General

  • Target

    713b4d8c98b8d3ccd32c4b0af33e508c73e1c226be9b3bb4a16bc90608ec4bc8

  • Size

    297KB

  • Sample

    221227-gg3zhaec82

  • MD5

    6ba4ea9014803d0b78700bf6145c64a9

  • SHA1

    b4bf4fdf2843272ab154de1a67ca766773cef11b

  • SHA256

    713b4d8c98b8d3ccd32c4b0af33e508c73e1c226be9b3bb4a16bc90608ec4bc8

  • SHA512

    124af5227cced79e182e4de45f0aae279009bf13e79882eb9e5e106491379fdef86ebeaed27a6b51d8ccbe83bd2b37ecca8f4814bfe95347e68639511189abfd

  • SSDEEP

    6144:OLjdk4bHO8/v3CXOO7f9gxzGi58xQ3xDPkMo5zXbAc:OvdPZHyXOOq1Gi58xaxDPyrbA

Malware Config

Extracted

Family

tofsee

C2

svartalfheim.top

jotunheim.name

Targets

    • Target

      713b4d8c98b8d3ccd32c4b0af33e508c73e1c226be9b3bb4a16bc90608ec4bc8

    • Size

      297KB

    • MD5

      6ba4ea9014803d0b78700bf6145c64a9

    • SHA1

      b4bf4fdf2843272ab154de1a67ca766773cef11b

    • SHA256

      713b4d8c98b8d3ccd32c4b0af33e508c73e1c226be9b3bb4a16bc90608ec4bc8

    • SHA512

      124af5227cced79e182e4de45f0aae279009bf13e79882eb9e5e106491379fdef86ebeaed27a6b51d8ccbe83bd2b37ecca8f4814bfe95347e68639511189abfd

    • SSDEEP

      6144:OLjdk4bHO8/v3CXOO7f9gxzGi58xQ3xDPkMo5zXbAc:OvdPZHyXOOq1Gi58xaxDPyrbA

    • 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