General

  • Target

    client.exe.zip

  • Size

    9KB

  • Sample

    241215-t4g2rszlft

  • MD5

    781d60871b7567e08fdf43533408e09f

  • SHA1

    ef0476c57634c04f02da0f4d762fc6f0c219119f

  • SHA256

    a3c37478d879d20b7d6c392c70c0acdf0ed7ef4fba94578d9a5a9131b873831b

  • SHA512

    38c640d4f9d3e64e3b088ae12bd7c75e43aaeb4448fbceec5e3d54d082254124519765f2ebf083534255f49cc0d8ce1116f509d616b114dd216de6cded977efd

  • SSDEEP

    192:aUr8d+BYXkYvHF2UAmblJ5TcyN58iy1xknBpWQ+:aUgd8YUShAobTc+8NQp+

Malware Config

Extracted

Family

meduza

C2

193.3.19.151

Attributes
  • anti_dbg

    true

  • anti_vm

    true

  • build_name

    hellres

  • extensions

    .txt; .doc; .xlsx

  • grabber_max_size

    4.194304e+06

  • port

    15666

  • self_destruct

    false

Extracted

Family

xworm

Version

5.0

C2

45.141.26.234:7000

Mutex

2XLzSYLZvUJjDK3V

Attributes
  • Install_directory

    %ProgramData%

  • install_file

    Java Update (32bit).exe

aes.plain

Targets

    • Target

      client.exe.zip

    • Size

      9KB

    • MD5

      781d60871b7567e08fdf43533408e09f

    • SHA1

      ef0476c57634c04f02da0f4d762fc6f0c219119f

    • SHA256

      a3c37478d879d20b7d6c392c70c0acdf0ed7ef4fba94578d9a5a9131b873831b

    • SHA512

      38c640d4f9d3e64e3b088ae12bd7c75e43aaeb4448fbceec5e3d54d082254124519765f2ebf083534255f49cc0d8ce1116f509d616b114dd216de6cded977efd

    • SSDEEP

      192:aUr8d+BYXkYvHF2UAmblJ5TcyN58iy1xknBpWQ+:aUgd8YUShAobTc+8NQp+

    • Detect Xworm Payload

    • Meduza

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

    • Meduza Stealer payload

    • Meduza family

    • Xworm

      Xworm is a remote access trojan written in C#.

    • Xworm family

    • Command and Scripting Interpreter: PowerShell

      Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

    • Downloads MZ/PE file

    • Drops startup file

    • Executes dropped EXE

    • Loads dropped DLL

    • Reads data files stored by FTP clients

      Tries to access configuration files associated with programs like FileZilla.

    • Reads user/profile data of web browsers

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

    • Unsecured Credentials: Credentials In Files

      Steal credentials from unsecured files.

    • Accesses Microsoft Outlook profiles

    • Checks installed software on the system

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

    • Legitimate hosting services abused for malware hosting/C2

    • Looks up external IP address via web service

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

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks