Analysis

  • max time kernel
    167s
  • max time network
    172s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220112
  • submitted
    12-02-2022 08:12

General

  • Target

    0b81270647cddbc06c91b6ec0f0393d15ee359964f3e42c6158a5b2a9ba25246.exe

  • Size

    151KB

  • MD5

    3483b9547d5b22867714028f92488997

  • SHA1

    e0df5a0097691c4758a3ce6ccce3f0e29c1ac0ea

  • SHA256

    0b81270647cddbc06c91b6ec0f0393d15ee359964f3e42c6158a5b2a9ba25246

  • SHA512

    49c3fe5111edc4a09237030a9fe7d317db0a251589f2d4e7e3e0f1a44cd2011a0b0a8806507dfaf05e3b47c1842c05ebbbec7eee2153ed61c4cbd1ff452ec84d

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 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\0b81270647cddbc06c91b6ec0f0393d15ee359964f3e42c6158a5b2a9ba25246.exe
    "C:\Users\Admin\AppData\Local\Temp\0b81270647cddbc06c91b6ec0f0393d15ee359964f3e42c6158a5b2a9ba25246.exe"
    1⤵
    • Checks computer location settings
    • Adds Run key to start application
    • Suspicious use of WriteProcessMemory
    PID:456
    • C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe
      C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe
      2⤵
      • Executes dropped EXE
      PID:3108
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c ping 127.0.0.1 & del /q "C:\Users\Admin\AppData\Local\Temp\0b81270647cddbc06c91b6ec0f0393d15ee359964f3e42c6158a5b2a9ba25246.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3092
      • C:\Windows\SysWOW64\PING.EXE
        ping 127.0.0.1
        3⤵
        • Runs ping.exe
        PID:2820
  • C:\Windows\system32\MusNotifyIcon.exe
    %systemroot%\system32\MusNotifyIcon.exe NotifyTrayIcon 13
    1⤵
    • Checks processor information in registry
    PID:3232
  • 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:2088
  • 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:2968

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

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

    MD5

    853deb87a1ba94a3d99d884b9b2512fe

    SHA1

    de053948082debe85e9b58ac9b8771f4a6b2ea9d

    SHA256

    394d64b511e9d073c9d71c8a3bc71da556ff5c3031c6b838b8106095ade42361

    SHA512

    f1b81c7f5223b0c1280cf8a41122147abdafab8558d0ad451d1c70b1741f853f604dc3ec3c0fee33e862f1d4336ceaf28e64f1a0ac7104f70b949ca37d4ace58

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

    MD5

    853deb87a1ba94a3d99d884b9b2512fe

    SHA1

    de053948082debe85e9b58ac9b8771f4a6b2ea9d

    SHA256

    394d64b511e9d073c9d71c8a3bc71da556ff5c3031c6b838b8106095ade42361

    SHA512

    f1b81c7f5223b0c1280cf8a41122147abdafab8558d0ad451d1c70b1741f853f604dc3ec3c0fee33e862f1d4336ceaf28e64f1a0ac7104f70b949ca37d4ace58