General

  • Target

    file

  • Size

    167KB

  • Sample

    221125-3geskahf3y

  • MD5

    db37e2dceca24b2a30667e7a26816e5a

  • SHA1

    a52d6f9718d4cb71f623f463cd590f76ad04878c

  • SHA256

    997f091cec1b6b0ca4c760582289f88fc845072e15d22fb9ebbc70d8a411eb34

  • SHA512

    b1f0795046296ce3ded9b195d40308999d3800f6886abff6730df2a047f30d3188828b48bd697069f51f038d8ff876d69e07563ef242070b30e219dce04b948c

  • SSDEEP

    3072:MVtkj/2yjSgA2EVu5W+L/l5JYmsd//FuJpXxS5osnN:MnK+gA2EIL/lYZFupXI/

Malware Config

Extracted

Family

tofsee

C2

svartalfheim.top

jotunheim.name

Targets

    • Target

      file

    • Size

      167KB

    • MD5

      db37e2dceca24b2a30667e7a26816e5a

    • SHA1

      a52d6f9718d4cb71f623f463cd590f76ad04878c

    • SHA256

      997f091cec1b6b0ca4c760582289f88fc845072e15d22fb9ebbc70d8a411eb34

    • SHA512

      b1f0795046296ce3ded9b195d40308999d3800f6886abff6730df2a047f30d3188828b48bd697069f51f038d8ff876d69e07563ef242070b30e219dce04b948c

    • SSDEEP

      3072:MVtkj/2yjSgA2EVu5W+L/l5JYmsd//FuJpXxS5osnN:MnK+gA2EIL/lYZFupXI/

    • Tofsee

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

    • Windows security bypass

    • 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

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v6

Tasks