General

  • Target

    DealarOrDeadCode.exe

  • Size

    500KB

  • Sample

    240919-g7eplavfrm

  • MD5

    e1c82191b678cea8f3c996887ddc1232

  • SHA1

    7946006ca278892817b7a778eea1e04f5b2f948c

  • SHA256

    bd00a7577088b67b52699f956275a3f563d623ca907feeeaee8d2f821d35de40

  • SHA512

    cb1499db7c1a7b3c4436d02a1218a055f9c04d7b4ae2ca01fd179a6bdb74c30c8cda1ffda8b61dcc3397b97351b77d683295cb46701a614cf7341906bd807804

  • SSDEEP

    12288:kU43i+9MrOq5q7pN37VvbvH3pJJtlueGAmp8R6LqSY4JiFZlmM5Ki634:V4JZDhAWS2ZN

Malware Config

Extracted

Family

xworm

Version

5.0

C2

subscribe-bond.gl.at.ply.gg:28600

Mutex

tnsxJywWJMkQgZ7E

Attributes
  • Install_directory

    %Public%

  • install_file

    Deadsvchost.exe

aes.plain

Extracted

Family

xworm

Version

3.0

C2

updates-full.gl.at.ply.gg:60075

Mutex

pPl3jDvgHvU1lllp

Attributes
  • Install_directory

    %LocalAppData%

  • install_file

    USB.exe

aes.plain

Targets

    • Target

      DealarOrDeadCode.exe

    • Size

      500KB

    • MD5

      e1c82191b678cea8f3c996887ddc1232

    • SHA1

      7946006ca278892817b7a778eea1e04f5b2f948c

    • SHA256

      bd00a7577088b67b52699f956275a3f563d623ca907feeeaee8d2f821d35de40

    • SHA512

      cb1499db7c1a7b3c4436d02a1218a055f9c04d7b4ae2ca01fd179a6bdb74c30c8cda1ffda8b61dcc3397b97351b77d683295cb46701a614cf7341906bd807804

    • SSDEEP

      12288:kU43i+9MrOq5q7pN37VvbvH3pJJtlueGAmp8R6LqSY4JiFZlmM5Ki634:V4JZDhAWS2ZN

    • Detect Xworm Payload

    • Modifies security service

    • Suspicious use of NtCreateUserProcessOtherParentProcess

    • Xworm

      Xworm is a remote access trojan written in C#.

    • Sets service image path in registry

    • 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.

    • Drops startup file

    • Executes dropped EXE

    • Indicator Removal: Clear Windows Event Logs

      Clear Windows Event Logs to hide the activity of an intrusion.

    • Adds Run key to start application

    • Command and Scripting Interpreter: PowerShell

      Using powershell.exe command.

    • Looks up external IP address via web service

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

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks