General

  • Target

    3ef5ca30ff7d7629fea75ea1f7a27c81c2c2d9b86fd9a26c4f83536586f8a372

  • Size

    182KB

  • Sample

    221104-an6kmsbcan

  • MD5

    cec7e2152d382c1d2f2e3e0698f6af84

  • SHA1

    20e0a98917d0a07657e0727bc4d63c1f49c21ba3

  • SHA256

    3ef5ca30ff7d7629fea75ea1f7a27c81c2c2d9b86fd9a26c4f83536586f8a372

  • SHA512

    9ebc77cbdfc29be5ac0bd800b6f0f9ff6db1da2205e6dd6636101177e557cd888928c680f9ac4876fac7ae37b7915cc2b94bd3ef574c5add5100601fd98ea318

  • SSDEEP

    3072:I1VScfEehjPgLo3Phrfx5D97aW0iXO6EB2/eSJfObFMC3bRLggJ:I1MSfhj4LqPhrP9SiXOXIZfwp3bRL

Malware Config

Extracted

Family

systembc

C2

89.248.165.79:443

Targets

    • Target

      3ef5ca30ff7d7629fea75ea1f7a27c81c2c2d9b86fd9a26c4f83536586f8a372

    • Size

      182KB

    • MD5

      cec7e2152d382c1d2f2e3e0698f6af84

    • SHA1

      20e0a98917d0a07657e0727bc4d63c1f49c21ba3

    • SHA256

      3ef5ca30ff7d7629fea75ea1f7a27c81c2c2d9b86fd9a26c4f83536586f8a372

    • SHA512

      9ebc77cbdfc29be5ac0bd800b6f0f9ff6db1da2205e6dd6636101177e557cd888928c680f9ac4876fac7ae37b7915cc2b94bd3ef574c5add5100601fd98ea318

    • SSDEEP

      3072:I1VScfEehjPgLo3Phrfx5D97aW0iXO6EB2/eSJfObFMC3bRLggJ:I1MSfhj4LqPhrP9SiXOXIZfwp3bRL

    • Detects Smokeloader packer

    • SmokeLoader

      Modular backdoor trojan in use since 2014.

    • SystemBC

      SystemBC is a proxy and remote administration tool first seen in 2019.

    • Downloads MZ/PE file

    • Executes dropped EXE

    • Checks installed software on the system

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

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v6

Tasks