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General

  • Target

    21a0e859e84fcd7159996c98c8d9450845cf9dd4677edf6280b377e6f2e5ed9b

  • Size

    260KB

  • Sample

    230108-3jzwhsae2y

  • MD5

    e154be10e86c3b4ef92ec179ef7f8fd1

  • SHA1

    2a99469cbf4e7b4e8a9c466756a6ae88eb344967

  • SHA256

    21a0e859e84fcd7159996c98c8d9450845cf9dd4677edf6280b377e6f2e5ed9b

  • SHA512

    1434fcb691f52568f8e8d136cd1d2906c046d4f44be5adae2612e5193c4da1ca45af6226fe41b819710109d4b8bb9dbc45a981f01e64a3911726f7ac2ee2c80a

  • SSDEEP

    3072:PXEvKdWLyRcVeYX1T51b+aDMe3K/TtolpJU5AvXm9hZCRRzMuWZgd3n:/eLFVeYX1iSMU4TilUqXucqgd3

Malware Config

Extracted

Family

tofsee

C2

svartalfheim.top

jotunheim.name

Targets

    • Target

      21a0e859e84fcd7159996c98c8d9450845cf9dd4677edf6280b377e6f2e5ed9b

    • Size

      260KB

    • MD5

      e154be10e86c3b4ef92ec179ef7f8fd1

    • SHA1

      2a99469cbf4e7b4e8a9c466756a6ae88eb344967

    • SHA256

      21a0e859e84fcd7159996c98c8d9450845cf9dd4677edf6280b377e6f2e5ed9b

    • SHA512

      1434fcb691f52568f8e8d136cd1d2906c046d4f44be5adae2612e5193c4da1ca45af6226fe41b819710109d4b8bb9dbc45a981f01e64a3911726f7ac2ee2c80a

    • SSDEEP

      3072:PXEvKdWLyRcVeYX1T51b+aDMe3K/TtolpJU5AvXm9hZCRRzMuWZgd3n:/eLFVeYX1iSMU4TilUqXucqgd3

    • Tofsee

      Backdoor/botnet which carries out malicious activities based on commands from a C2 server.

    • Creates new service(s)

    • Executes dropped EXE

    • Modifies Windows Firewall

    • Sets service image path in registry

    • Checks computer location settings

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

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v6

Tasks