Analysis

  • max time kernel
    170s
  • max time network
    175s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220112
  • submitted
    12-02-2022 10:52

General

  • Target

    05f49a09d64fa9e7f2e0d911afc5f00b4737f6c8ec3d0dff22959f02ae30b931.exe

  • Size

    216KB

  • MD5

    aba8458a2959c4ed245ebf1d66e2599c

  • SHA1

    70f384cb551b551b8c040cde94e3822f99d2d8bd

  • SHA256

    05f49a09d64fa9e7f2e0d911afc5f00b4737f6c8ec3d0dff22959f02ae30b931

  • SHA512

    29b3d9be016634a0310a5d76c04c14a489d61b93d777d42c11ddd7558ee7cd0408d6cccf9904c7f0d9ef73a3290f42175577a0d28ce5e45b8edda5386361d4e3

Malware Config

Signatures

  • Sakula

    Sakula is a remote access trojan with various capabilities.

  • Sakula Payload 4 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 2 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Modifies data under HKEY_USERS 51 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\05f49a09d64fa9e7f2e0d911afc5f00b4737f6c8ec3d0dff22959f02ae30b931.exe
    "C:\Users\Admin\AppData\Local\Temp\05f49a09d64fa9e7f2e0d911afc5f00b4737f6c8ec3d0dff22959f02ae30b931.exe"
    1⤵
    • Checks computer location settings
    • Adds Run key to start application
    • Suspicious use of WriteProcessMemory
    PID:332
    • C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe
      C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe
      2⤵
      • Executes dropped EXE
      PID:1488
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c ping 127.0.0.1 & del /q "C:\Users\Admin\AppData\Local\Temp\05f49a09d64fa9e7f2e0d911afc5f00b4737f6c8ec3d0dff22959f02ae30b931.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3648
      • C:\Windows\SysWOW64\PING.EXE
        ping 127.0.0.1
        3⤵
        • Runs ping.exe
        PID:1620
  • C:\Windows\system32\MusNotifyIcon.exe
    %systemroot%\system32\MusNotifyIcon.exe NotifyTrayIcon 13
    1⤵
    • Checks processor information in registry
    PID:756
  • 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:760
  • 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:1908

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

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

    b6332729d6ebc22f2da7fababa8ad06e

    SHA1

    08e953cc15f2846a6107c64d1268421ff87304c6

    SHA256

    36e27cb48fc35d7e3ff345b95216c68a229c16d52f637f61090921e27797c9e6

    SHA512

    53da7054e3acaca9a05c9399a0729ae0a21e38764b88f9fee5d113052661d6fd300f4e6c5eea682ad50032a0aa371ba71bb1075eb895068dde2d3882f4649432

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

    b6332729d6ebc22f2da7fababa8ad06e

    SHA1

    08e953cc15f2846a6107c64d1268421ff87304c6

    SHA256

    36e27cb48fc35d7e3ff345b95216c68a229c16d52f637f61090921e27797c9e6

    SHA512

    53da7054e3acaca9a05c9399a0729ae0a21e38764b88f9fee5d113052661d6fd300f4e6c5eea682ad50032a0aa371ba71bb1075eb895068dde2d3882f4649432

  • memory/332-132-0x0000000000400000-0x0000000000420000-memory.dmp
    Filesize

    128KB

  • memory/1488-133-0x0000000000400000-0x0000000000420000-memory.dmp
    Filesize

    128KB