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General

  • Target

    file.exe

  • Size

    327KB

  • Sample

    230110-fj5ensgd7v

  • MD5

    c9483aa293f692b9f6d8ba2967fd1c99

  • SHA1

    7100757b4e9d76237ecf7a570bb290232537816f

  • SHA256

    7130e94bd50596e8df99ee446b7629fb391e445f4ce5110522f8df810bad1595

  • SHA512

    bb55946c0cfb917e9bcd59717d003e5718bee0ace66d38191b9d9fde97cb181ff8ce139b2711dc8844b4e45883ebf578f7ec8ecdc359b84f90d676075bb5eac5

  • SSDEEP

    6144:vK07OTzkrbzCEBehsyuQs7dBA0XFsvOZJY:v9qabWhFuQqKmZ

Malware Config

Extracted

Family

tofsee

C2

svartalfheim.top

jotunheim.name

Targets

    • Target

      file.exe

    • Size

      327KB

    • MD5

      c9483aa293f692b9f6d8ba2967fd1c99

    • SHA1

      7100757b4e9d76237ecf7a570bb290232537816f

    • SHA256

      7130e94bd50596e8df99ee446b7629fb391e445f4ce5110522f8df810bad1595

    • SHA512

      bb55946c0cfb917e9bcd59717d003e5718bee0ace66d38191b9d9fde97cb181ff8ce139b2711dc8844b4e45883ebf578f7ec8ecdc359b84f90d676075bb5eac5

    • SSDEEP

      6144:vK07OTzkrbzCEBehsyuQs7dBA0XFsvOZJY:v9qabWhFuQqKmZ

    • Tofsee

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

    • Windows security bypass

    • xmrig

      XMRig is a high performance, open source, cross platform CPU/GPU miner.

    • XMRig Miner payload

    • 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.

    • Deletes itself

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v6

Tasks