General

  • Target

    96bd18939e58d0ab76857eddbfcb8f632f58ddbe73d7f5e48165b0e1620022c8

  • Size

    229KB

  • Sample

    221226-vsf6rsdc27

  • MD5

    2501758d5a4417bb3f1a8d33c4ab2caf

  • SHA1

    46d6cfe5dbb90da60639e4f47b0c29fb26465941

  • SHA256

    96bd18939e58d0ab76857eddbfcb8f632f58ddbe73d7f5e48165b0e1620022c8

  • SHA512

    93533d3214b79c7fb73f469745e681871ae0257b1e883001965d33af2e3a734ec3d13ffa7920a779de964b5fb6ed402da9aedebff470f782a40144dbe2848b7e

  • SSDEEP

    3072:C+0AFLLMAixtj5FsJTkQw11EAVE9Dpdjs0C7jLpt2L+V+Y700:20LLMAZJ81slXGHU+Vl7l

Malware Config

Extracted

Family

tofsee

C2

svartalfheim.top

jotunheim.name

Targets

    • Target

      96bd18939e58d0ab76857eddbfcb8f632f58ddbe73d7f5e48165b0e1620022c8

    • Size

      229KB

    • MD5

      2501758d5a4417bb3f1a8d33c4ab2caf

    • SHA1

      46d6cfe5dbb90da60639e4f47b0c29fb26465941

    • SHA256

      96bd18939e58d0ab76857eddbfcb8f632f58ddbe73d7f5e48165b0e1620022c8

    • SHA512

      93533d3214b79c7fb73f469745e681871ae0257b1e883001965d33af2e3a734ec3d13ffa7920a779de964b5fb6ed402da9aedebff470f782a40144dbe2848b7e

    • SSDEEP

      3072:C+0AFLLMAixtj5FsJTkQw11EAVE9Dpdjs0C7jLpt2L+V+Y700:20LLMAZJ81slXGHU+Vl7l

    • Tofsee

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

    • xmrig

      XMRig is a high performance, open source, cross platform CPU/GPU miner.

    • XMRig Miner payload

    • Creates new service(s)

    • Executes dropped EXE

    • Modifies Windows Firewall

    • Sets service image path in registry

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v6

Tasks