General

  • Target

    file

  • Size

    275KB

  • Sample

    231009-mhfhgscb6x

  • MD5

    51f78e75d410a09cb48d84209893135a

  • SHA1

    c25fba0d633bc073346bf733945b6d73053e63b0

  • SHA256

    6851e67bab60351b5fbfc00d8e4d5c454eb3a6bdd0cdf66cd324aa2828753c23

  • SHA512

    9b16e8a4df77b28374d60a16d3acb5a811248119901e04524e646d95fae12a853494d77915544bd49c09df22a5ec9713a5cc776c4982ed25bfeae3701e0e9da5

  • SSDEEP

    3072:CP1pDwPaFmYBQDzn2k+9a/WqnJGOg0Xhxz4l8QU:Q1qPnYBQPnv/WubFxK8Q

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      file

    • Size

      275KB

    • MD5

      51f78e75d410a09cb48d84209893135a

    • SHA1

      c25fba0d633bc073346bf733945b6d73053e63b0

    • SHA256

      6851e67bab60351b5fbfc00d8e4d5c454eb3a6bdd0cdf66cd324aa2828753c23

    • SHA512

      9b16e8a4df77b28374d60a16d3acb5a811248119901e04524e646d95fae12a853494d77915544bd49c09df22a5ec9713a5cc776c4982ed25bfeae3701e0e9da5

    • SSDEEP

      3072:CP1pDwPaFmYBQDzn2k+9a/WqnJGOg0Xhxz4l8QU:Q1qPnYBQPnv/WubFxK8Q

    • 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