General

  • Target

    59888420dd0bcee1ad8ad4c4947c5da32b2e43d32aaa7c64f781fd276aa59141

  • Size

    70.1MB

  • Sample

    240821-rq95aawhjn

  • MD5

    32cf2e67b683f71459218a15ca946933

  • SHA1

    df4b2652ca577ea60c0d7ac8dcfb02c9f0dc1beb

  • SHA256

    59888420dd0bcee1ad8ad4c4947c5da32b2e43d32aaa7c64f781fd276aa59141

  • SHA512

    5cf9e94939a83fe15bb95d8b8f05f42282c36c9f6df851831d50f0e7764fef094cf43455532e16f618472fae2c5817dbf71ea55f48e0ee80b476ded411205eb4

  • SSDEEP

    393216:lWxQN89qQk4adiJCuE2fUCdod+OvqKkZHzXhJ/KTe8uiBUtkc0k3qRsGg4GUo3NU:lWoI7zGP5ahWc3Imq

Malware Config

Extracted

Family

xworm

C2

88.0.183.177:1603

88.0.172.65:1603

83.36.190.196:1603

83.38.30.219:1603

Attributes
  • Install_directory

    %Temp%

  • install_file

    SecurityHealthSystray.exe

Extracted

Family

xworm

Version

5.0

C2

88.0.183.177:1603

88.0.172.65:1603

83.36.190.196:1603

83.38.30.219:1603

Mutex

XpRJMNcN9dWrZEo0

Attributes
  • Install_directory

    %ProgramData%

  • install_file

    RuntimeBroker.exe

aes.plain

Targets

    • Target

      59888420dd0bcee1ad8ad4c4947c5da32b2e43d32aaa7c64f781fd276aa59141

    • Size

      70.1MB

    • MD5

      32cf2e67b683f71459218a15ca946933

    • SHA1

      df4b2652ca577ea60c0d7ac8dcfb02c9f0dc1beb

    • SHA256

      59888420dd0bcee1ad8ad4c4947c5da32b2e43d32aaa7c64f781fd276aa59141

    • SHA512

      5cf9e94939a83fe15bb95d8b8f05f42282c36c9f6df851831d50f0e7764fef094cf43455532e16f618472fae2c5817dbf71ea55f48e0ee80b476ded411205eb4

    • SSDEEP

      393216:lWxQN89qQk4adiJCuE2fUCdod+OvqKkZHzXhJ/KTe8uiBUtkc0k3qRsGg4GUo3NU:lWoI7zGP5ahWc3Imq

    • Detect Xworm Payload

    • Xworm

      Xworm is a remote access trojan written in C#.

    • 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.

    • 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

    • Loads dropped DLL

    • Obfuscated with Agile.Net obfuscator

      Detects use of the Agile.Net commercial obfuscator, which is capable of entity renaming and control flow obfuscation.

    • Themida packer

      Detects Themida, an advanced Windows software protection system.

    • Adds Run key to start application

    • Checks whether UAC is enabled

    • Suspicious use of NtSetInformationThreadHideFromDebugger

MITRE ATT&CK Enterprise v15

Tasks