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Analysis

  • max time kernel
    94s
  • max time network
    139s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    07/11/2024, 01:51

General

  • Target

    2024-11-07_2948ce175adf6a2bfc11b98d54ceaa2a_ryuk.exe

  • Size

    3.6MB

  • MD5

    2948ce175adf6a2bfc11b98d54ceaa2a

  • SHA1

    654d876833b26f9b6c1751b6a500e96a03249fff

  • SHA256

    418aee32d686faac6b2281bc194399bea71da7857d2bb8bdc8526a88ce566762

  • SHA512

    11b43cc0e4bb12d7592ec3f8e18e1caf7ccee44dabb7ca510eca22534a5e9d3f19aa5b5c983648fa521de706b895f20f84394a5de142da097084ad83c82e4082

  • SSDEEP

    24576:bw317sPycp8nCB3CJdNCL1DqA1bgNSq+16uTwZWQoN1k8cVFo4R3pXOx65IYG5jh:bByPnIz4P/w17T43B+V

Malware Config

Extracted

Family

meduza

C2

109.107.181.162

Attributes
  • anti_dbg

    true

  • anti_vm

    true

  • build_name

    665

  • extensions

    none

  • grabber_max_size

    1.048576e+06

  • links

    none

  • port

    15666

  • self_destruct

    true

Signatures

  • Meduza

    Meduza is a crypto wallet and info stealer written in C++.

  • Meduza Stealer payload 5 IoCs
  • Meduza family
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Reads user/profile data of web browsers 3 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Accesses Microsoft Outlook profiles 1 TTPs 5 IoCs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Looks up external IP address via web service 2 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Suspicious use of SetThreadContext 1 IoCs
  • Browser Information Discovery 1 TTPs

    Enumerate browser information.

  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 2 IoCs

    Adversaries may check for Internet connectivity on compromised systems.

  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-11-07_2948ce175adf6a2bfc11b98d54ceaa2a_ryuk.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-11-07_2948ce175adf6a2bfc11b98d54ceaa2a_ryuk.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:4752
    • C:\Users\Admin\AppData\Local\Temp\2024-11-07_2948ce175adf6a2bfc11b98d54ceaa2a_ryuk.exe
      C:\Users\Admin\AppData\Local\Temp\2024-11-07_2948ce175adf6a2bfc11b98d54ceaa2a_ryuk.exe
      2⤵
      • Checks computer location settings
      • Accesses Microsoft Outlook profiles
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      • outlook_office_path
      • outlook_win_path
      PID:452
      • C:\Windows\System32\cmd.exe
        "C:\Windows\System32\cmd.exe" /C ping 1.1.1.1 -n 1 -w 3000 > Nul & Del /f /q "C:\Users\Admin\AppData\Local\Temp\2024-11-07_2948ce175adf6a2bfc11b98d54ceaa2a_ryuk.exe"
        3⤵
        • System Network Configuration Discovery: Internet Connection Discovery
        • Suspicious use of WriteProcessMemory
        PID:3928
        • C:\Windows\system32\PING.EXE
          ping 1.1.1.1 -n 1 -w 3000
          4⤵
          • System Network Configuration Discovery: Internet Connection Discovery
          • Runs ping.exe
          PID:4040

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/452-0-0x0000000140000000-0x000000014013E000-memory.dmp

    Filesize

    1.2MB

  • memory/452-1-0x0000000140000000-0x000000014013E000-memory.dmp

    Filesize

    1.2MB

  • memory/452-3-0x0000000140000000-0x000000014013E000-memory.dmp

    Filesize

    1.2MB

  • memory/452-2-0x0000000140000000-0x000000014013E000-memory.dmp

    Filesize

    1.2MB

  • memory/452-12-0x0000000140000000-0x000000014013E000-memory.dmp

    Filesize

    1.2MB