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General

  • Target

    file

  • Size

    228KB

  • Sample

    230615-xn75ssah39

  • MD5

    701b5a67cb9fa8b38304719b3a6f256b

  • SHA1

    7a9ee197045de8b0efe76078e15ce58da0beb5be

  • SHA256

    002a4246be4001cc2fb7f2e68c52feac96653f27c128035c034ace04c65b7311

  • SHA512

    9608d7ec935a3d36ce549b66366a00ca83264a3ddf4d5613c005e1e0a6d903dd174f340178d9670f0c83148f5431b176a051994e8fadd2b1dcdec68806fa9285

  • SSDEEP

    3072:+3LpDXKlskzgJqi9EN3zCuChWFUqSS82Tor1yv9oHFh:ULpTKlsQlRz8MO2MGoH

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      file

    • Size

      228KB

    • MD5

      701b5a67cb9fa8b38304719b3a6f256b

    • SHA1

      7a9ee197045de8b0efe76078e15ce58da0beb5be

    • SHA256

      002a4246be4001cc2fb7f2e68c52feac96653f27c128035c034ace04c65b7311

    • SHA512

      9608d7ec935a3d36ce549b66366a00ca83264a3ddf4d5613c005e1e0a6d903dd174f340178d9670f0c83148f5431b176a051994e8fadd2b1dcdec68806fa9285

    • SSDEEP

      3072:+3LpDXKlskzgJqi9EN3zCuChWFUqSS82Tor1yv9oHFh:ULpTKlsQlRz8MO2MGoH

    • 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