General

  • Target

    b2de784471ee083a4a7e2d6f3057e00c.bin

  • Size

    174KB

  • Sample

    240616-cqyzpavhnc

  • MD5

    25e1b2f4d798f48f8a5539dc73197b08

  • SHA1

    71b40831e46efb9280ad982ef57cc9d98a71a32f

  • SHA256

    87dc31de037643474b884632f70af235d33d4f74130ab52e9e5f0ee90a14f6c7

  • SHA512

    a7ce27a6b33c26bb2ab6161cffef4a8c916a9863a92eb693fded83f5e365ac44f8d4bac34bc0d494df16b4c78808fd2a169dc465c8c1fdfdedce3098157d76c0

  • SSDEEP

    3072:7SpWDMPDvMV/WDS4QydI4L6tgwLUBI8NVacppLhvzBvjRbgBeiXxVDN6q+A0wPv:7L2D0M+4QyVIgYsImVac9vX83xGA3

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      a58c26dd8d015d4e3b081b09c3b21f1cff71e42abe545d90872c2eef003d51c9.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.

    • 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