General

  • Target
    b9fb571d043f535b6685675f65a157ee39d55a6111ec51ca404d54d5e4822cec.dll
  • Size 417KB
  • Sample260528-g5ea2sav3s
  • SHA256 b9fb571d043f535b6685675f65a157ee39d55a6111ec51ca404d54d5e4822cec
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Extracted

Language
  • ps1

Deobfuscated
Source
URLs
  • exe.dropper

    https://usc1.contabostorage.com/d46add0df8a847a68cd47cd65042a6bf:apps/ScreenConnect.msi

Extracted

Family
  • xworm

Version
  • 5.0

C2
  • aiBot.casacam.net:8090

Mutex
  • c5iFzH2kbVQHgQJn

Attributes
  • install_file

    USB.exe

aes.plain

Targets

    • Target
      b9fb571d043f535b6685675f65a157ee39d55a6111ec51ca404d54d5e4822cec.dll
    • Size 417KB
    • SHA256 b9fb571d043f535b6685675f65a157ee39d55a6111ec51ca404d54d5e4822cec
    • MD5 SHA1 SHA512 SSDEEP TLSH
    • Detect Xworm Payload

    • Family: Xworm

      Xworm is a remote access trojan written in C#.

    • Badlisted process makes network request

      Network request originating from process or tool commonly abused by malware.

    • Command and Scripting Interpreter: PowerShell

      Run Powershell and hide display window.

    • Sets service image path in registry

      This determines the executable launched when a service starts. It can be used to establish persistence.

    • Signed with revoked ConnectWise certificate

      Binary is signed using a ConnectWise certificate revoked for key compromise.

    • Checks computer location settings

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

    • Event Triggered Execution: Component Object Model Hijacking

      Adversaries may establish persistence by executing malicious content triggered by hijacked references to Component Object Model (COM) objects.

    • Executes dropped EXE

    • Loads dropped DLL

    • Enumerates connected drives

      Attempts to read the root path of hard drives other than the default C: drive.

    • Boot or Logon Autostart Execution: Authentication Package

      Suspicious Windows Authentication Registry Modification.

    • Drops file in System32 directory

MITRE ATT&CK Enterprise v16

Tasks