Analysis

  • max time kernel
    167s
  • max time network
    185s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220112
  • submitted
    12-02-2022 11:32

General

  • Target

    042a51bcc2d0726338129404a7a47abcf7b230a0c43df3b98288141007d14f04.exe

  • Size

    36KB

  • MD5

    f8f2ad0a8b6c8a3ede5e32f30399d10f

  • SHA1

    3029478a37e94804189116bbb350d9c96e144292

  • SHA256

    042a51bcc2d0726338129404a7a47abcf7b230a0c43df3b98288141007d14f04

  • SHA512

    d46e3d8b12addd6953ed372ac944c644f681b3d9f9c76490114b04beeac54cd1ec7232dd26334e3a793161ebb8f99acc83062db0a97920efdff0c22f26ff519a

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 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\042a51bcc2d0726338129404a7a47abcf7b230a0c43df3b98288141007d14f04.exe
    "C:\Users\Admin\AppData\Local\Temp\042a51bcc2d0726338129404a7a47abcf7b230a0c43df3b98288141007d14f04.exe"
    1⤵
    • Checks computer location settings
    • Adds Run key to start application
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3612
    • C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe
      C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe
      2⤵
      • Executes dropped EXE
      PID:3260
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c ping 127.0.0.1 & del /q "C:\Users\Admin\AppData\Local\Temp\042a51bcc2d0726338129404a7a47abcf7b230a0c43df3b98288141007d14f04.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2380
      • C:\Windows\SysWOW64\PING.EXE
        ping 127.0.0.1
        3⤵
        • Runs ping.exe
        PID:3940
  • C:\Windows\system32\MusNotifyIcon.exe
    %systemroot%\system32\MusNotifyIcon.exe NotifyTrayIcon 13
    1⤵
    • Checks processor information in registry
    PID:3556
  • 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:2612
  • 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:1240

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

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

    2840fc912a200dff09759aa508fcbbbf

    SHA1

    4e86e4fbfaabb85e8a782c8b800f960b19a333dc

    SHA256

    6a8acd31a24c0761bc01318d0cadfceba82aa677839eab919fc0aa2e45ed5d3b

    SHA512

    9b8a2b9ac5dc018ed85a5c3d508799847b0dc16ef81fe8c87f4d61f7e8ee6c29401b7acb9efbc19b52984195eb3616bde6edb8f1479cd25277bebca16f82c464

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

    2840fc912a200dff09759aa508fcbbbf

    SHA1

    4e86e4fbfaabb85e8a782c8b800f960b19a333dc

    SHA256

    6a8acd31a24c0761bc01318d0cadfceba82aa677839eab919fc0aa2e45ed5d3b

    SHA512

    9b8a2b9ac5dc018ed85a5c3d508799847b0dc16ef81fe8c87f4d61f7e8ee6c29401b7acb9efbc19b52984195eb3616bde6edb8f1479cd25277bebca16f82c464