temp\16d65a39c8b640d539450f57f0fb8b76537597ecf3f784b976a33f4d2a35e60d.exe"
    1⤵
    • Checks computer location settings
    • Adds Run key to start application
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2280
    • C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe
      C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe
      2⤵
      • Executes dropped EXE
      PID:2580
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c ping 127.0.0.1 & del /q "C:\Users\Admin\AppData\Local\Temp\16d65a39c8b640d539450f57f0fb8b76537597ecf3f784b976a33f4d2a35e60d.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:400
      • C:\Windows\SysWOW64\PING.EXE
        ping 127.0.0.1
        3⤵
        • Runs ping.exe
        PID:2800
  • C:\Windows\system32\MusNotifyIcon.exe
    %systemroot%\system32\MusNotifyIcon.exe NotifyTrayIcon 13
    1⤵
    • Checks processor information in registry
    PID:2564
  • 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:1692
  • 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:2024

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

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

    MD5

    e54f675b0955a69cb6d6ef97a11fb982

    SHA1

    574be217d59b8811250cdfe8d92e4ab810b7d0df

    SHA256

    99ad7130a9d46e1dffe8c30dee62456be7c982e0b88e4e117567d11c715e924d

    SHA512

    adaaab8d6fd7e6b54812634d5cfb96351eba4f7717dc05f7a838d4fce2890278fa0de489d2b8e84d89df6af534fac9458bb814aa01d5fc895ec6430ef509a5a6

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

    MD5

    e54f675b0955a69cb6d6ef97a11fb982

    SHA1

    574be217d59b8811250cdfe8d92e4ab810b7d0df

    SHA256

    99ad7130a9d46e1dffe8c30dee62456be7c982e0b88e4e117567d11c715e924d

    SHA512

    adaaab8d6fd7e6b54812634d5cfb96351eba4f7717dc05f7a838d4fce2890278fa0de489d2b8e84d89df6af534fac9458bb814aa01d5fc895ec6430ef509a5a6