Analysis

  • max time kernel
    160s
  • max time network
    175s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220112
  • submitted
    12-02-2022 08:22

General

  • Target

    0b37108485ec71a10106f976b7ef5ffeb3e34e28faaed0faf070d391790fa381.exe

  • Size

    192KB

  • MD5

    3372507cc7d8254df74e1922a370bac6

  • SHA1

    245a636b8158a19ad076b2d82fe3004b12831eb1

  • SHA256

    0b37108485ec71a10106f976b7ef5ffeb3e34e28faaed0faf070d391790fa381

  • SHA512

    51ee224c0aefa09d024122362094cf134f9f29c0477bccf8f31c2e03b6ad691aa6f275f38f6d4703c0c1ef87bf4cee03dc81b43fdafe8f28731db72ee3b76042

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 53 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\0b37108485ec71a10106f976b7ef5ffeb3e34e28faaed0faf070d391790fa381.exe
    "C:\Users\Admin\AppData\Local\Temp\0b37108485ec71a10106f976b7ef5ffeb3e34e28faaed0faf070d391790fa381.exe"
    1⤵
    • Checks computer location settings
    • Adds Run key to start application
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3024
    • C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe
      C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe
      2⤵
      • Executes dropped EXE
      PID:3080
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c ping 127.0.0.1 & del /q "C:\Users\Admin\AppData\Local\Temp\0b37108485ec71a10106f976b7ef5ffeb3e34e28faaed0faf070d391790fa381.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:632
      • C:\Windows\SysWOW64\PING.EXE
        ping 127.0.0.1
        3⤵
        • Runs ping.exe
        PID:2112
  • C:\Windows\system32\MusNotifyIcon.exe
    %systemroot%\system32\MusNotifyIcon.exe NotifyTrayIcon 13
    1⤵
    • Checks processor information in registry
    PID:4024
  • 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:1328
  • 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:4008

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

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

    ab4a635ec3a97cb0fa275f75416ed577

    SHA1

    6efca85f5675572fef9d9437df6f3f652afa3c7c

    SHA256

    1dcbc11555bf693563859384e59e26d8d258a04a65502c15d1102ae0d512f482

    SHA512

    9a90b59601b6fe52e1cc5b6eb5d877f6a3d7f75591fca36731da863bd73e20c708d670723e36b2829386fe257c1256193ee5ba65e5a7a6e9ad75604aed3c4202

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

    ab4a635ec3a97cb0fa275f75416ed577

    SHA1

    6efca85f5675572fef9d9437df6f3f652afa3c7c

    SHA256

    1dcbc11555bf693563859384e59e26d8d258a04a65502c15d1102ae0d512f482

    SHA512

    9a90b59601b6fe52e1cc5b6eb5d877f6a3d7f75591fca36731da863bd73e20c708d670723e36b2829386fe257c1256193ee5ba65e5a7a6e9ad75604aed3c4202