Analysis

  • max time kernel
    155s
  • max time network
    176s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220112
  • submitted
    12-02-2022 02:55

General

  • Target

    190b0ee88e4f242de9bb1702809a17954a7b2195c4c8157e169acbd7ab32eab1.exe

  • Size

    36KB

  • MD5

    fda028804ee89f5ada1bd4cb33d242c6

  • SHA1

    dc04f95be741ce51e16523fe0733426871f53279

  • SHA256

    190b0ee88e4f242de9bb1702809a17954a7b2195c4c8157e169acbd7ab32eab1

  • SHA512

    6a2fb247164c81a0ecc1cefab03ff88f8054039b354b7cfdb95fdd60861655f73c3081394280da29d66e7101ebfeb942b4d45dab1b8e88583d17a96a85f3e312

Malware Config

Signatures

  • Sakula

    Sakula is a remote access trojan with various capabilities.

  • 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 54 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\190b0ee88e4f242de9bb1702809a17954a7b2195c4c8157e169acbd7ab32eab1.exe
    "C:\Users\Admin\AppData\Local\Temp\190b0ee88e4f242de9bb1702809a17954a7b2195c4c8157e169acbd7ab32eab1.exe"
    1⤵
    • Checks computer location settings
    • Adds Run key to start application
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2988
    • C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe
      C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe
      2⤵
      • Executes dropped EXE
      PID:812
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c ping 127.0.0.1 & del /q "C:\Users\Admin\AppData\Local\Temp\190b0ee88e4f242de9bb1702809a17954a7b2195c4c8157e169acbd7ab32eab1.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:848
      • C:\Windows\SysWOW64\PING.EXE
        ping 127.0.0.1
        3⤵
        • Runs ping.exe
        PID:3196
  • C:\Windows\system32\MusNotifyIcon.exe
    %systemroot%\system32\MusNotifyIcon.exe NotifyTrayIcon 13
    1⤵
    • Checks processor information in registry
    PID:3952
  • 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:728
  • 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:3372

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

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

    MD5

    1491b7f0493243134830e15d70d121f6

    SHA1

    89f9d57564ae53e303d71d29d864a753300437d5

    SHA256

    cb547b6631ca24179d5704daf5ffbfce0242886b9093c2109d2bb05e1541d63d

    SHA512

    d5dcd49fdd80e253efff209df1a7977db4a78de65e2e68bc482e49712b106bed849a551dd44543e01c3d37e9e4a4fc4275212d591adc8497073b66c7e0836151

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

    MD5

    1491b7f0493243134830e15d70d121f6

    SHA1

    89f9d57564ae53e303d71d29d864a753300437d5

    SHA256

    cb547b6631ca24179d5704daf5ffbfce0242886b9093c2109d2bb05e1541d63d

    SHA512

    d5dcd49fdd80e253efff209df1a7977db4a78de65e2e68bc482e49712b106bed849a551dd44543e01c3d37e9e4a4fc4275212d591adc8497073b66c7e0836151