General

  • Target
    8def226d755c749a9f6f8c8cbf50f7b4655e66848ee75f000ce9e47492f4d4f1.bin
  • Size 6.0MB
  • Sample260808-3ab34aen3v
  • SHA256 8def226d755c749a9f6f8c8cbf50f7b4655e66848ee75f000ce9e47492f4d4f1
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Extracted

Family
  • xworm

Version
  • 5.0

C2
  • hxtes3a-40114.portmap.host:40114

Mutex
  • CrirQpGRl8Am1h1Z

Attributes
  • Install_directory

    %Userprofile%

  • install_file

    Realtek HD Audio Universal Service.exe

aes.plain

Targets

    • Target
      8def226d755c749a9f6f8c8cbf50f7b4655e66848ee75f000ce9e47492f4d4f1.bin
    • Size 6.0MB
    • SHA256 8def226d755c749a9f6f8c8cbf50f7b4655e66848ee75f000ce9e47492f4d4f1
    • MD5 SHA1 SHA512 SSDEEP TLSH
    • Detect Xworm Payload

    • Family: Xworm

      Xworm is a remote access trojan written in C#.

    • Family: xmrig

      XMRig is a high performance, open source, cross platform CPU/GPU miner.

    • XMRig Miner payload

    • 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.

    • Creates new service(s)

    • Executes dropped EXE

    • Loads dropped DLL

    • Stops running service(s)

    • Adds Run key to start application

    • Contacts third-party web service commonly abused for C2

      Legitimate web (hosting) services can be abused by malware authors to host malware or C2s.

    • 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 SetThreadContext

    • UPX packed file

      Detects executables packed with UPX/modified UPX open source packer.

MITRE ATT&CK Enterprise v16

Tasks