Analysis

  • max time kernel
    169s
  • max time network
    176s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220112
  • submitted
    12-02-2022 04:05

General

  • Target

    16141cd93e91c9af06e72451bb376d3ae5fb63c0639bbc9fcbdbed930a6837e7.exe

  • Size

    176KB

  • MD5

    be847c4f0e08bc0234d811067d9b4acf

  • SHA1

    9cee84ae3e961dd7e7b8fe0b2a02d0154b447b77

  • SHA256

    16141cd93e91c9af06e72451bb376d3ae5fb63c0639bbc9fcbdbed930a6837e7

  • SHA512

    782c653b15cbfa665fc684493acb8b30fbcb0a254acc415d7e3b5a7d628b04c52d392617ddfda82ff435373e5c6ad973b200af7d61b567dcfbfa736c2b0acfa3

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 49 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\16141cd93e91c9af06e72451bb376d3ae5fb63c0639bbc9fcbdbed930a6837e7.exe
    "C:\Users\Admin\AppData\Local\Temp\16141cd93e91c9af06e72451bb376d3ae5fb63c0639bbc9fcbdbed930a6837e7.exe"
    1⤵
    • Checks computer location settings
    • Adds Run key to start application
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3264
    • C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe
      C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe
      2⤵
      • Executes dropped EXE
      PID:2436
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c ping 127.0.0.1 & del /q "C:\Users\Admin\AppData\Local\Temp\16141cd93e91c9af06e72451bb376d3ae5fb63c0639bbc9fcbdbed930a6837e7.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2188
      • C:\Windows\SysWOW64\PING.EXE
        ping 127.0.0.1
        3⤵
        • Runs ping.exe
        PID:1832
  • C:\Windows\system32\MusNotifyIcon.exe
    %systemroot%\system32\MusNotifyIcon.exe NotifyTrayIcon 13
    1⤵
    • Checks processor information in registry
    PID:3408
  • 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:3512
  • 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:2304

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

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

    MD5

    c4ad15192c2fa93e60e55afb70047c86

    SHA1

    5a80f7b97ef1e72763b9d0311e60a9cb07836333

    SHA256

    525f076545df084c7564621aa1759a541b9da08d9ac895f833bdea12f926d474

    SHA512

    1ed0b3b6863334e22b97c36c1cd9a4640b05813575614497d326a2ab390183561db2ad41567b13023cf96fc238ec4358fd6096e21f2bfe60318d8c9e3d762d64

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

    MD5

    c4ad15192c2fa93e60e55afb70047c86

    SHA1

    5a80f7b97ef1e72763b9d0311e60a9cb07836333

    SHA256

    525f076545df084c7564621aa1759a541b9da08d9ac895f833bdea12f926d474

    SHA512

    1ed0b3b6863334e22b97c36c1cd9a4640b05813575614497d326a2ab390183561db2ad41567b13023cf96fc238ec4358fd6096e21f2bfe60318d8c9e3d762d64

  • memory/2436-133-0x0000000000400000-0x0000000000420000-memory.dmp

    Filesize

    128KB

  • memory/3264-132-0x0000000000400000-0x0000000000420000-memory.dmp

    Filesize

    128KB