General

  • Target

    96878fda61a76395aafa16a6150b0fe1_JaffaCakes118

  • Size

    709KB

  • Sample

    240604-2x7ylsec9z

  • MD5

    96878fda61a76395aafa16a6150b0fe1

  • SHA1

    3509a916a873351ab23bc671cce5ca9aa3299e62

  • SHA256

    94ba896b284005a58298806bba47f725cdcaa1816b3c79226639cb145bf16886

  • SHA512

    4e98e7b32441d270496b35c13e16ca0fedfca10e8baf8cb92a0a54fc803fb2bbfbc3417fe22467c195655821167d068a0ccde3310b45c75cada677ccea638234

  • SSDEEP

    12288:skkB0IBUT4cicLtJAXqL2+uiN9mTqFcsTmjuHQdCgfRm:hkB0IB64cicLtJAXqL6qFrooQ+

Malware Config

Extracted

Family

buer

C2

https://165.22.76.41/

Targets

    • Target

      96878fda61a76395aafa16a6150b0fe1_JaffaCakes118

    • Size

      709KB

    • MD5

      96878fda61a76395aafa16a6150b0fe1

    • SHA1

      3509a916a873351ab23bc671cce5ca9aa3299e62

    • SHA256

      94ba896b284005a58298806bba47f725cdcaa1816b3c79226639cb145bf16886

    • SHA512

      4e98e7b32441d270496b35c13e16ca0fedfca10e8baf8cb92a0a54fc803fb2bbfbc3417fe22467c195655821167d068a0ccde3310b45c75cada677ccea638234

    • SSDEEP

      12288:skkB0IBUT4cicLtJAXqL2+uiN9mTqFcsTmjuHQdCgfRm:hkB0IB64cicLtJAXqL6qFrooQ+

    • Buer

      Buer is a new modular loader first seen in August 2019.

    • Modifies WinLogon for persistence

    • Buer Loader

      Detects Buer loader in memory or disk.

    • Command and Scripting Interpreter: PowerShell

      Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

    • Deletes itself

    • Executes dropped EXE

    • Loads dropped DLL

    • Enumerates connected drives

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

MITRE ATT&CK Enterprise v15

Tasks