Analysis

  • max time kernel
    174s
  • max time network
    180s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220112
  • submitted
    12-02-2022 05:18

General

  • Target

    131cfc3ef15fa42f31431e08c4537d11aa4ed86ab1e6592651109e8f29c653c7.exe

  • Size

    101KB

  • MD5

    949756c47e80702f46e7502085061210

  • SHA1

    aa02bf8efbcfe706580517a19b01c019e8221805

  • SHA256

    131cfc3ef15fa42f31431e08c4537d11aa4ed86ab1e6592651109e8f29c653c7

  • SHA512

    d376ab328ecf60f82c0561063dc79af8eb4f805495dce1558e38158063eef768619ab74e72bbd62bcf6bb6a519db23ad38fc042f0908ee6c41bbed022512b0f6

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\131cfc3ef15fa42f31431e08c4537d11aa4ed86ab1e6592651109e8f29c653c7.exe
    "C:\Users\Admin\AppData\Local\Temp\131cfc3ef15fa42f31431e08c4537d11aa4ed86ab1e6592651109e8f29c653c7.exe"
    1⤵
    • Checks computer location settings
    • Adds Run key to start application
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2980
    • C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe
      C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe
      2⤵
      • Executes dropped EXE
      PID:648
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c ping 127.0.0.1 & del /q "C:\Users\Admin\AppData\Local\Temp\131cfc3ef15fa42f31431e08c4537d11aa4ed86ab1e6592651109e8f29c653c7.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1284
      • C:\Windows\SysWOW64\PING.EXE
        ping 127.0.0.1
        3⤵
        • Runs ping.exe
        PID:3452
  • C:\Windows\system32\MusNotifyIcon.exe
    %systemroot%\system32\MusNotifyIcon.exe NotifyTrayIcon 13
    1⤵
    • Checks processor information in registry
    PID:3816
  • 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:212
  • 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:3812

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

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

    MD5

    3a768f2bc5c4f18dcf12de634b32877e

    SHA1

    866feddc00dc0bc841aa2c8d0c8dfdb373163edd

    SHA256

    4d82f8d2f5b3b320235e42ca7b08749bda58d35ca5b9a2eb47d6fcc3edc17a78

    SHA512

    fea46c1d66b46f40776a9eef9e884884e9e6383ec9cae8ec4f73ff90bb36780e7f46c9afe9a391281227de1710af79924bf017330294d19a492cb1e526a22ad8

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

    MD5

    3a768f2bc5c4f18dcf12de634b32877e

    SHA1

    866feddc00dc0bc841aa2c8d0c8dfdb373163edd

    SHA256

    4d82f8d2f5b3b320235e42ca7b08749bda58d35ca5b9a2eb47d6fcc3edc17a78

    SHA512

    fea46c1d66b46f40776a9eef9e884884e9e6383ec9cae8ec4f73ff90bb36780e7f46c9afe9a391281227de1710af79924bf017330294d19a492cb1e526a22ad8