Analysis

  • max time kernel
    160s
  • max time network
    165s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220112
  • submitted
    12-02-2022 11:07

General

  • Target

    054da2f418bb87af187f2d105ded5580673ca92533cbb26ed5294cdcea15c373.exe

  • Size

    89KB

  • MD5

    3b1cd8d8e099dfad0e8df6ab23cfbc19

  • SHA1

    3351275bc1b46615efa48f27682b83dafdb68318

  • SHA256

    054da2f418bb87af187f2d105ded5580673ca92533cbb26ed5294cdcea15c373

  • SHA512

    ab0d85f402cae97673fb95f660d92a287a1d5260004f1cc16d10e849d3d5b7de5c94d375049d97f7b6b3ff5f7301e30efa14c1f35f40c03b6f6739eef52c95bd

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 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\054da2f418bb87af187f2d105ded5580673ca92533cbb26ed5294cdcea15c373.exe
    "C:\Users\Admin\AppData\Local\Temp\054da2f418bb87af187f2d105ded5580673ca92533cbb26ed5294cdcea15c373.exe"
    1⤵
    • Checks computer location settings
    • Adds Run key to start application
    • Suspicious use of WriteProcessMemory
    PID:3112
    • C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe
      C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe
      2⤵
      • Executes dropped EXE
      PID:2428
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c ping 127.0.0.1 & del /q "C:\Users\Admin\AppData\Local\Temp\054da2f418bb87af187f2d105ded5580673ca92533cbb26ed5294cdcea15c373.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3612
      • C:\Windows\SysWOW64\PING.EXE
        ping 127.0.0.1
        3⤵
        • Runs ping.exe
        PID:1356
  • C:\Windows\system32\MusNotifyIcon.exe
    %systemroot%\system32\MusNotifyIcon.exe NotifyTrayIcon 13
    1⤵
    • Checks processor information in registry
    PID:3292
  • 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:3740
  • 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:1324

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe
    MD5

    5a5b39c9280235f27be2f303288b38c0

    SHA1

    bd10b887e15a90b9e32b6f98ef1ccd5c3985a895

    SHA256

    f2ee8b56bf979da033b8caa6c37dda2b4fd06edf77b8c4940539ec8b8829d242

    SHA512

    cd7b8258d3c3a42e149d829966bcde88c527b6a02e7ef47d68911abeb560ca5d3c8e4a25be280ad6c3dfc5790ab4364b535431be8590ec9cb8e19c81a29b080a

  • C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe
    MD5

    5a5b39c9280235f27be2f303288b38c0

    SHA1

    bd10b887e15a90b9e32b6f98ef1ccd5c3985a895

    SHA256

    f2ee8b56bf979da033b8caa6c37dda2b4fd06edf77b8c4940539ec8b8829d242

    SHA512

    cd7b8258d3c3a42e149d829966bcde88c527b6a02e7ef47d68911abeb560ca5d3c8e4a25be280ad6c3dfc5790ab4364b535431be8590ec9cb8e19c81a29b080a