Analysis

  • max time kernel
    158s
  • max time network
    159s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220112
  • submitted
    12-02-2022 11:33

General

  • Target

    041ef5263504ab8fbb972529b2f7c861bb04175c9aa7b9cbb2a7c8a2c672de60.exe

  • Size

    101KB

  • MD5

    c4a0411e035d4e538e295b19af6554c7

  • SHA1

    0727a1eabe9b6f782b69dd8ae15929208c81f50c

  • SHA256

    041ef5263504ab8fbb972529b2f7c861bb04175c9aa7b9cbb2a7c8a2c672de60

  • SHA512

    5fc58033b82e1551a36d547c27d258fea8ffafcbae24a969ef074e3b20df18bb7f3ac4092b89fc1f253acf686b02464c356223631069af02bba74f15e8a25dd7

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 56 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\041ef5263504ab8fbb972529b2f7c861bb04175c9aa7b9cbb2a7c8a2c672de60.exe
    "C:\Users\Admin\AppData\Local\Temp\041ef5263504ab8fbb972529b2f7c861bb04175c9aa7b9cbb2a7c8a2c672de60.exe"
    1⤵
    • Checks computer location settings
    • Adds Run key to start application
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3008
    • C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe
      C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe
      2⤵
      • Executes dropped EXE
      PID:3292
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c ping 127.0.0.1 & del /q "C:\Users\Admin\AppData\Local\Temp\041ef5263504ab8fbb972529b2f7c861bb04175c9aa7b9cbb2a7c8a2c672de60.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3520
      • C:\Windows\SysWOW64\PING.EXE
        ping 127.0.0.1
        3⤵
        • Runs ping.exe
        PID:632
  • C:\Windows\system32\MusNotifyIcon.exe
    %systemroot%\system32\MusNotifyIcon.exe NotifyTrayIcon 13
    1⤵
    • Checks processor information in registry
    PID:3140
  • 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:3448
  • 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:3416

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

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

    3bad9b7d70bb8d25a016796f3f87cc6e

    SHA1

    ce71a8d892099f5cd3fea4fb858feab354aa7b1d

    SHA256

    3948f023f3ed96515af455c5e3c28079049c9a8d15a0a994db1a63f0a1caf782

    SHA512

    4b6adf3ab4317f501d0a69cb85b0fddb56b339950146a4f38fa352909a884fc73721225277dd9db35ca429877cd3a3672279c4b5944d63b681b5451bcccfffab

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

    3bad9b7d70bb8d25a016796f3f87cc6e

    SHA1

    ce71a8d892099f5cd3fea4fb858feab354aa7b1d

    SHA256

    3948f023f3ed96515af455c5e3c28079049c9a8d15a0a994db1a63f0a1caf782

    SHA512

    4b6adf3ab4317f501d0a69cb85b0fddb56b339950146a4f38fa352909a884fc73721225277dd9db35ca429877cd3a3672279c4b5944d63b681b5451bcccfffab