General

  • Target

    Client_protected.exe

  • Size

    2.9MB

  • Sample

    241116-ynsksasjcx

  • MD5

    29e814ca993bb291e2965e965efea4e7

  • SHA1

    04e4771d22bcc4fcfaeecec4e45177e4f16752e7

  • SHA256

    24e4267cb003cbeb5bdaffbf4089bff010cad46033172894165e765adb55f308

  • SHA512

    340cb2d1381175bf0c6d33901b3bfd6b5ef13affb236901922f942f0b085e99b3bdce358a2066cdf636af2634858a18a3cc0c25862a6258f3c695668524bcc68

  • SSDEEP

    49152:DWcmOyXHtKsdNH4R8Qips6kIbBAQMaNJObmgd3nQCxdfNd26k:DeRos94tipTOQJObm63bdT

Malware Config

Extracted

Family

xworm

C2

127.0.0.1:7666

192.168.1.46:7666

Attributes
  • Install_directory

    %Userprofile%

  • install_file

    USB.exe

Targets

    • Target

      Client_protected.exe

    • Size

      2.9MB

    • MD5

      29e814ca993bb291e2965e965efea4e7

    • SHA1

      04e4771d22bcc4fcfaeecec4e45177e4f16752e7

    • SHA256

      24e4267cb003cbeb5bdaffbf4089bff010cad46033172894165e765adb55f308

    • SHA512

      340cb2d1381175bf0c6d33901b3bfd6b5ef13affb236901922f942f0b085e99b3bdce358a2066cdf636af2634858a18a3cc0c25862a6258f3c695668524bcc68

    • SSDEEP

      49152:DWcmOyXHtKsdNH4R8Qips6kIbBAQMaNJObmgd3nQCxdfNd26k:DeRos94tipTOQJObm63bdT

    • Detect Xworm Payload

    • Xworm

      Xworm is a remote access trojan written in C#.

    • Xworm family

    • Identifies VirtualBox via ACPI registry values (likely anti-VM)

    • 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

    • Checks BIOS information in registry

      BIOS information is often read in order to detect sandboxing environments.

    • Checks computer location settings

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

    • Executes dropped EXE

    • Themida packer

      Detects Themida, an advanced Windows software protection system.

    • Checks whether UAC is enabled

    • 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 NtSetInformationThreadHideFromDebugger

MITRE ATT&CK Enterprise v15

Tasks