General

  • Target

    file.exe

  • Size

    321KB

  • Sample

    230109-zm678abb61

  • MD5

    59698164011560e61011db2659fea20f

  • SHA1

    70cff9f8aa8561d0bc6b16b4462cf264f1cf6076

  • SHA256

    824d5828b99e7129efd43830a9c714293682cf9085393623fdd2b617d3f98c68

  • SHA512

    f10ac00cc7460a630bb5c59dbda948eae2e655078774df221baf51dacddd5b388b8c332f1cf4ec28449096fcd67fa7796b92b1a201240f9e55b0b1a840747c07

  • SSDEEP

    6144:L8wlmU3y6BnUbpx74EcyA4rwTH7TIkjxmf/y:LtUWBnUbpxcEczPTIbq

Malware Config

Extracted

Family

tofsee

C2

svartalfheim.top

jotunheim.name

Targets

    • Target

      file.exe

    • Size

      321KB

    • MD5

      59698164011560e61011db2659fea20f

    • SHA1

      70cff9f8aa8561d0bc6b16b4462cf264f1cf6076

    • SHA256

      824d5828b99e7129efd43830a9c714293682cf9085393623fdd2b617d3f98c68

    • SHA512

      f10ac00cc7460a630bb5c59dbda948eae2e655078774df221baf51dacddd5b388b8c332f1cf4ec28449096fcd67fa7796b92b1a201240f9e55b0b1a840747c07

    • SSDEEP

      6144:L8wlmU3y6BnUbpx74EcyA4rwTH7TIkjxmf/y:LtUWBnUbpxcEczPTIbq

    • 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)

    • 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.

    • Deletes itself

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v6

Tasks