Analysis

  • max time kernel
    184s
  • max time network
    193s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220112
  • submitted
    12-02-2022 03:22

General

  • Target

    17ca715adf1fc0fda769faf4c7f13f62580e8d7f1d6285c5ef884d3ff57d1c97.exe

  • Size

    35KB

  • MD5

    a4402b185b8425c43dc3833e5796a038

  • SHA1

    b6967f506a5034c57dff5d02b75828b9ed5aa13e

  • SHA256

    17ca715adf1fc0fda769faf4c7f13f62580e8d7f1d6285c5ef884d3ff57d1c97

  • SHA512

    7b218bceb4b81b5ccd5def0f732f12b28c516cdbf23bb89971503fdc1d1c29f7933c623a7dac60ec05673c87eb7f2171bd530a1f3bfa1ba964ac53923cd201c9

Malware Config

Signatures

  • Sakula

    Sakula is a remote access trojan with various capabilities.

  • 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\17ca715adf1fc0fda769faf4c7f13f62580e8d7f1d6285c5ef884d3ff57d1c97.exe
    "C:\Users\Admin\AppData\Local\Temp\17ca715adf1fc0fda769faf4c7f13f62580e8d7f1d6285c5ef884d3ff57d1c97.exe"
    1⤵
    • Checks computer location settings
    • Adds Run key to start application
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:352
    • C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe
      C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe
      2⤵
      • Executes dropped EXE
      PID:3120
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c ping 127.0.0.1 & del /q "C:\Users\Admin\AppData\Local\Temp\17ca715adf1fc0fda769faf4c7f13f62580e8d7f1d6285c5ef884d3ff57d1c97.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2000
      • C:\Windows\SysWOW64\PING.EXE
        ping 127.0.0.1
        3⤵
        • Runs ping.exe
        PID:1872
  • C:\Windows\system32\MusNotifyIcon.exe
    %systemroot%\system32\MusNotifyIcon.exe NotifyTrayIcon 13
    1⤵
    • Checks processor information in registry
    PID:3292
  • 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:2416
  • 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:772

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

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

    MD5

    82e7ec1e8f5ce06ed0ad876d55acb612

    SHA1

    d48259b868f66450e1db724d432c430b4428fa19

    SHA256

    e9201639edfc05e4b2ee29dfdda9256fbfa189f99b4587c4dcb6a852bfd72019

    SHA512

    96a0f83457d12218a506c2de2d81188dc336b2d84d4da1f209547b11a1c8f0ce9a24ebf38007e9af0a1bd66e4db02ada46c49d631fa5faf1f1bd628cb8b44fca

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

    MD5

    82e7ec1e8f5ce06ed0ad876d55acb612

    SHA1

    d48259b868f66450e1db724d432c430b4428fa19

    SHA256

    e9201639edfc05e4b2ee29dfdda9256fbfa189f99b4587c4dcb6a852bfd72019

    SHA512

    96a0f83457d12218a506c2de2d81188dc336b2d84d4da1f209547b11a1c8f0ce9a24ebf38007e9af0a1bd66e4db02ada46c49d631fa5faf1f1bd628cb8b44fca