General

  • Target

    Files To Use.exe

  • Size

    493KB

  • Sample

    240208-bkkpfacbb2

  • MD5

    d110ec96448664160f10da4abd78152f

  • SHA1

    128cdfec7390922d3c643717149f81f4af277cd1

  • SHA256

    2fad8bf4e40ac2f1b7da870bb8e4c228bec5c52a875aadf347e71a9cba30d6bc

  • SHA512

    e99ca079cb44b89e331693c975438f88efda629d7fd898535c511078ca82e07be3faa71bcf31e0657f428556990860f0879d76e23c89f4d9be91f8655cb0734f

  • SSDEEP

    12288:PBdlwHRn+WlYV+9VeD09yIzj8ftZJIF+dHO:PBkVdlYATeDOyuj8VwFUHO

Malware Config

Extracted

Family

xworm

Version

3.1

C2

fhfgthfghfg-34660.portmap.host:34660

Attributes
  • Install_directory

    %Userprofile%

  • install_file

    Runtime Broker.exe

Extracted

Family

umbral

C2

https://discord.com/api/webhooks/1204944287041847307/aoa_S28cr8V4g11xswAZC9SdvRJS8ygczDK-GfItmMFXCcL2edroJI5lraSE-OISlf6d

Targets

    • Target

      Files To Use.exe

    • Size

      493KB

    • MD5

      d110ec96448664160f10da4abd78152f

    • SHA1

      128cdfec7390922d3c643717149f81f4af277cd1

    • SHA256

      2fad8bf4e40ac2f1b7da870bb8e4c228bec5c52a875aadf347e71a9cba30d6bc

    • SHA512

      e99ca079cb44b89e331693c975438f88efda629d7fd898535c511078ca82e07be3faa71bcf31e0657f428556990860f0879d76e23c89f4d9be91f8655cb0734f

    • SSDEEP

      12288:PBdlwHRn+WlYV+9VeD09yIzj8ftZJIF+dHO:PBkVdlYATeDOyuj8VwFUHO

    • Detect Umbral payload

    • Detect Xworm Payload

    • Umbral

      Umbral stealer is an opensource moduler stealer written in C#.

    • Xworm

      Xworm is a remote access trojan written in C#.

    • Checks computer location settings

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

    • Drops startup file

    • Executes dropped EXE

    • Loads dropped DLL

    • Adds Run key to start application

    • Looks up external IP address via web service

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

MITRE ATT&CK Enterprise v15

Tasks