General

  • Target

    file

  • Size

    253KB

  • Sample

    231023-tzkxvscb59

  • MD5

    127450d6d27fe7279152ee41f2000e84

  • SHA1

    364c48ec0e18867e64dd1b2e55c11f40952fe8fa

  • SHA256

    4086a65a6f05acad63c7c0bfe30805912a17e560ac8817af73717ef9fdc8ce71

  • SHA512

    49f3826a2fd3b040dccb0cae9ae9f962aa7b913a541b4239a1133acd803bff90ff680a3c8e9a486858314991c0b1b60338490e37cf4ad21978ebce73240611b9

  • SSDEEP

    3072:hwXAGaRVLR6OGOyfDYYX2oREGsmA0gi7R5d8p1GpufrAV:e1aRVL8bOCDYY+Gs7i961U

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      file

    • Size

      253KB

    • MD5

      127450d6d27fe7279152ee41f2000e84

    • SHA1

      364c48ec0e18867e64dd1b2e55c11f40952fe8fa

    • SHA256

      4086a65a6f05acad63c7c0bfe30805912a17e560ac8817af73717ef9fdc8ce71

    • SHA512

      49f3826a2fd3b040dccb0cae9ae9f962aa7b913a541b4239a1133acd803bff90ff680a3c8e9a486858314991c0b1b60338490e37cf4ad21978ebce73240611b9

    • SSDEEP

      3072:hwXAGaRVLR6OGOyfDYYX2oREGsmA0gi7R5d8p1GpufrAV:e1aRVL8bOCDYY+Gs7i961U

    • 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 v15

Tasks