Analysis

  • max time kernel
    172s
  • max time network
    173s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220112
  • submitted
    12-02-2022 05:02

General

  • Target

    13d0a03d511016861dd1a509031b3c1d8ba9abd6da50ce8dfc264ab22db6f998.exe

  • Size

    151KB

  • MD5

    cd42d1ed96b99ef5078d6a6873afdf48

  • SHA1

    07b8d9524b57bf36d6fc0e736331e3aa9346adc4

  • SHA256

    13d0a03d511016861dd1a509031b3c1d8ba9abd6da50ce8dfc264ab22db6f998

  • SHA512

    889528a8216210d11a8157a2459e89300f12fbb7664f1e85ddc132b1797066133a2215a29793be85b73c00546eddcc9fc259b0e1ba0c9ec57fce323642be458f

Malware Config

Signatures

  • Sakula

    Sakula is a remote access trojan with various capabilities.

  • Sakula Payload 2 IoCs
  • suricata: ET MALWARE SUSPICIOUS UA (iexplore)

    suricata: ET MALWARE SUSPICIOUS UA (iexplore)

  • suricata: ET MALWARE Sakula/Mivast RAT CnC Beacon 1

    suricata: ET MALWARE Sakula/Mivast RAT CnC Beacon 1

  • 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 50 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\13d0a03d511016861dd1a509031b3c1d8ba9abd6da50ce8dfc264ab22db6f998.exe
    "C:\Users\Admin\AppData\Local\Temp\13d0a03d511016861dd1a509031b3c1d8ba9abd6da50ce8dfc264ab22db6f998.exe"
    1⤵
    • Checks computer location settings
    • Adds Run key to start application
    • Suspicious use of WriteProcessMemory
    PID:1780
    • C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe
      C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe
      2⤵
      • Executes dropped EXE
      PID:3988
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c ping 127.0.0.1 & del /q "C:\Users\Admin\AppData\Local\Temp\13d0a03d511016861dd1a509031b3c1d8ba9abd6da50ce8dfc264ab22db6f998.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3232
      • C:\Windows\SysWOW64\PING.EXE
        ping 127.0.0.1
        3⤵
        • Runs ping.exe
        PID:2944
  • C:\Windows\system32\MusNotifyIcon.exe
    %systemroot%\system32\MusNotifyIcon.exe NotifyTrayIcon 13
    1⤵
    • Checks processor information in registry
    PID:2116
  • 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:4012
  • 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:1948

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

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

    MD5

    525c0a39883bf0a2e3986335e85303ce

    SHA1

    aef753c600f8a81dd9259199c7406d78dcd145e3

    SHA256

    70ec02ac375d64b92e72d3a482683768660c9559228ae97da012b52c01df771d

    SHA512

    970b923740a64f39f932058313abc25cd66eda006430e379926f8e70f14aff4af752ba60d17baaa919839744bcda7669538f7aff40f2f914faaf01743c4143d5

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

    MD5

    525c0a39883bf0a2e3986335e85303ce

    SHA1

    aef753c600f8a81dd9259199c7406d78dcd145e3

    SHA256

    70ec02ac375d64b92e72d3a482683768660c9559228ae97da012b52c01df771d

    SHA512

    970b923740a64f39f932058313abc25cd66eda006430e379926f8e70f14aff4af752ba60d17baaa919839744bcda7669538f7aff40f2f914faaf01743c4143d5