General

  • Target

    file

  • Size

    303KB

  • Sample

    230501-xma4nsee69

  • MD5

    dd18a455e9d700d656ce6965cee1a068

  • SHA1

    bb23d970e98a6a6ec178fc6c9c82689b3e92ee7c

  • SHA256

    18643a9a6e4b61e967e428fadb2d4bb52dfed8a949b4a39cb461c2e3a8e6d207

  • SHA512

    71dc5ce080f2f95f2b68bcd135cfbbb9d020e10f58972b4f90ac98a3794f7791857139d45f417d127182bb26caca996a94c95008f2fc0ccc8a3c1b16dd07b531

  • SSDEEP

    3072:duhpDHOnUv1WfCBuL4IdkVDJNhA+GHRIBiSp5z5DT4zknffhd+OH:shpDH9vEfQQrdkB7Fi05ykn3v+y

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      file

    • Size

      303KB

    • MD5

      dd18a455e9d700d656ce6965cee1a068

    • SHA1

      bb23d970e98a6a6ec178fc6c9c82689b3e92ee7c

    • SHA256

      18643a9a6e4b61e967e428fadb2d4bb52dfed8a949b4a39cb461c2e3a8e6d207

    • SHA512

      71dc5ce080f2f95f2b68bcd135cfbbb9d020e10f58972b4f90ac98a3794f7791857139d45f417d127182bb26caca996a94c95008f2fc0ccc8a3c1b16dd07b531

    • SSDEEP

      3072:duhpDHOnUv1WfCBuL4IdkVDJNhA+GHRIBiSp5z5DT4zknffhd+OH:shpDH9vEfQQrdkB7Fi05ykn3v+y

    • 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)

    • 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 v6

Tasks