General

  • Target

    https://cdn.discordapp.com/attachments/1221624037218979871/1233171393697419264/XSpammer_Setup.rar?ex=662c1fdb&is=662ace5b&hm=3c540bfb55da626be833e4e95546e3f675c5c7f630c08bb04c5cfffa0db0c08b&

  • Sample

    240425-1twwhaff79

Malware Config

Targets

    • Target

      https://cdn.discordapp.com/attachments/1221624037218979871/1233171393697419264/XSpammer_Setup.rar?ex=662c1fdb&is=662ace5b&hm=3c540bfb55da626be833e4e95546e3f675c5c7f630c08bb04c5cfffa0db0c08b&

    • Detect Umbral payload

    • Umbral

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

    • Drops file in Drivers directory

    • Checks computer location settings

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

    • Executes dropped EXE

    • Loads dropped DLL

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

    • Checks installed software on the system

      Looks up Uninstall key entries in the registry to enumerate software on the system.

    • Legitimate hosting services abused for malware hosting/C2

    • 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