General

  • Target

    Loader.exe

  • Size

    29.3MB

  • Sample

    241119-s56k3sydmj

  • MD5

    54fb546b537e9e4efe685d60565b3008

  • SHA1

    81cb60b39b7a4c6abb5004b90351dbb23f80da58

  • SHA256

    24969dc7438810f78b7c98da7542d9925a7f1e327b54eafb475d20fbf47b8ade

  • SHA512

    4e220910c66b9f131f655884cee2fef239e4872242de09ff5de6bde9a50ccd3b448a6c7578e7c3cbfea851f97f236937f11005a5642bf1222b01fa74699f166a

  • SSDEEP

    786432:RutirSLniIrHESgG8VGC76nNLOnx+F5GjMgbeoOmW0uEpT:Rut2SuWHHgGCQN6nxOsjMvhmW0uEpT

Malware Config

Extracted

Family

xworm

C2

45.141.27.248:7777

Attributes
  • Install_directory

    %AppData%

  • install_file

    svchost.exe

Targets

    • Target

      Loader.exe

    • Size

      29.3MB

    • MD5

      54fb546b537e9e4efe685d60565b3008

    • SHA1

      81cb60b39b7a4c6abb5004b90351dbb23f80da58

    • SHA256

      24969dc7438810f78b7c98da7542d9925a7f1e327b54eafb475d20fbf47b8ade

    • SHA512

      4e220910c66b9f131f655884cee2fef239e4872242de09ff5de6bde9a50ccd3b448a6c7578e7c3cbfea851f97f236937f11005a5642bf1222b01fa74699f166a

    • SSDEEP

      786432:RutirSLniIrHESgG8VGC76nNLOnx+F5GjMgbeoOmW0uEpT:Rut2SuWHHgGCQN6nxOsjMvhmW0uEpT

    • 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.

    • Suspicious use of NtSetInformationThreadHideFromDebugger

MITRE ATT&CK Enterprise v15

Tasks