Analysis

  • max time kernel
    168s
  • max time network
    185s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220112
  • submitted
    12-02-2022 09:47

General

  • Target

    090dcf6a60810280dea7643112b00b537985039618bd90e227385cca29e7ecc3.exe

  • Size

    99KB

  • MD5

    81ec07143bb7ee8ed4f6cbd20b48eaa1

  • SHA1

    448388289d6fc3c3663060633a36417960b47172

  • SHA256

    090dcf6a60810280dea7643112b00b537985039618bd90e227385cca29e7ecc3

  • SHA512

    68290c1bfe4f7671b38394b1df726f877600b72589d3268e5387dc5d46085260b012bd2aabed9d10bc3f357809c105e5042612dbd99839c98a55a3877e822edc

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 49 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\090dcf6a60810280dea7643112b00b537985039618bd90e227385cca29e7ecc3.exe
    "C:\Users\Admin\AppData\Local\Temp\090dcf6a60810280dea7643112b00b537985039618bd90e227385cca29e7ecc3.exe"
    1⤵
    • Checks computer location settings
    • Adds Run key to start application
    • Suspicious use of WriteProcessMemory
    PID:1856
    • C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe
      C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe
      2⤵
      • Executes dropped EXE
      PID:2396
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c ping 127.0.0.1 & del /q "C:\Users\Admin\AppData\Local\Temp\090dcf6a60810280dea7643112b00b537985039618bd90e227385cca29e7ecc3.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:760
      • C:\Windows\SysWOW64\PING.EXE
        ping 127.0.0.1
        3⤵
        • Runs ping.exe
        PID:1016
  • C:\Windows\system32\MusNotifyIcon.exe
    %systemroot%\system32\MusNotifyIcon.exe NotifyTrayIcon 13
    1⤵
    • Checks processor information in registry
    PID:3168
  • 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:3480
  • 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:2072

Network

MITRE ATT&CK Enterprise v6

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Downloads

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

    981b446ac9a9aa02113be5958a8ab02f

    SHA1

    513936154a9a675725efa4f3f744d1e0827a5895

    SHA256

    8c985d6015377542ee0bac3a72273405dd28e7f6ffc95f8189d92f99da3787f3

    SHA512

    cfc64e03c5533f38ba3a6f6cc74e947f0b1bbd1fcbd1c93d2555fb9fcebbfdd95113a08b0d290701282e1a20445810dc0a522854e75bc1e091b884c3f35c14a7

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

    981b446ac9a9aa02113be5958a8ab02f

    SHA1

    513936154a9a675725efa4f3f744d1e0827a5895

    SHA256

    8c985d6015377542ee0bac3a72273405dd28e7f6ffc95f8189d92f99da3787f3

    SHA512

    cfc64e03c5533f38ba3a6f6cc74e947f0b1bbd1fcbd1c93d2555fb9fcebbfdd95113a08b0d290701282e1a20445810dc0a522854e75bc1e091b884c3f35c14a7