Analysis

  • max time kernel
    187s
  • max time network
    187s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220112
  • submitted
    12-02-2022 03:31

General

  • Target

    176d3d7e8bd506eb36c2e17a8a3dcdeb50dde32630686d49a2a4d02f45d29726.exe

  • Size

    191KB

  • MD5

    5323214adc912144fd9dfd120e772723

  • SHA1

    bd47a5a596c3465b376d4619a19fbe3be6432bc9

  • SHA256

    176d3d7e8bd506eb36c2e17a8a3dcdeb50dde32630686d49a2a4d02f45d29726

  • SHA512

    112ff4daf9459b760a056258277d7a35cf4119fc695db1ca3168032ea2784efa0557a5ef36d3115944b434f7d1d910d2755df908db8b22fb3f2c10fa96c44da3

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 51 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\176d3d7e8bd506eb36c2e17a8a3dcdeb50dde32630686d49a2a4d02f45d29726.exe
    "C:\Users\Admin\AppData\Local\Temp\176d3d7e8bd506eb36c2e17a8a3dcdeb50dde32630686d49a2a4d02f45d29726.exe"
    1⤵
    • Checks computer location settings
    • Adds Run key to start application
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3892
    • C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe
      C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe
      2⤵
      • Executes dropped EXE
      PID:3540
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c ping 127.0.0.1 & del /q "C:\Users\Admin\AppData\Local\Temp\176d3d7e8bd506eb36c2e17a8a3dcdeb50dde32630686d49a2a4d02f45d29726.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4040
      • C:\Windows\SysWOW64\PING.EXE
        ping 127.0.0.1
        3⤵
        • Runs ping.exe
        PID:2968
  • C:\Windows\system32\MusNotifyIcon.exe
    %systemroot%\system32\MusNotifyIcon.exe NotifyTrayIcon 13
    1⤵
    • Checks processor information in registry
    PID:212
  • 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:648
  • 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:3844

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

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

    MD5

    d2f64bcdd3221a3557cbeed6c605c3b9

    SHA1

    2eb78e986074c6a618ba3a742fa56477e7ffd325

    SHA256

    0dc1a6bf5ec3943311a922eaee893bdc3277458d0564a45496e9474e8de79e3b

    SHA512

    c202d005721181aa4e7bb826bd82b75aa96d89370d9b8d6e20877bf8643bcf5e0b285d991e40e71f858c3297721726b5d532ed0fd99e8539a8cca008ddadb5f9

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

    MD5

    d2f64bcdd3221a3557cbeed6c605c3b9

    SHA1

    2eb78e986074c6a618ba3a742fa56477e7ffd325

    SHA256

    0dc1a6bf5ec3943311a922eaee893bdc3277458d0564a45496e9474e8de79e3b

    SHA512

    c202d005721181aa4e7bb826bd82b75aa96d89370d9b8d6e20877bf8643bcf5e0b285d991e40e71f858c3297721726b5d532ed0fd99e8539a8cca008ddadb5f9