Analysis

  • max time kernel
    168s
  • max time network
    175s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220112
  • submitted
    12-02-2022 06:04

General

  • Target

    10f376fadd8e3d4ef4a8c3d5b87e936997c30350032f6056ac4648ed057c11b7.exe

  • Size

    191KB

  • MD5

    aa4f63aed98749ec4ed5f8d7687320bf

  • SHA1

    6f520b94e4a6888d4ef5c43d1032b1d965c6b305

  • SHA256

    10f376fadd8e3d4ef4a8c3d5b87e936997c30350032f6056ac4648ed057c11b7

  • SHA512

    2bb9c0bf7a7b7e317a5a5544862777cbefeab17010689acdc33fb78fd4409c0f4fdfd25bb57feb174045d19447fb644cad52c7bafda0d6b53b3d8013d26cfa40

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 55 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\10f376fadd8e3d4ef4a8c3d5b87e936997c30350032f6056ac4648ed057c11b7.exe
    "C:\Users\Admin\AppData\Local\Temp\10f376fadd8e3d4ef4a8c3d5b87e936997c30350032f6056ac4648ed057c11b7.exe"
    1⤵
    • Checks computer location settings
    • Adds Run key to start application
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1108
    • C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe
      C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe
      2⤵
      • Executes dropped EXE
      PID:3404
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c ping 127.0.0.1 & del /q "C:\Users\Admin\AppData\Local\Temp\10f376fadd8e3d4ef4a8c3d5b87e936997c30350032f6056ac4648ed057c11b7.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2328
      • C:\Windows\SysWOW64\PING.EXE
        ping 127.0.0.1
        3⤵
        • Runs ping.exe
        PID:224
  • C:\Windows\system32\MusNotifyIcon.exe
    %systemroot%\system32\MusNotifyIcon.exe NotifyTrayIcon 13
    1⤵
    • Checks processor information in registry
    PID:1524
  • 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:2568
  • 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:2144

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

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

    MD5

    22db89dcf394d2aeb899cb6f57da3112

    SHA1

    8c8c7bd70c19730559f744074da4c86c7c1ec50d

    SHA256

    de8980d4f480895bc9c9f6d1a507b213e51ec8dda2bc2d0aca7dd1f0f38edd63

    SHA512

    94131e6745cda9cdf69e4416401040e84be0d09c55f86c8cabe99c3973aef45e4b6182edc063a9437483752d5e0e8c39eccda31c7a4e0bf68c0f9c61563b36b4

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

    MD5

    22db89dcf394d2aeb899cb6f57da3112

    SHA1

    8c8c7bd70c19730559f744074da4c86c7c1ec50d

    SHA256

    de8980d4f480895bc9c9f6d1a507b213e51ec8dda2bc2d0aca7dd1f0f38edd63

    SHA512

    94131e6745cda9cdf69e4416401040e84be0d09c55f86c8cabe99c3973aef45e4b6182edc063a9437483752d5e0e8c39eccda31c7a4e0bf68c0f9c61563b36b4