Analysis

  • max time kernel
    152s
  • max time network
    148s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220112
  • submitted
    12-02-2022 09:11

General

  • Target

    0ac5b1712f2016f7caf89a62ea561dc037f78ca4fdea71464451e87c0f5b00a1.exe

  • Size

    101KB

  • MD5

    45c3af9f5aec9f5d2448067fb6c81259

  • SHA1

    58d02fd564935c15fd6ba3685f979caae3bc9f42

  • SHA256

    0ac5b1712f2016f7caf89a62ea561dc037f78ca4fdea71464451e87c0f5b00a1

  • SHA512

    869f0b46add91eb251c306bf094494de8634ee7149a4b217aaf114955b08dac89c039fec3e6299367e52e203b0976f9f632e13c9372091576f688030ad86571b

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 2 IoCs

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

  • Modifies data under HKEY_USERS 56 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\0ac5b1712f2016f7caf89a62ea561dc037f78ca4fdea71464451e87c0f5b00a1.exe
    "C:\Users\Admin\AppData\Local\Temp\0ac5b1712f2016f7caf89a62ea561dc037f78ca4fdea71464451e87c0f5b00a1.exe"
    1⤵
    • Checks computer location settings
    • Adds Run key to start application
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1136
    • C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe
      C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe
      2⤵
      • Executes dropped EXE
      PID:1872
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c ping 127.0.0.1 & del /q "C:\Users\Admin\AppData\Local\Temp\0ac5b1712f2016f7caf89a62ea561dc037f78ca4fdea71464451e87c0f5b00a1.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3684
      • C:\Windows\SysWOW64\PING.EXE
        ping 127.0.0.1
        3⤵
        • Runs ping.exe
        PID:4056
  • C:\Windows\system32\MusNotifyIcon.exe
    %systemroot%\system32\MusNotifyIcon.exe NotifyTrayIcon 13
    1⤵
    • Checks processor information in registry
    PID:3308
  • 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:2560
  • 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:3800

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe
    MD5

    668c82b1f3196e27a6c0ffb461e5f3d6

    SHA1

    801b0cef5068607a55805696c727b785b388f92a

    SHA256

    6868992ce274dc671e789dda4e3e001708dde518dc14a97173e379f905ae83b6

    SHA512

    f3fdd3ebe417da9a1c49487011366d1657b7a29167169e9ae5427775df53ca8db2a152b00c48dd2aa7b75d903423e3e68579c9b2b7ce835c8819d2e4047e1481

  • C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe
    MD5

    668c82b1f3196e27a6c0ffb461e5f3d6

    SHA1

    801b0cef5068607a55805696c727b785b388f92a

    SHA256

    6868992ce274dc671e789dda4e3e001708dde518dc14a97173e379f905ae83b6

    SHA512

    f3fdd3ebe417da9a1c49487011366d1657b7a29167169e9ae5427775df53ca8db2a152b00c48dd2aa7b75d903423e3e68579c9b2b7ce835c8819d2e4047e1481