Analysis

  • max time kernel
    165s
  • max time network
    181s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220112
  • submitted
    12-02-2022 06:13

General

  • Target

    1091d02d44cd88f2ac55fdad18b54f742157c3c79d1898fa40c15e8ff56b7a77.exe

  • Size

    176KB

  • MD5

    893ccab9662414e2d60e7ca698b51caf

  • SHA1

    3765a5f512f4e4e3a61d4f911c193e0a4a6ddfaa

  • SHA256

    1091d02d44cd88f2ac55fdad18b54f742157c3c79d1898fa40c15e8ff56b7a77

  • SHA512

    c4834e4098deb978546a6a2f35cb3399bf99228f2346980780a0cea5e8c56c0b5b7e5d19d989dea461d1de373211f60d8685a1bdcab47bf6746021fdf4a0b173

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 50 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\1091d02d44cd88f2ac55fdad18b54f742157c3c79d1898fa40c15e8ff56b7a77.exe
    "C:\Users\Admin\AppData\Local\Temp\1091d02d44cd88f2ac55fdad18b54f742157c3c79d1898fa40c15e8ff56b7a77.exe"
    1⤵
    • Checks computer location settings
    • Adds Run key to start application
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1600
    • C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe
      C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe
      2⤵
      • Executes dropped EXE
      PID:3284
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c ping 127.0.0.1 & del /q "C:\Users\Admin\AppData\Local\Temp\1091d02d44cd88f2ac55fdad18b54f742157c3c79d1898fa40c15e8ff56b7a77.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1896
      • C:\Windows\SysWOW64\PING.EXE
        ping 127.0.0.1
        3⤵
        • Runs ping.exe
        PID:3004
  • C:\Windows\system32\MusNotifyIcon.exe
    %systemroot%\system32\MusNotifyIcon.exe NotifyTrayIcon 13
    1⤵
    • Checks processor information in registry
    PID:3300
  • 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:1500
  • 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:2572

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

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

    MD5

    358d697a90b2f55496d4c92095cf44e3

    SHA1

    4ed88ca4840aaac956150bfcc4ad9871902e0885

    SHA256

    7f0c0ad4286e4aa7754b2dcc9149456c5d40a53b46442df2335742a6c2a232f1

    SHA512

    89f37c0d9275c7c5f420352f3395074dad8087816c376b2c99840f7206dbfe0961c356f034ff3782882b1714bb77aadd0d22e228cc5763f4c2b3d8bc560059b4

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

    MD5

    358d697a90b2f55496d4c92095cf44e3

    SHA1

    4ed88ca4840aaac956150bfcc4ad9871902e0885

    SHA256

    7f0c0ad4286e4aa7754b2dcc9149456c5d40a53b46442df2335742a6c2a232f1

    SHA512

    89f37c0d9275c7c5f420352f3395074dad8087816c376b2c99840f7206dbfe0961c356f034ff3782882b1714bb77aadd0d22e228cc5763f4c2b3d8bc560059b4

  • memory/1600-132-0x0000000000400000-0x0000000000420000-memory.dmp

    Filesize

    128KB

  • memory/3284-133-0x0000000000400000-0x0000000000420000-memory.dmp

    Filesize

    128KB