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Resubmissions

13/03/2023, 08:30

230313-kegj9shd85 3

19/12/2022, 17:13

221219-vrrk4saf3s 10

General

  • Target

    https://cdn.discordapp.com/attachments/1045003118900940843/1054445358895353876/Krnl.zip

  • Sample

    221219-vrrk4saf3s

Malware Config

Targets

    • Target

      https://cdn.discordapp.com/attachments/1045003118900940843/1054445358895353876/Krnl.zip

    • Suspicious use of NtCreateUserProcessOtherParentProcess

    • UAC bypass

    • Downloads MZ/PE file

    • Drops file in Drivers directory

    • Executes dropped EXE

    • Registers COM server for autorun

    • Sets service image path in registry

    • 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

    • Loads dropped DLL

    • Reads local data of messenger clients

      Infostealers often target stored data of messaging applications, which can include saved credentials and account information.

    • Reads user/profile data of web browsers

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

    • Adds Run key to start application

    • Checks installed software on the system

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

    • Enumerates connected drives

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

    • 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.

    • Drops file in System32 directory

MITRE ATT&CK Enterprise v6

Tasks