Analysis

  • max time kernel
    155s
  • max time network
    177s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220112
  • submitted
    12-02-2022 06:15

General

  • Target

    107a78f3f73fdce6fe59f178abe85b291b5fc4f614d584b0dac3611aa5bb5d01.exe

  • Size

    80KB

  • MD5

    70b8cb899cf21aee84514f52a7bb851b

  • SHA1

    695486db53ebafbca2a49fe70e38dde64bb46174

  • SHA256

    107a78f3f73fdce6fe59f178abe85b291b5fc4f614d584b0dac3611aa5bb5d01

  • SHA512

    9fb259fc60cc1edbac91201924c33499c945d93d5973477eb93d71a142a39ee6b47b25d4359646367c273b663424f5d19f9089c0bb352ea9f22d8bad02625997

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 52 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\107a78f3f73fdce6fe59f178abe85b291b5fc4f614d584b0dac3611aa5bb5d01.exe
    "C:\Users\Admin\AppData\Local\Temp\107a78f3f73fdce6fe59f178abe85b291b5fc4f614d584b0dac3611aa5bb5d01.exe"
    1⤵
    • Checks computer location settings
    • Adds Run key to start application
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2516
    • C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe
      C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe
      2⤵
      • Executes dropped EXE
      PID:3588
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c ping 127.0.0.1 & del /q "C:\Users\Admin\AppData\Local\Temp\107a78f3f73fdce6fe59f178abe85b291b5fc4f614d584b0dac3611aa5bb5d01.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:544
      • C:\Windows\SysWOW64\PING.EXE
        ping 127.0.0.1
        3⤵
        • Runs ping.exe
        PID:392
  • C:\Windows\system32\MusNotifyIcon.exe
    %systemroot%\system32\MusNotifyIcon.exe NotifyTrayIcon 13
    1⤵
    • Checks processor information in registry
    PID:3288
  • 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:2192
  • 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:3828

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

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

    MD5

    c21b7033bfa9ee599390b68e299f3cf4

    SHA1

    02d24d892805f12be25452433285bf755749b7c6

    SHA256

    ae85d5911ae2f9650e823553e91bb4085c9c8a618393f24e135373d9c26e5ea3

    SHA512

    cb4bee8aead4b5cdf2226e30f61231e1728654b4c02a21727fd93802149603f80a6fbeb7a7accc4379dbc89beaea15276b7654e793c6f4d6d122f21ad80b4c79

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

    MD5

    c21b7033bfa9ee599390b68e299f3cf4

    SHA1

    02d24d892805f12be25452433285bf755749b7c6

    SHA256

    ae85d5911ae2f9650e823553e91bb4085c9c8a618393f24e135373d9c26e5ea3

    SHA512

    cb4bee8aead4b5cdf2226e30f61231e1728654b4c02a21727fd93802149603f80a6fbeb7a7accc4379dbc89beaea15276b7654e793c6f4d6d122f21ad80b4c79