Analysis

  • max time kernel
    147s
  • max time network
    161s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220112
  • submitted
    12-02-2022 07:28

General

  • Target

    0d77fb9c11adc13f541f7670a6ef15e0fbc9da9d0ef39703f5df780dc2ab012b.exe

  • Size

    150KB

  • MD5

    3003fa20e08b924f613f966ded0efc0d

  • SHA1

    6bc9d10c5092b9b80ff453f988d252d4ff3f39c4

  • SHA256

    0d77fb9c11adc13f541f7670a6ef15e0fbc9da9d0ef39703f5df780dc2ab012b

  • SHA512

    c633a939a8633dd084d85464199f9e96a9f6c4bae317b4552596ca4e1f732165716043511e3b1ab27b306ab98adf59846a25fc7ad3626d62eda37643ce62967b

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\0d77fb9c11adc13f541f7670a6ef15e0fbc9da9d0ef39703f5df780dc2ab012b.exe
    "C:\Users\Admin\AppData\Local\Temp\0d77fb9c11adc13f541f7670a6ef15e0fbc9da9d0ef39703f5df780dc2ab012b.exe"
    1⤵
    • Checks computer location settings
    • Adds Run key to start application
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:552
    • C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe
      C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe
      2⤵
      • Executes dropped EXE
      PID:4060
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c ping 127.0.0.1 & del /q "C:\Users\Admin\AppData\Local\Temp\0d77fb9c11adc13f541f7670a6ef15e0fbc9da9d0ef39703f5df780dc2ab012b.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3344
      • C:\Windows\SysWOW64\PING.EXE
        ping 127.0.0.1
        3⤵
        • Runs ping.exe
        PID:2128
  • 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:3584
  • 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:3280
  • C:\Windows\system32\MusNotifyIcon.exe
    %systemroot%\system32\MusNotifyIcon.exe NotifyTrayIcon 13
    1⤵
    • Checks processor information in registry
    PID:3968

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

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

    MD5

    139b56b6ea00db00b14b252b658cf1d6

    SHA1

    c9470e1f5450837cea4ceef4ba928c1cb2703923

    SHA256

    c3fa171764289cf01b2b851f1f1317553ddca470f4d9285a67f2b1c45cfe9b52

    SHA512

    ebd4ffc24928318219010c5fe4fc303aad32b9667885734a6dced3af842cf3b3cb6f32e6065b1d2a2d7d5d65a4f6e7cef14c05d86849fdab9c47b1ca96ec42a1

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

    MD5

    139b56b6ea00db00b14b252b658cf1d6

    SHA1

    c9470e1f5450837cea4ceef4ba928c1cb2703923

    SHA256

    c3fa171764289cf01b2b851f1f1317553ddca470f4d9285a67f2b1c45cfe9b52

    SHA512

    ebd4ffc24928318219010c5fe4fc303aad32b9667885734a6dced3af842cf3b3cb6f32e6065b1d2a2d7d5d65a4f6e7cef14c05d86849fdab9c47b1ca96ec42a1