General

  • Target

    Output.exe

  • Size

    3.3MB

  • Sample

    241113-ysp1fsxpfv

  • MD5

    631c497597c5c12304d528b24ccc31df

  • SHA1

    9da881cd6797e4e8646de4df60eea73ae45c3133

  • SHA256

    239584ed2b45abd89565c75968a8ca7d0624b2df851463f80a485e1efc04d9e4

  • SHA512

    35a6bb13ff373aebb2a6fc080ea0f69e968fbef3441ce7f69604e5f97645ae9e6feb95bad1058fa58f8e652dcc2befd6464d9f62d707d8115c743c57a912957e

  • SSDEEP

    98304:gm7q1K/hJp6SjJjtPzGhHzKIfx+ceJpTYZ:x7q1Irp9jltPahVfx+ceJtYZ

Malware Config

Extracted

Family

xworm

Version

5.0

C2

testarosa.duckdns.org:7119

Mutex

Ljk1RFh4f0rbZvhE

Attributes
  • Install_directory

    %Temp%

  • install_file

    Realtec.exe

aes.plain

Extracted

Family

xworm

C2

147.185.221.23:25808

Attributes
  • Install_directory

    %LocalAppData%

  • install_file

    Realtek HD Audio Universal Service.exe

Targets

    • Target

      Output.exe

    • Size

      3.3MB

    • MD5

      631c497597c5c12304d528b24ccc31df

    • SHA1

      9da881cd6797e4e8646de4df60eea73ae45c3133

    • SHA256

      239584ed2b45abd89565c75968a8ca7d0624b2df851463f80a485e1efc04d9e4

    • SHA512

      35a6bb13ff373aebb2a6fc080ea0f69e968fbef3441ce7f69604e5f97645ae9e6feb95bad1058fa58f8e652dcc2befd6464d9f62d707d8115c743c57a912957e

    • SSDEEP

      98304:gm7q1K/hJp6SjJjtPzGhHzKIfx+ceJpTYZ:x7q1Irp9jltPahVfx+ceJtYZ

    • Detect Xworm Payload

    • 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.

    • Checks computer location settings

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

    • Drops startup file

    • Executes dropped EXE

    • Loads dropped DLL

    • Adds Run key to start application

    • Looks up external IP address via web service

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

MITRE ATT&CK Enterprise v15

Tasks