Analysis

  • max time kernel
    195s
  • max time network
    207s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220112
  • submitted
    12-02-2022 03:40

General

  • Target

    1708e3af703e92b6479c4f51ef8b72ef83fa6043a116ef2f4adf7abdf16b7a4b.exe

  • Size

    60KB

  • MD5

    3fc2f2819b63dcd567fd097605ccb041

  • SHA1

    ea328f52f90c304b2776932bd464928bc3d80730

  • SHA256

    1708e3af703e92b6479c4f51ef8b72ef83fa6043a116ef2f4adf7abdf16b7a4b

  • SHA512

    05b1847d27bad5828df9381924267a9a508a23b0ad7ad32fc71b94a33df049ef3577a3d54001b0cb66d716a3232b35789584e49a2e3a54ed8eb903849a74b7d3

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 53 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\1708e3af703e92b6479c4f51ef8b72ef83fa6043a116ef2f4adf7abdf16b7a4b.exe
    "C:\Users\Admin\AppData\Local\Temp\1708e3af703e92b6479c4f51ef8b72ef83fa6043a116ef2f4adf7abdf16b7a4b.exe"
    1⤵
    • Checks computer location settings
    • Adds Run key to start application
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2244
    • C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe
      C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe
      2⤵
      • Executes dropped EXE
      PID:3992
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c ping 127.0.0.1 & del /q "C:\Users\Admin\AppData\Local\Temp\1708e3af703e92b6479c4f51ef8b72ef83fa6043a116ef2f4adf7abdf16b7a4b.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2340
      • C:\Windows\SysWOW64\PING.EXE
        ping 127.0.0.1
        3⤵
        • Runs ping.exe
        PID:3288
  • C:\Windows\system32\MusNotifyIcon.exe
    %systemroot%\system32\MusNotifyIcon.exe NotifyTrayIcon 13
    1⤵
    • Checks processor information in registry
    PID:2920
  • 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:3852
  • 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:2492

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

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

    MD5

    80306ca616ebd414ec1d62c5f2c2d146

    SHA1

    e7af8a9c20048cea9a19d2b7bf9928111dc204e0

    SHA256

    639c9b7bdc336ece5bc16ed3f056f88041c48f94036301f3586b1fed34689dd6

    SHA512

    7c61c0fb15327517d307fe91c2133b03d2db627705bfdb3cdf8d4a214bf1daa2d349ef2cbf07fa6a5c941fb0e62fcb0617e631a0b9238df53d9ed2cda114ff7c

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

    MD5

    80306ca616ebd414ec1d62c5f2c2d146

    SHA1

    e7af8a9c20048cea9a19d2b7bf9928111dc204e0

    SHA256

    639c9b7bdc336ece5bc16ed3f056f88041c48f94036301f3586b1fed34689dd6

    SHA512

    7c61c0fb15327517d307fe91c2133b03d2db627705bfdb3cdf8d4a214bf1daa2d349ef2cbf07fa6a5c941fb0e62fcb0617e631a0b9238df53d9ed2cda114ff7c