Analysis

  • max time kernel
    155s
  • max time network
    166s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220112
  • submitted
    12-02-2022 03:37

General

  • Target

    1729ec94765f31cb4a98d2355a447dc978d5971ef4e6eac91fdb5b65576cd70c.exe

  • Size

    79KB

  • MD5

    10cba857794592e534406575ba522107

  • SHA1

    a4f00241f9ccd0c2a717d0f5719ab9c0498797c0

  • SHA256

    1729ec94765f31cb4a98d2355a447dc978d5971ef4e6eac91fdb5b65576cd70c

  • SHA512

    ffe13fddae1ba2af87a83b5caa767a2af94c702e2ad6752abdc6a7ede37710c972e7b5c0cbe118b51975472850486821d4fd9044c2b3769624d80aee4d8ef904

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 4 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\1729ec94765f31cb4a98d2355a447dc978d5971ef4e6eac91fdb5b65576cd70c.exe
    "C:\Users\Admin\AppData\Local\Temp\1729ec94765f31cb4a98d2355a447dc978d5971ef4e6eac91fdb5b65576cd70c.exe"
    1⤵
    • Checks computer location settings
    • Adds Run key to start application
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2032
    • C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe
      C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe
      2⤵
      • Executes dropped EXE
      PID:3672
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c ping 127.0.0.1 & del /q "C:\Users\Admin\AppData\Local\Temp\1729ec94765f31cb4a98d2355a447dc978d5971ef4e6eac91fdb5b65576cd70c.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2312
      • C:\Windows\SysWOW64\PING.EXE
        ping 127.0.0.1
        3⤵
        • Runs ping.exe
        PID:3648
  • C:\Windows\system32\MusNotifyIcon.exe
    %systemroot%\system32\MusNotifyIcon.exe NotifyTrayIcon 13
    1⤵
    • Checks processor information in registry
    PID:3872
  • C:\Windows\system32\MusNotifyIcon.exe
    %systemroot%\system32\MusNotifyIcon.exe NotifyTrayIcon 13
    1⤵
    • Checks processor information in registry
    PID:2264
  • 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:2668
  • 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:1160

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

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

    MD5

    23e18ff35a747c7b710662b36e3797d8

    SHA1

    bf1d6f046e3a5dc33f4468cf990a9d954926c290

    SHA256

    765cb5e23b1090ecda9f510e0b77ef85404afb3dcbc3d2017db77a03c825956a

    SHA512

    bc1e143c0b67c3e1f30a0da387cc5288cac65045d9029fd3acfe9fd7e23f3881e9320a17de713a8b9245d1ad73b62c75a9f7331a2b5cd1957b5c3007e711bd4b

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

    MD5

    23e18ff35a747c7b710662b36e3797d8

    SHA1

    bf1d6f046e3a5dc33f4468cf990a9d954926c290

    SHA256

    765cb5e23b1090ecda9f510e0b77ef85404afb3dcbc3d2017db77a03c825956a

    SHA512

    bc1e143c0b67c3e1f30a0da387cc5288cac65045d9029fd3acfe9fd7e23f3881e9320a17de713a8b9245d1ad73b62c75a9f7331a2b5cd1957b5c3007e711bd4b