Analysis

  • max time kernel
    181s
  • max time network
    195s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220112
  • submitted
    12-02-2022 03:25

General

  • Target

    17b416681edecf9b35c282a9e48deec9584f09c30ccad4f66f2b85489e1e6009.exe

  • Size

    191KB

  • MD5

    1704673dd1fd7b76e8eb5189b04f884a

  • SHA1

    6bd43df165665140300823c31d7097eadc24d746

  • SHA256

    17b416681edecf9b35c282a9e48deec9584f09c30ccad4f66f2b85489e1e6009

  • SHA512

    d96ffbd978ac87ef872b9d85d9ccfec5c2a594a46d94dae1d855e0668142f213cbde35031029f9e76383eafce9b6a0b648f609f1a0d575b758e021cdb5516e44

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\17b416681edecf9b35c282a9e48deec9584f09c30ccad4f66f2b85489e1e6009.exe
    "C:\Users\Admin\AppData\Local\Temp\17b416681edecf9b35c282a9e48deec9584f09c30ccad4f66f2b85489e1e6009.exe"
    1⤵
    • Checks computer location settings
    • Adds Run key to start application
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2064
    • C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe
      C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe
      2⤵
      • Executes dropped EXE
      PID:3856
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c ping 127.0.0.1 & del /q "C:\Users\Admin\AppData\Local\Temp\17b416681edecf9b35c282a9e48deec9584f09c30ccad4f66f2b85489e1e6009.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4048
      • C:\Windows\SysWOW64\PING.EXE
        ping 127.0.0.1
        3⤵
        • Runs ping.exe
        PID:3080
  • C:\Windows\system32\MusNotifyIcon.exe
    %systemroot%\system32\MusNotifyIcon.exe NotifyTrayIcon 13
    1⤵
    • Checks processor information in registry
    PID:1972
  • 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:3548
  • 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:808

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

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

    MD5

    bc5be966414217e0f9ddcebcfa99b4d7

    SHA1

    9a5374fb29fe492faf00441adcd5aac99f30f811

    SHA256

    50a40673d74e7c02daf97170410171f1e985be2bc30fcdfe74bdf3508c95108f

    SHA512

    3a75f241233a491b1768f3c8068a1bcd3389f45aedc190151164f83ebca837cd5c7d924bf2da2b301e2da0b25ec2187524a229f6eb04f2d3f65dc3d6a409a990

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

    MD5

    bc5be966414217e0f9ddcebcfa99b4d7

    SHA1

    9a5374fb29fe492faf00441adcd5aac99f30f811

    SHA256

    50a40673d74e7c02daf97170410171f1e985be2bc30fcdfe74bdf3508c95108f

    SHA512

    3a75f241233a491b1768f3c8068a1bcd3389f45aedc190151164f83ebca837cd5c7d924bf2da2b301e2da0b25ec2187524a229f6eb04f2d3f65dc3d6a409a990