Analysis

  • max time kernel
    150s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220112
  • submitted
    12-02-2022 06:56

General

  • Target

    0ef7931869c63a6fd287cb2758364b3911934ad234e0f41685c4df6acf729c2a.exe

  • Size

    150KB

  • MD5

    c4b885c831c99caca65266bb958497c8

  • SHA1

    d18f7a145403d914582d7fa14aa49b8a2955da2f

  • SHA256

    0ef7931869c63a6fd287cb2758364b3911934ad234e0f41685c4df6acf729c2a

  • SHA512

    bef7f0d03810d236e507c6cfb5517da719bccc71064961117f732d2e23e8d692a6484e354b8cd2301fc66fe7dad1169e2bce00992c63f9ff01955ee8736625f8

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\0ef7931869c63a6fd287cb2758364b3911934ad234e0f41685c4df6acf729c2a.exe
    "C:\Users\Admin\AppData\Local\Temp\0ef7931869c63a6fd287cb2758364b3911934ad234e0f41685c4df6acf729c2a.exe"
    1⤵
    • Checks computer location settings
    • Adds Run key to start application
    • Suspicious use of WriteProcessMemory
    PID:3348
    • C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe
      C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe
      2⤵
      • Executes dropped EXE
      PID:3476
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c ping 127.0.0.1 & del /q "C:\Users\Admin\AppData\Local\Temp\0ef7931869c63a6fd287cb2758364b3911934ad234e0f41685c4df6acf729c2a.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4016
      • C:\Windows\SysWOW64\PING.EXE
        ping 127.0.0.1
        3⤵
        • Runs ping.exe
        PID:2344
  • C:\Windows\system32\MusNotifyIcon.exe
    %systemroot%\system32\MusNotifyIcon.exe NotifyTrayIcon 13
    1⤵
    • Checks processor information in registry
    PID:1880
  • 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:1232
  • 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:3556

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

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

    MD5

    81dd74c4fcc0b4e3d51920ecded23dc1

    SHA1

    0060f4d546891d4965415fb4a3edcb5e53c0a2a0

    SHA256

    5b057121104e21105248a3fa24e762ab8d90da9684398ea0dddfe706650ace5d

    SHA512

    ec3e374d95e34cdad270d51e53aba6a8f00cbeda334feea9e95fc5a3ff6de945ebd261aa5594ec9b617a19de3a5422252215fcebd3cd7febe81cdea8b06b3002

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

    MD5

    81dd74c4fcc0b4e3d51920ecded23dc1

    SHA1

    0060f4d546891d4965415fb4a3edcb5e53c0a2a0

    SHA256

    5b057121104e21105248a3fa24e762ab8d90da9684398ea0dddfe706650ace5d

    SHA512

    ec3e374d95e34cdad270d51e53aba6a8f00cbeda334feea9e95fc5a3ff6de945ebd261aa5594ec9b617a19de3a5422252215fcebd3cd7febe81cdea8b06b3002