Analysis

  • max time kernel
    152s
  • max time network
    166s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220112
  • submitted
    12-02-2022 05:57

General

  • Target

    113e66c3404b9e9c0a680706b40a6fab316cb39ede582c35470e994f46905591.exe

  • Size

    58KB

  • MD5

    b228e33bf33c05c38d46ff3c9e91cfd7

  • SHA1

    0d08a72412bfad554b8be2caac2ff98e3424e043

  • SHA256

    113e66c3404b9e9c0a680706b40a6fab316cb39ede582c35470e994f46905591

  • SHA512

    d29b1785503812807fdb637d41319f0fa0db36d1ed1a1d8934549cb9b258b434d9f784b1d0ca53c215fed52fa0bef88d1f866af3a74827934f0f58bc2a326215

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 4 IoCs

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

  • Modifies data under HKEY_USERS 49 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\113e66c3404b9e9c0a680706b40a6fab316cb39ede582c35470e994f46905591.exe
    "C:\Users\Admin\AppData\Local\Temp\113e66c3404b9e9c0a680706b40a6fab316cb39ede582c35470e994f46905591.exe"
    1⤵
    • Checks computer location settings
    • Adds Run key to start application
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3684
    • C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe
      C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe
      2⤵
      • Executes dropped EXE
      PID:3356
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c ping 127.0.0.1 & del /q "C:\Users\Admin\AppData\Local\Temp\113e66c3404b9e9c0a680706b40a6fab316cb39ede582c35470e994f46905591.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2604
      • C:\Windows\SysWOW64\PING.EXE
        ping 127.0.0.1
        3⤵
        • Runs ping.exe
        PID:696
  • C:\Windows\system32\MusNotifyIcon.exe
    %systemroot%\system32\MusNotifyIcon.exe NotifyTrayIcon 13
    1⤵
    • Checks processor information in registry
    PID:3616
  • C:\Windows\system32\MusNotifyIcon.exe
    %systemroot%\system32\MusNotifyIcon.exe NotifyTrayIcon 13
    1⤵
    • Checks processor information in registry
    PID:3316
  • 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:2144
  • 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:3220

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

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

    MD5

    652ceecd065f0cb8d7393ed345e81fd2

    SHA1

    cea810d6e42d332a7df59ed04da2b711ff343a66

    SHA256

    679a0ed1cf8994122421b1079f4fe328c37385befda29678d869b7a3cbb26c34

    SHA512

    009ef3a425988c5f0ca7c13b3cbff0013e3d78cf3f60db9dde6787a99764ae9d5dc5bfab922ae3d5b0beb1c6954d29028e5ab3cdb1a4175266480d68006bc856

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

    MD5

    652ceecd065f0cb8d7393ed345e81fd2

    SHA1

    cea810d6e42d332a7df59ed04da2b711ff343a66

    SHA256

    679a0ed1cf8994122421b1079f4fe328c37385befda29678d869b7a3cbb26c34

    SHA512

    009ef3a425988c5f0ca7c13b3cbff0013e3d78cf3f60db9dde6787a99764ae9d5dc5bfab922ae3d5b0beb1c6954d29028e5ab3cdb1a4175266480d68006bc856