Analysis

  • max time kernel
    163s
  • max time network
    174s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220112
  • submitted
    12-02-2022 04:16

General

  • Target

    15a84a9a0cdab9e372d245962c0c9b8b6bd3eb3dc44ebfb9b90d2165ab468dc8.exe

  • Size

    89KB

  • MD5

    29bb238ad8c9b35cd0360e1090ef7135

  • SHA1

    8b7d5362ea119819defca267c1fb061631b04c57

  • SHA256

    15a84a9a0cdab9e372d245962c0c9b8b6bd3eb3dc44ebfb9b90d2165ab468dc8

  • SHA512

    64eaec3333dad77a0d5731c575b40bc0f73c3add458ed3d55a5f44e7d531bbd495627f9820d5b0e628d83c8392e47b3e1378dd72429a36d6f18531b78588809b

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\15a84a9a0cdab9e372d245962c0c9b8b6bd3eb3dc44ebfb9b90d2165ab468dc8.exe
    "C:\Users\Admin\AppData\Local\Temp\15a84a9a0cdab9e372d245962c0c9b8b6bd3eb3dc44ebfb9b90d2165ab468dc8.exe"
    1⤵
    • Checks computer location settings
    • Adds Run key to start application
    • Suspicious use of WriteProcessMemory
    PID:2648
    • C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe
      C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe
      2⤵
      • Executes dropped EXE
      PID:2540
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c ping 127.0.0.1 & del /q "C:\Users\Admin\AppData\Local\Temp\15a84a9a0cdab9e372d245962c0c9b8b6bd3eb3dc44ebfb9b90d2165ab468dc8.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3648
      • C:\Windows\SysWOW64\PING.EXE
        ping 127.0.0.1
        3⤵
        • Runs ping.exe
        PID:2108
  • C:\Windows\system32\MusNotifyIcon.exe
    %systemroot%\system32\MusNotifyIcon.exe NotifyTrayIcon 13
    1⤵
    • Checks processor information in registry
    PID:628
  • 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:3048
  • 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:4060

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

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

    MD5

    f0c0a09bb9898bd48844e3ddd1393c44

    SHA1

    299e9ece84635f330ef2193353ca349cb5ef8cfa

    SHA256

    1f8626cac48e1c383614bc02134ab3dfceffecfa4f5ac7d380353be8c2d4ed9d

    SHA512

    d4731e085682271fab86bef74c5e78dfc5e6bd9e02204e1a1e669b53bf0b7a4ff61f7932e9683a80b2902acf7dd70210729b132a154c81493af5af6373ee6065

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

    MD5

    f0c0a09bb9898bd48844e3ddd1393c44

    SHA1

    299e9ece84635f330ef2193353ca349cb5ef8cfa

    SHA256

    1f8626cac48e1c383614bc02134ab3dfceffecfa4f5ac7d380353be8c2d4ed9d

    SHA512

    d4731e085682271fab86bef74c5e78dfc5e6bd9e02204e1a1e669b53bf0b7a4ff61f7932e9683a80b2902acf7dd70210729b132a154c81493af5af6373ee6065