Analysis

  • max time kernel
    168s
  • max time network
    184s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220112
  • submitted
    12-02-2022 04:55

General

  • Target

    140519d3493decc81e335ccc7c5f867fcb0f12c62ff5bc55a22158f432a49587.exe

  • Size

    92KB

  • MD5

    d436ac297fe15c650d0aa50d0d60b1c0

  • SHA1

    c2fb353bc2ee73a133f3f95426c6a3b25d85f2f0

  • SHA256

    140519d3493decc81e335ccc7c5f867fcb0f12c62ff5bc55a22158f432a49587

  • SHA512

    323e2636a341458456ee3f576af27ee8000a893434d6d6298889daca2388a10f7c4d8c4412508622e3d6e942de411d9bbbcd0582948a7d451371a567f619c179

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 54 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\140519d3493decc81e335ccc7c5f867fcb0f12c62ff5bc55a22158f432a49587.exe
    "C:\Users\Admin\AppData\Local\Temp\140519d3493decc81e335ccc7c5f867fcb0f12c62ff5bc55a22158f432a49587.exe"
    1⤵
    • Checks computer location settings
    • Adds Run key to start application
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2660
    • C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe
      C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe
      2⤵
      • Executes dropped EXE
      PID:4080
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c ping 127.0.0.1 & del /q "C:\Users\Admin\AppData\Local\Temp\140519d3493decc81e335ccc7c5f867fcb0f12c62ff5bc55a22158f432a49587.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2608
      • C:\Windows\SysWOW64\PING.EXE
        ping 127.0.0.1
        3⤵
        • Runs ping.exe
        PID:2748
  • C:\Windows\system32\MusNotifyIcon.exe
    %systemroot%\system32\MusNotifyIcon.exe NotifyTrayIcon 13
    1⤵
    • Checks processor information in registry
    PID:2232
  • 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:112
  • 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:180

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

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

    MD5

    bab7e80932251a6737c10c0df90aee10

    SHA1

    a1890e15bbaad2854e0cdcc7beefa1df80375b28

    SHA256

    d557c90e237df69446643e85f4a773f17d4b297c9d9c38b1f8d2e9990bdb13ee

    SHA512

    02f1516730f6c9ad4023cac9b54b9fe7711d220539b7dfb784f347317964ce3296eaf8288277acb2297217b2ade0f3d89ffa357d2f758f6eb2f8043d48dfbce2

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

    MD5

    bab7e80932251a6737c10c0df90aee10

    SHA1

    a1890e15bbaad2854e0cdcc7beefa1df80375b28

    SHA256

    d557c90e237df69446643e85f4a773f17d4b297c9d9c38b1f8d2e9990bdb13ee

    SHA512

    02f1516730f6c9ad4023cac9b54b9fe7711d220539b7dfb784f347317964ce3296eaf8288277acb2297217b2ade0f3d89ffa357d2f758f6eb2f8043d48dfbce2