Analysis

  • max time kernel
    143s
  • max time network
    162s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220112
  • submitted
    12-02-2022 08:15

General

  • Target

    0b6ffa75db6a8515608b477dd71149cf05a09d7afd1f9a57a33de3bde8c61bbe.exe

  • Size

    89KB

  • MD5

    b378e38c9a5ff333187ae4979b09296c

  • SHA1

    29ee4b18d4d9124795ae3b803f3251687ae75307

  • SHA256

    0b6ffa75db6a8515608b477dd71149cf05a09d7afd1f9a57a33de3bde8c61bbe

  • SHA512

    cf6fd071b2d90c2046d0465879a0a24fe83072fcc39add58dc789541adc550b4d464a2ced28abe2b15b93b388429096eda775a7bc0e12d28cc78e2920d8bacd9

Malware Config

Signatures

  • Sakula

    Sakula is a remote access trojan with various capabilities.

  • Sakula Payload 2 IoCs
  • suricata: ET MALWARE SUSPICIOUS UA (iexplore)

    suricata: ET MALWARE SUSPICIOUS UA (iexplore)

  • suricata: ET MALWARE Sakula/Mivast RAT CnC Beacon 1

    suricata: ET MALWARE Sakula/Mivast RAT CnC Beacon 1

  • 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 50 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\0b6ffa75db6a8515608b477dd71149cf05a09d7afd1f9a57a33de3bde8c61bbe.exe
    "C:\Users\Admin\AppData\Local\Temp\0b6ffa75db6a8515608b477dd71149cf05a09d7afd1f9a57a33de3bde8c61bbe.exe"
    1⤵
    • Checks computer location settings
    • Adds Run key to start application
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3772
    • C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe
      C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe
      2⤵
      • Executes dropped EXE
      PID:656
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c ping 127.0.0.1 & del /q "C:\Users\Admin\AppData\Local\Temp\0b6ffa75db6a8515608b477dd71149cf05a09d7afd1f9a57a33de3bde8c61bbe.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3900
      • C:\Windows\SysWOW64\PING.EXE
        ping 127.0.0.1
        3⤵
        • Runs ping.exe
        PID:2956
  • C:\Windows\system32\MusNotifyIcon.exe
    %systemroot%\system32\MusNotifyIcon.exe NotifyTrayIcon 13
    1⤵
    • Checks processor information in registry
    PID:3976
  • 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:1524
  • 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:2964

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

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

    MD5

    ff525a4a9881ff06f88dd85e8d442392

    SHA1

    5c61f70600362036a308bc4c4e0ca032fbba60b9

    SHA256

    dd2bb970fcd2ffb706ee4b2826635b0f7d991b6666993dde0c1b5b65dc0d74e9

    SHA512

    7db738d6e46cf698f8ce17f1367c0ed10882064ec17eee9533d9857158df73a310e702f621113518c8e7c339bc6ac6bcc88d836327a7e776f29486277f97ed89

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

    MD5

    ff525a4a9881ff06f88dd85e8d442392

    SHA1

    5c61f70600362036a308bc4c4e0ca032fbba60b9

    SHA256

    dd2bb970fcd2ffb706ee4b2826635b0f7d991b6666993dde0c1b5b65dc0d74e9

    SHA512

    7db738d6e46cf698f8ce17f1367c0ed10882064ec17eee9533d9857158df73a310e702f621113518c8e7c339bc6ac6bcc88d836327a7e776f29486277f97ed89