Analysis

  • max time kernel
    157s
  • max time network
    179s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220112
  • submitted
    12-02-2022 02:58

General

  • Target

    18ebf5a9b5bed13955e5c2cb0b11670a883a9ae30e04f0ec8441b8ca8d52f5aa.exe

  • Size

    92KB

  • MD5

    1110a2db947ca51e01229be38ec9b52e

  • SHA1

    05e079104486cba714bb08852a4bb2c8f09309fd

  • SHA256

    18ebf5a9b5bed13955e5c2cb0b11670a883a9ae30e04f0ec8441b8ca8d52f5aa

  • SHA512

    554da8b7ac567e893192b8a8421e0c23b6304f4c5799b825cf7c1985692219154ec3ba91ed7bd8c341d5a23774a513112dc60ab7b4f13d329ae674a4b95b3492

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 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\18ebf5a9b5bed13955e5c2cb0b11670a883a9ae30e04f0ec8441b8ca8d52f5aa.exe
    "C:\Users\Admin\AppData\Local\Temp\18ebf5a9b5bed13955e5c2cb0b11670a883a9ae30e04f0ec8441b8ca8d52f5aa.exe"
    1⤵
    • Checks computer location settings
    • Adds Run key to start application
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:216
    • C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe
      C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe
      2⤵
      • Executes dropped EXE
      PID:2528
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c ping 127.0.0.1 & del /q "C:\Users\Admin\AppData\Local\Temp\18ebf5a9b5bed13955e5c2cb0b11670a883a9ae30e04f0ec8441b8ca8d52f5aa.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:364
      • C:\Windows\SysWOW64\PING.EXE
        ping 127.0.0.1
        3⤵
        • Runs ping.exe
        PID:1844
  • C:\Windows\system32\MusNotifyIcon.exe
    %systemroot%\system32\MusNotifyIcon.exe NotifyTrayIcon 13
    1⤵
    • Checks processor information in registry
    PID:3532
  • 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:3176
  • 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:3340

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

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

    MD5

    9b8732e90d176eaae9ec84ae935f7606

    SHA1

    9e4246105281d8b316834f651da7a3d4199f6851

    SHA256

    6eb386a560e00d42a02ae1cb60e2d8b4fa06bf77c89af5387706de611ad5744a

    SHA512

    800630a4b511f8359e14de48c34cf6bd9c909e5c8a34d4662621da4ebcc44ee3748cba3a4dfe9a444fe0080153c82319c092780cf6f195819ba09eaa2fe922f3

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

    MD5

    9b8732e90d176eaae9ec84ae935f7606

    SHA1

    9e4246105281d8b316834f651da7a3d4199f6851

    SHA256

    6eb386a560e00d42a02ae1cb60e2d8b4fa06bf77c89af5387706de611ad5744a

    SHA512

    800630a4b511f8359e14de48c34cf6bd9c909e5c8a34d4662621da4ebcc44ee3748cba3a4dfe9a444fe0080153c82319c092780cf6f195819ba09eaa2fe922f3