Analysis

  • max time kernel
    179s
  • max time network
    180s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220112
  • submitted
    12-02-2022 10:09

General

  • Target

    07fc84b90f27e51cdd5289edb2572e75d2d2d027b8ee9a8dec037dae8b7f5c24.exe

  • Size

    216KB

  • MD5

    8d6b792d98ae99f8b019e922ae79f9e0

  • SHA1

    a42198f1314d8797b4d9f084fe8a4048d7ed1fe1

  • SHA256

    07fc84b90f27e51cdd5289edb2572e75d2d2d027b8ee9a8dec037dae8b7f5c24

  • SHA512

    8a94144124d3aa74cdb474b59e382111e06c45bbbe10322e7506f84f64ba3faff26b051c49ef4669a6ccf793f7ad9a00868843e77a6d57d26edfd7a934f60100

Malware Config

Signatures

  • Sakula

    Sakula is a remote access trojan with various capabilities.

  • Sakula Payload 4 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 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\07fc84b90f27e51cdd5289edb2572e75d2d2d027b8ee9a8dec037dae8b7f5c24.exe
    "C:\Users\Admin\AppData\Local\Temp\07fc84b90f27e51cdd5289edb2572e75d2d2d027b8ee9a8dec037dae8b7f5c24.exe"
    1⤵
    • Checks computer location settings
    • Adds Run key to start application
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3876
    • C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe
      C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe
      2⤵
      • Executes dropped EXE
      PID:1932
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c ping 127.0.0.1 & del /q "C:\Users\Admin\AppData\Local\Temp\07fc84b90f27e51cdd5289edb2572e75d2d2d027b8ee9a8dec037dae8b7f5c24.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3248
      • C:\Windows\SysWOW64\PING.EXE
        ping 127.0.0.1
        3⤵
        • Runs ping.exe
        PID:3476
  • C:\Windows\system32\MusNotifyIcon.exe
    %systemroot%\system32\MusNotifyIcon.exe NotifyTrayIcon 13
    1⤵
    • Checks processor information in registry
    PID:2400
  • 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:460
  • 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:2468

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe
    MD5

    39e2e54f6086a494030000895eee797c

    SHA1

    250ac7a69cf0b16839ebaa7f0a89361b29825d92

    SHA256

    3d2312588207e1c7d4d29279803befece8edf214ddee1e4a813fd18351ece8b3

    SHA512

    6167c5c41ae7e85fd43d80d4e711c676bab469f38bd0d1d3e469cc5730bbc7e23b0537da479067d2f611308087a8d9d08c43451f5fd482f76a5fe853dafc552c

  • C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe
    MD5

    39e2e54f6086a494030000895eee797c

    SHA1

    250ac7a69cf0b16839ebaa7f0a89361b29825d92

    SHA256

    3d2312588207e1c7d4d29279803befece8edf214ddee1e4a813fd18351ece8b3

    SHA512

    6167c5c41ae7e85fd43d80d4e711c676bab469f38bd0d1d3e469cc5730bbc7e23b0537da479067d2f611308087a8d9d08c43451f5fd482f76a5fe853dafc552c

  • memory/1932-133-0x0000000000400000-0x0000000000420000-memory.dmp
    Filesize

    128KB

  • memory/3876-132-0x0000000000400000-0x0000000000420000-memory.dmp
    Filesize

    128KB