Analysis

  • max time kernel
    170s
  • max time network
    182s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220112
  • submitted
    12-02-2022 04:25

General

  • Target

    1553135a2f67d58eb7a2a6f9bc8cd0e5e1fdc7b0a0198b7ff0427da7017fd9d7.exe

  • Size

    192KB

  • MD5

    8eb31057468f171b2d790b4d6ae6a0bb

  • SHA1

    70dfd26967331a420c323b3c7851b7175b1e4dbc

  • SHA256

    1553135a2f67d58eb7a2a6f9bc8cd0e5e1fdc7b0a0198b7ff0427da7017fd9d7

  • SHA512

    7650089551c0b7871234d6d4c42a95fc769489869796f0087ec050b9e3fa5c03102dd1bb9b3e6a7f8217214ab64a3e7641a7f9f367ff514a7b2f5ec9d0dae244

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 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\1553135a2f67d58eb7a2a6f9bc8cd0e5e1fdc7b0a0198b7ff0427da7017fd9d7.exe
    "C:\Users\Admin\AppData\Local\Temp\1553135a2f67d58eb7a2a6f9bc8cd0e5e1fdc7b0a0198b7ff0427da7017fd9d7.exe"
    1⤵
    • Checks computer location settings
    • Adds Run key to start application
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2144
    • C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe
      C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe
      2⤵
      • Executes dropped EXE
      PID:1764
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c ping 127.0.0.1 & del /q "C:\Users\Admin\AppData\Local\Temp\1553135a2f67d58eb7a2a6f9bc8cd0e5e1fdc7b0a0198b7ff0427da7017fd9d7.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4088
      • C:\Windows\SysWOW64\PING.EXE
        ping 127.0.0.1
        3⤵
        • Runs ping.exe
        PID:3228
  • C:\Windows\system32\MusNotifyIcon.exe
    %systemroot%\system32\MusNotifyIcon.exe NotifyTrayIcon 13
    1⤵
    • Checks processor information in registry
    PID:2116
  • 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:2256
  • 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:4064

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

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

    MD5

    9b5b08e7f84c18c57a1c364b150df6c8

    SHA1

    7a16e7d28dbed8c46651ed36e040b11d63642c13

    SHA256

    c0f4fff029e04e1452a30bd1f2542101947be496f8566ee3d6a25d838cdf81ed

    SHA512

    b37fa9c714dfb8eb35943b9d4aa4d34f70893fa2a07e98299bf14b51e00fd4415b0fd81d33bc72f1d59402c93bc68d145c78f5ecd7962be23afc36986470c835

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

    MD5

    9b5b08e7f84c18c57a1c364b150df6c8

    SHA1

    7a16e7d28dbed8c46651ed36e040b11d63642c13

    SHA256

    c0f4fff029e04e1452a30bd1f2542101947be496f8566ee3d6a25d838cdf81ed

    SHA512

    b37fa9c714dfb8eb35943b9d4aa4d34f70893fa2a07e98299bf14b51e00fd4415b0fd81d33bc72f1d59402c93bc68d145c78f5ecd7962be23afc36986470c835