General

  • Target

    b2de784471ee083a4a7e2d6f3057e00c.exe

  • Size

    310KB

  • Sample

    240614-s9bw9sxbqe

  • MD5

    b2de784471ee083a4a7e2d6f3057e00c

  • SHA1

    03e5e0fd35a1eba05ddb6d0c4f4a9d8c8d4c67a3

  • SHA256

    a58c26dd8d015d4e3b081b09c3b21f1cff71e42abe545d90872c2eef003d51c9

  • SHA512

    5aa37e1305403375b475df3abb5cb60aa6ae4e2f5f07b4d45828c67ef7591e931b7155e135d4898dc982404042dfaa7adb02f9fd12a8336b9cd30955f08125fb

  • SSDEEP

    3072:iPlmU+ROj7FN7oY9hjFJBqqKjOyTpZHNBmN+tTJfNr+1QbSoymwTTuB:iPX+RAxoYzMF5TpZtBmwG0SdTy

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      b2de784471ee083a4a7e2d6f3057e00c.exe

    • Size

      310KB

    • MD5

      b2de784471ee083a4a7e2d6f3057e00c

    • SHA1

      03e5e0fd35a1eba05ddb6d0c4f4a9d8c8d4c67a3

    • SHA256

      a58c26dd8d015d4e3b081b09c3b21f1cff71e42abe545d90872c2eef003d51c9

    • SHA512

      5aa37e1305403375b475df3abb5cb60aa6ae4e2f5f07b4d45828c67ef7591e931b7155e135d4898dc982404042dfaa7adb02f9fd12a8336b9cd30955f08125fb

    • SSDEEP

      3072:iPlmU+ROj7FN7oY9hjFJBqqKjOyTpZHNBmN+tTJfNr+1QbSoymwTTuB:iPX+RAxoYzMF5TpZtBmwG0SdTy

    • Tofsee

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

    • Windows security bypass

    • Creates new service(s)

    • 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

    • Executes dropped EXE

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks