Analysis

  • max time kernel
    161s
  • max time network
    170s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220112
  • submitted
    12-02-2022 11:30

General

  • Target

    0436c4f312b735d250ceadf94f4d7d694a80554dbc0ce9a5ab5c9f5bada43439.exe

  • Size

    150KB

  • MD5

    ac1f85e59d1c3c0c624d0fa7225d629a

  • SHA1

    d1879b3f8b1432cd895a8f41e0f21fced5a97b78

  • SHA256

    0436c4f312b735d250ceadf94f4d7d694a80554dbc0ce9a5ab5c9f5bada43439

  • SHA512

    fbe3658c29d3f241f65479d4c6b6de17ebe6ec5c8033e885a8e9742c9ee01c1bd69025990d6bc467c489421f6130193b224957e9e4a34965732d6f81cb537de3

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 54 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\0436c4f312b735d250ceadf94f4d7d694a80554dbc0ce9a5ab5c9f5bada43439.exe
    "C:\Users\Admin\AppData\Local\Temp\0436c4f312b735d250ceadf94f4d7d694a80554dbc0ce9a5ab5c9f5bada43439.exe"
    1⤵
    • Checks computer location settings
    • Adds Run key to start application
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:8
    • C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe
      C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe
      2⤵
      • Executes dropped EXE
      PID:3212
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c ping 127.0.0.1 & del /q "C:\Users\Admin\AppData\Local\Temp\0436c4f312b735d250ceadf94f4d7d694a80554dbc0ce9a5ab5c9f5bada43439.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:900
      • C:\Windows\SysWOW64\PING.EXE
        ping 127.0.0.1
        3⤵
        • Runs ping.exe
        PID:4008
  • C:\Windows\system32\MusNotifyIcon.exe
    %systemroot%\system32\MusNotifyIcon.exe NotifyTrayIcon 0
    1⤵
    • Checks processor information in registry
    PID:2592
  • 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:3336
  • 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:3000

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

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

    8ced5b0e61e665b1d9db22e2d77d2937

    SHA1

    9eb1305395f2b4960f3228cafe56c9aee075922e

    SHA256

    7c278f5dba5068df0b79d992e8e479acc4eee6672b300ff29c86429a29d58c36

    SHA512

    1e95cfdfaa72e8b37fe0a5e6b3e4ae63c1284658fd4852d651eae59a543ffadadc0e88a6cc9eb261354faa402b970aebe60b317b85f684ed45a686e87fbc5be3

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

    8ced5b0e61e665b1d9db22e2d77d2937

    SHA1

    9eb1305395f2b4960f3228cafe56c9aee075922e

    SHA256

    7c278f5dba5068df0b79d992e8e479acc4eee6672b300ff29c86429a29d58c36

    SHA512

    1e95cfdfaa72e8b37fe0a5e6b3e4ae63c1284658fd4852d651eae59a543ffadadc0e88a6cc9eb261354faa402b970aebe60b317b85f684ed45a686e87fbc5be3