Analysis

  • max time kernel
    177s
  • max time network
    182s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220112
  • submitted
    12-02-2022 06:24

General

  • Target

    101a60d31b6d4e4c2444fa649ae3f45198d548d34c816a666b00eb060961a6e5.exe

  • Size

    150KB

  • MD5

    1781e2c8a95f48813104dd3660d9f0b6

  • SHA1

    f56a7d4a3c85bcaae2264c4eb3d76d8197d06ac9

  • SHA256

    101a60d31b6d4e4c2444fa649ae3f45198d548d34c816a666b00eb060961a6e5

  • SHA512

    547e25ffc4c84d9003f140eca436b5a25c9faaa33eb8668ba246d2f611c57b180e8f0b0f077a4c636d894fb857730c3fe13800831c41b78095abf2d6a84b4814

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 53 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\101a60d31b6d4e4c2444fa649ae3f45198d548d34c816a666b00eb060961a6e5.exe
    "C:\Users\Admin\AppData\Local\Temp\101a60d31b6d4e4c2444fa649ae3f45198d548d34c816a666b00eb060961a6e5.exe"
    1⤵
    • Checks computer location settings
    • Adds Run key to start application
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2056
    • C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe
      C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe
      2⤵
      • Executes dropped EXE
      PID:1864
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c ping 127.0.0.1 & del /q "C:\Users\Admin\AppData\Local\Temp\101a60d31b6d4e4c2444fa649ae3f45198d548d34c816a666b00eb060961a6e5.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2544
      • C:\Windows\SysWOW64\PING.EXE
        ping 127.0.0.1
        3⤵
        • Runs ping.exe
        PID:2516
  • C:\Windows\system32\MusNotifyIcon.exe
    %systemroot%\system32\MusNotifyIcon.exe NotifyTrayIcon 13
    1⤵
    • Checks processor information in registry
    PID:1932
  • 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:760
  • 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:2888

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

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

    MD5

    c6830908323fedda77d06d42575d4393

    SHA1

    9f28b2451f65e37b19337d0056e242eae4634c1c

    SHA256

    5388e170668b9475b00c382f1f9d21108245fd078a3e4cc574d097505573dadb

    SHA512

    0b79ca480307c262559b8a5cc5133ee87684d71cf13b2776b1ec649292c710ac4f34b073831d9e4201d7a566faf59f8aad2af029ff28e1b90b6a32ddf33969c6

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

    MD5

    c6830908323fedda77d06d42575d4393

    SHA1

    9f28b2451f65e37b19337d0056e242eae4634c1c

    SHA256

    5388e170668b9475b00c382f1f9d21108245fd078a3e4cc574d097505573dadb

    SHA512

    0b79ca480307c262559b8a5cc5133ee87684d71cf13b2776b1ec649292c710ac4f34b073831d9e4201d7a566faf59f8aad2af029ff28e1b90b6a32ddf33969c6