Analysis

  • max time kernel
    167s
  • max time network
    186s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220112
  • submitted
    12-02-2022 08:21

General

  • Target

    0b40c92d4dc1f27579ca2b1ee544ba61669dd0fab6c95bf012b6f0bba589872e.exe

  • Size

    92KB

  • MD5

    3ba39ccccbe6c1137b57a0c24737600e

  • SHA1

    0b43e167a13b7908ed39bddca16beac0ad0589bd

  • SHA256

    0b40c92d4dc1f27579ca2b1ee544ba61669dd0fab6c95bf012b6f0bba589872e

  • SHA512

    8062fbd25eaab9bfa60aff5e853fa9428f0b59e46e0f1d016a54c1bb5c7df1ef604bdb59dd0338cdd0db7f23c9ff49cea84c568f407dea577ecc3de2cac3d829

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 53 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\0b40c92d4dc1f27579ca2b1ee544ba61669dd0fab6c95bf012b6f0bba589872e.exe
    "C:\Users\Admin\AppData\Local\Temp\0b40c92d4dc1f27579ca2b1ee544ba61669dd0fab6c95bf012b6f0bba589872e.exe"
    1⤵
    • Checks computer location settings
    • Adds Run key to start application
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4028
    • C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe
      C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe
      2⤵
      • Executes dropped EXE
      PID:812
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c ping 127.0.0.1 & del /q "C:\Users\Admin\AppData\Local\Temp\0b40c92d4dc1f27579ca2b1ee544ba61669dd0fab6c95bf012b6f0bba589872e.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2512
      • C:\Windows\SysWOW64\PING.EXE
        ping 127.0.0.1
        3⤵
        • Runs ping.exe
        PID:2276
  • C:\Windows\system32\MusNotifyIcon.exe
    %systemroot%\system32\MusNotifyIcon.exe NotifyTrayIcon 13
    1⤵
    • Checks processor information in registry
    PID:3392
  • 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:880
  • 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:3720

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

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

    9ffb12c0f647692934c8ef2cadfc3e0a

    SHA1

    43f9131b33e153e1ad9cd81edbc1f32a0de1034b

    SHA256

    2b6d11efd4b342ce3db3a67da06e5e818a6609c33c9bcaab5149965e2883282a

    SHA512

    fb81250291e161db8efb9b4fe47f6a0e6352be594deb80120800a85668eb5ad886a0628bd6ad51c6fe26fbc5baa35bb3de01124b87aa1e4863574ace6a9b9d65

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

    9ffb12c0f647692934c8ef2cadfc3e0a

    SHA1

    43f9131b33e153e1ad9cd81edbc1f32a0de1034b

    SHA256

    2b6d11efd4b342ce3db3a67da06e5e818a6609c33c9bcaab5149965e2883282a

    SHA512

    fb81250291e161db8efb9b4fe47f6a0e6352be594deb80120800a85668eb5ad886a0628bd6ad51c6fe26fbc5baa35bb3de01124b87aa1e4863574ace6a9b9d65