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Resubmissions

02/08/2024, 20:51

240802-zm6lpazckr 9

02/08/2024, 20:48

240802-zlhs8svbpb 9

02/08/2024, 20:47

240802-zla4dsvbmh 8

02/08/2024, 20:44

240802-zjfwvsvara 8

02/08/2024, 20:44

240802-zh8kgszamp 8

02/08/2024, 20:38

240802-zezheathne 8

General

  • Target

    https://cdn.discordapp.com/attachments/1266555940493332512/1268016318926295110/Bootstrapper.exe?ex=66ae2f79&is=66acddf9&hm=37c91d30dbc630d89da963cdb91c3348420b1eec132cd2da4405c224aa2d45eb&

  • Sample

    240802-zm6lpazckr

Malware Config

Targets

    • Target

      https://cdn.discordapp.com/attachments/1266555940493332512/1268016318926295110/Bootstrapper.exe?ex=66ae2f79&is=66acddf9&hm=37c91d30dbc630d89da963cdb91c3348420b1eec132cd2da4405c224aa2d45eb&

    • Identifies VirtualBox via ACPI registry values (likely anti-VM)

    • 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.

    • Executes dropped EXE

    • Loads dropped DLL

    • Themida packer

      Detects Themida, an advanced Windows software protection system.

    • Blocklisted process makes network request

    • Checks whether UAC is enabled

    • 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

    • Suspicious use of NtSetInformationThreadHideFromDebugger

MITRE ATT&CK Enterprise v15

Tasks