Analysis

  • max time kernel
    162s
  • max time network
    181s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220112
  • submitted
    12-02-2022 03:48

General

  • Target

    16c5574d1a647ccaf0aaf7b16fd52c5a2df29297abfc58bce40423bef89a3fc0.exe

  • Size

    60KB

  • MD5

    2dd6289b929f6aaa732dfdb74c53e018

  • SHA1

    6a844dd533d18eb32f81023fb85c76280d1fdbf3

  • SHA256

    16c5574d1a647ccaf0aaf7b16fd52c5a2df29297abfc58bce40423bef89a3fc0

  • SHA512

    36021fcc08191ce8e3ef8aa24055e34edd1df193bfb65774b91117c542af4bbf012e53acc3a8951b7d3baca9384602ef5d0ace4f00675648124b7fd574cc991b

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\16c5574d1a647ccaf0aaf7b16fd52c5a2df29297abfc58bce40423bef89a3fc0.exe
    "C:\Users\Admin\AppData\Local\Temp\16c5574d1a647ccaf0aaf7b16fd52c5a2df29297abfc58bce40423bef89a3fc0.exe"
    1⤵
    • Checks computer location settings
    • Adds Run key to start application
    • Suspicious use of WriteProcessMemory
    PID:944
    • C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe
      C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe
      2⤵
      • Executes dropped EXE
      PID:2916
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c ping 127.0.0.1 & del /q "C:\Users\Admin\AppData\Local\Temp\16c5574d1a647ccaf0aaf7b16fd52c5a2df29297abfc58bce40423bef89a3fc0.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2396
      • C:\Windows\SysWOW64\PING.EXE
        ping 127.0.0.1
        3⤵
        • Runs ping.exe
        PID:2852
  • C:\Windows\system32\MusNotifyIcon.exe
    %systemroot%\system32\MusNotifyIcon.exe NotifyTrayIcon 13
    1⤵
    • Checks processor information in registry
    PID:2096
  • 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:100
  • 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:1448

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

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

    MD5

    7fe92b75f314f358909bbd43fa2a8eb9

    SHA1

    26200e1aa1ceb63f9dc29f05cfbe21c89f881957

    SHA256

    5b0007ae7316e60bf85127d4415e2d70727704e57b1d34c7bd9869cc00d01124

    SHA512

    1f6c21f829668e23d0ede2bf3d6bfd32c8975ac3769130e0e64d6fee03f9962c9a00d0674b0d57e0a1aa711e3a49a82afa44132e118ae0057aa0a2c1071ca8ad

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

    MD5

    7fe92b75f314f358909bbd43fa2a8eb9

    SHA1

    26200e1aa1ceb63f9dc29f05cfbe21c89f881957

    SHA256

    5b0007ae7316e60bf85127d4415e2d70727704e57b1d34c7bd9869cc00d01124

    SHA512

    1f6c21f829668e23d0ede2bf3d6bfd32c8975ac3769130e0e64d6fee03f9962c9a00d0674b0d57e0a1aa711e3a49a82afa44132e118ae0057aa0a2c1071ca8ad