Analysis

  • max time kernel
    123s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    20/12/2023, 12:54

General

  • Target
    b513e34939f4c8db1c0a0043aca5ee50.exe
  • Size 304KB
  • Sample231220-p5e7cafdb2
  • SHA256 33c8ace830117c2b62deb9447d1319803cd82cf996213fd2dd7bb6c99933b346
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • sakula

C2
  • www.polarroute.com

Signatures

  • Sakula

    Sakula is a remote access trojan with various capabilities.

  • Sakula payload 4 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 1 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b513e34939f4c8db1c0a0043aca5ee50.exe
    "C:\Users\Admin\AppData\Local\Temp\b513e34939f4c8db1c0a0043aca5ee50.exe"
    1⤵
    • Checks computer location settings
    • Adds Run key to start application
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1564
    • C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe
      C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe
      2⤵
      • Executes dropped EXE
      PID:432
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c ping 127.0.0.1 & del /q "C:\Users\Admin\AppData\Local\Temp\b513e34939f4c8db1c0a0043aca5ee50.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4252
      • C:\Windows\SysWOW64\PING.EXE
        ping 127.0.0.1
        3⤵
        • Runs ping.exe
        PID:3300

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        MediaCenter.exe

        • Path C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe
        • Size 304KB
        • SHA256 b5915fc749753003b168e41fd3ffdc98abe18b9ca4b19c0cd9f41bb9253e3e12
        • MD5 SHA1 SHA512 SSDEEP

        memory/432-5-0x0000000000400000-0x0000000000420000-memory.dmp

        memory/1564-0-0x0000000000400000-0x0000000000420000-memory.dmp

        memory/1564-6-0x0000000000400000-0x0000000000420000-memory.dmp