Analysis

  • max time kernel
    166s
  • max time network
    165s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220112
  • submitted
    12-02-2022 11:53

General

  • Target

    032124fdd2697b2f94dda58ff2b2ca275d7bf7467ce22c119c7521c15752fa6d.exe

  • Size

    101KB

  • MD5

    a33efe91398284a5bddea2ebeb7fa642

  • SHA1

    a68def0c4c38d63d7f5649d50e7d96bd859e1c0a

  • SHA256

    032124fdd2697b2f94dda58ff2b2ca275d7bf7467ce22c119c7521c15752fa6d

  • SHA512

    d80f785d8e4d107ca65021e1073c0d578763ff26e4576ac2c5304a13bd7837cf563621b360034b8d560cb6a2a1fea17fc0b22a1d0847c238c30a194d2c3cf314

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 49 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\032124fdd2697b2f94dda58ff2b2ca275d7bf7467ce22c119c7521c15752fa6d.exe
    "C:\Users\Admin\AppData\Local\Temp\032124fdd2697b2f94dda58ff2b2ca275d7bf7467ce22c119c7521c15752fa6d.exe"
    1⤵
    • Checks computer location settings
    • Adds Run key to start application
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:908
    • C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe
      C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe
      2⤵
      • Executes dropped EXE
      PID:4036
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c ping 127.0.0.1 & del /q "C:\Users\Admin\AppData\Local\Temp\032124fdd2697b2f94dda58ff2b2ca275d7bf7467ce22c119c7521c15752fa6d.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3492
      • C:\Windows\SysWOW64\PING.EXE
        ping 127.0.0.1
        3⤵
        • Runs ping.exe
        PID:2000
  • C:\Windows\system32\MusNotifyIcon.exe
    %systemroot%\system32\MusNotifyIcon.exe NotifyTrayIcon 13
    1⤵
    • Checks processor information in registry
    PID:1220
  • 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:2152
  • 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:1840

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

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

    3bf313ac523b8c3274648f7c2d60eafc

    SHA1

    26bd9ff4ddbf914722882f35d215b11412db36f8

    SHA256

    e8fc2d1f321f7bd4e5f4b4b6cca94e25996954c25dbc5e8c440bafdfc062a93b

    SHA512

    f35c4ea768b240b9b1f880ecb663d045afdcf94179939b52763dbe132eab75e3b33c14627a2fae8db5238baea65e8a67445e450f6c2790fc38807b2ea1d7b109

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

    3bf313ac523b8c3274648f7c2d60eafc

    SHA1

    26bd9ff4ddbf914722882f35d215b11412db36f8

    SHA256

    e8fc2d1f321f7bd4e5f4b4b6cca94e25996954c25dbc5e8c440bafdfc062a93b

    SHA512

    f35c4ea768b240b9b1f880ecb663d045afdcf94179939b52763dbe132eab75e3b33c14627a2fae8db5238baea65e8a67445e450f6c2790fc38807b2ea1d7b109